2015 Microchip Technology Inc. DS20005119G-page 1
Features
• Single Voltage Read and Write Operations
- 2.7-3.6V or 2.3-3.6V
• Serial Interface Architecture
- Nibble-wide multiplexed I/O’s with SPI-like serial
command structure
- Mode 0 and Mode 3
- x1/x2/x4 Serial Peripheral Interface (SPI) Protocol
• High Speed Clock Freque ncy
- 2.7-3.6V : 104 MHz max
- 2.3-3.6V : 80 MHz max
• Burst Modes
- Continuous linear burst
- 8/16/32/64 Byte linear burst with wrap-around
• Superior Reliability
- Endurance: 100,000 Cycles (min)
- Greater than 100 years Data R etention
• Low Power Consumption:
- Active Read current: 15 mA (typical @ 104 MHz)
- S t andby Current: 15 µA (typical)
• Fast Erase Time
- Sector/Block Erase: 18 ms (typ), 25ms (m ax)
- Chip Erase: 35 ms (typ), 50 ms (max)
• Page-Program
- 256 Bytes per p age in x1 or x4 mode
• End-of-Write Detection
- Software polling the BUSY bit in status register
• Flexible Erase Capability
- Uniform 4 KByte sectors
- Four 8 KByte top and bottom parameter
overlay blocks
- One 32 KByte top and bottom overlay block
- Uniform 64 KByte overlay blocks
• Write-Suspend
- Suspend Program or Erase opera tion to access
another block/sector
• Software Reset (RST) mode
• Software Protection
- Individual-Block Write Protection with permanent
lock-down cap ability
- 64 KByte blocks, two 32 KByte blocks, and
eight 8 KByte parameter blocks
- Read Protection on top and bottom 8 KByte
para meter blocks
• Security ID
- One-T ime Programmable (OTP) 2 K Byte, Secure ID
- 64 bit unique, factory pre-programmed identifier
- User-programmable area
• Temperature Range
- Industrial: -40°C to +85°C
- Extended: -40°C to +105°C
• Packages Available
- 8-contact WDFN (6mm x 5mm)
- 8-contact WDFN (6mm x 8 mm)
- 8-lead SOIJ (5.28 mm)
- 16-lead SOIC (7.50 mm)
- 24-ball TBGA (6mm x 8mm)
• All devices are RoHS compliant
Product Description
The Serial Quad I/O™ (SQI™) family o f flash-memory
devices features a six-wire, 4-bit I/O interface that
allows for low-power, high -performance operation in a
low pin-count package. SST26VF064B/064BA also
support full command-set compatibility to traditional
Serial Peripheral Interface (SPI) protocol. System
designs using SQI flash devices occupy less board
space and ultimately lower system costs.
All members of the 26 Series, SQI family are manufac-
tured with proprietary , high-performance CMOS Super-
Flash® technology . The split-gate cell design and thick-
oxide tunneling injector attain better reliability and man-
ufacturability compared with alternate approa ches.
SST26VF064B/064BA significantly improve perfor-
mance and reliability, while lowering power consump-
tion. These devices write (Program or Erase) with a
single power supply of 2.3-3.6V. The total energy con-
sumed is a function of the applied voltage, current, and
time of application. Since for any given voltage range,
the SuperFlash technology uses less current to pro-
gram and has a shorter erase time, the total energy
consumed during any Erase or Program operation is
less than alternative fl ash memory technologies.
SST26VF064B/064BA are offered in 8-contact WDFN
(6 mm x 5 mm or 6mm x 8mm), 8-lead SOIJ (5.28 mm),
16-lead SOIC (7.50 mm), and 24-ball TBGA. See Fig-
ure 2-2 for pin assignments.
Two configurations are available upon order.
SST26VF064B default at power-up has the WP# and
HOLD# pins enabled, and the SIO2 and SIO3 pins dis-
abled, to initiate SPI-protocol operations.
SST26VF064B / SST26VF064BA
2.5V/3.0V 64 Mbit Serial Quad I/O (SQI) Flash Memory
SST26VF064B / SST26VF064BA
DS20005119G-page 2 2015 Microchip Technology Inc.
SST26VF064BA default at power-up has the WP# and
HOLD# pins disabled, and the SIO2 and SIO3 pins
enabled, to initiate Quad I/O operations. See “I/O Con-
figuration (IOC)” on page 12 for more information about
configuring WP#/HOLD# and SIO3/SIO4 pins
.
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2015 Microchip Technology Inc. DS20005119G-page 3
SST26VF064B / SST26VF064BA
1.0 BLOCK DIAGRAM
FIGURE 1-1: FUNCTIONAL BLOCK DIAGRAM
25119 B1.0
Page Buffer,
I/O Buffers
and
Data Latches
SuperFlash
Memory
X - Decoder
Control Logic
Address
Buffers
and
Latches
HOLD#
Y - Decoder
CE# SIO [3:0]
Serial Interface
OTP
WP# SCK
SST26VF064B / SST26VF064BA
DS20005119G-page 4 2015 Microchip Technology Inc.
2.0 PIN DESCRIPTION
FIGURE 2-1: PIN DESCRIPTION FOR 8-LEAD SOIJ
FIGURE 2-2: PIN DESCRIPTION FOR 8-CONTACT WDFN
FIGURE 2-3: PIN DESCRIPTION FOR 16-LEAD SOIC
1
2
3
4
8
7
6
5
CE#
SO/SIO1
WP#/SIO2
VSS
VDD
HOLD/SIO3
SCK
SI/SIO0
Top View
25119 08-soic S2A P1.0
1
2
3
4
8
7
6
5
CE#
SO/SIO1
WP#/SIO2
VSS
Top View
VDD
HOLD/SIO3
SCK
SI/SIO0
25119 08-wson QA P1.0
SCK
SI/SIO0
NC
NC
NC
NC
VSS
WP#/SIO2
HOLD#/SIO3
VDD
NC
NC
NC
NC
CE#
SO/SIO1
16-SOIC P1.0
Top View
2015 Microchip Technology Inc. DS20005119G-page 5
SST26VF064B / SST26VF064BA
FIGURE 2-4: PIN DESCRIPTION FOR 24-BALL TBGA
TABLE 2-1: PIN DESCRIPTION
Symbol Pin Name Functions
SCK Serial Clock To provide the timing of the serial interface.
Commands, addresses, or input data are latched on the rising edge of the clock
input, while output data is shifted out on the falling edge of the clock input.
SIO[3:0] Serial Data
Input/Output To transfer commands, addresses, or data serially into the device or data out of
the device. Inputs are latched on the rising edge of the serial clock. Data is
shifte d ou t on the falling edge of the serial clock. The Enable Quad I/O (EQIO)
command instruction configures these pins for Qua d I/O mode.
SI Serial Data Input
for SPI mode To transfer commands, addresses or data serially into the device. Inputs are
latched on the rising edge of the serial clock. SI is the default state after a power
on reset.
SO Serial Data Output
for SPI mode To transfer data serially out of the device. Data is shifted out on the falling edge
of the serial clock. SO is the default state after a power on reset.
CE# Chip Enable The device is enabled by a high to low transition on CE#. CE# must remain low
for the duration of any command sequence; or in the case of Write operations,
for the command/data input sequence.
WP# Write Protect The WP# is used in conjunction with the WPEN and IOC bits in the Configura-
tion register to prohibit write operations to the Block-Protection register . This pin
only works in SPI, single-bit and dual-bi t Rea d mode.
HOLD# Hold Temporarily stops serial communication with the SPI Flash memory while the
device is selected. This pin only works in SPI, single-bit and dual-bit Read mode
and must be tied high when not in use.
VDD Power Supply To provide power supply voltage.
VSS Ground
NC
NC
NC
NC
NC
SCK
VSS
VDD
NC
CE#
NC
WP#/
SIO2
NC
S0/
SIO1
SI/
SIO0
HOLD#/
SIO3
NC
NC
NC
NC
NC
NC
NC
NC
ABCDEF
1
2
3
4
T4D-P1.0
Top View
SST26VF064B / SST26VF064BA
DS20005119G-page 6 2015 Microchip Technology Inc.
3.0 MEMORY ORGANIZATION
Th e SST26VF064B/064BA SQI memor y ar ray is org a-
nized in uniform, 4 KByte erasable sectors with the fol-
lowing erasable blocks: eight 8 KByte parameter, two
32 KByte overlay, and one-hundred twenty-six
64 KByte overlay blocks. See Figure 3-1.
FIGURE 3-1: MEMORY MAP
25119 F41.0
Top of Memory Block
8 KByte
8 KByte
8 KByte
8 KByte
32 KByte
64 KByte
64 KByte
64 KByte
32 KByte
8 KByte
8 KByte
8 KByte
8 KByte
Bottom of Memory Block
4 KByte
4 KByte
4 KByte
4 KByte
. . .
2 Sectors for 8 KByte blocks
8 Sectors for 32 KByte blocks
16 Sectors for 64 KByte blocks
. . .
2015 Microchip Technology Inc. DS20005119G-page 7
SST26VF064B / SST26VF064BA
4.0 DEVICE OPERATION
SST26VF064B/064BA support both Serial Peripheral
Interface (SPI) bus protocol and a 4-bit multiplexed SQI
bus protocol. To provide backward compatibility to tra-
ditional SPI Serial Flash devices, the device’s initial
state after a power-on reset is SPI mode which sup-
ports multi-I/O (x1/x2/x4) Read/Write commands. A
command instruction configures the device to SQI
mode. The dataflow in the SQI mode is similar to the
SPI mode, except it uses four multiplexed I/O signals
for command, address, and data sequence.
SQI Flash Memory supports both Mode 0 (0,0) and
Mode 3 (1,1) bus operations. The difference between
the two modes is the state of the SCK signal when th e
bus master is in stand-by mode and no data is being
transferred. The SCK signal is low for Mode 0 and SCK
signal is high for Mode 3. For both modes, the Serial
Data I/O (SIO [3:0]) is sampled at the rising edge of the
SCK clock signal for input, and driven after the falling
edge of the SCK clock signal for output. The traditional
SPI protocol uses separate input (SI) and output (SO)
data signals as shown in Figure 4-1. The SQI proto col
uses four multiplexed signals, SIO[3:0], for both data in
and data out, as shown in Figure 4 -2. This means the
SQI protocol quadruples the traditional bus transfer
speed at the same clock frequency, without the need
for more pins on the package.
FIGURE 4-1: SPI PROTOCOL (TRADITIONAL 25 SERIES SPI DEVICE)
FIGURE 4-2: SQI SERIAL QUAD I/O PROTOCOL
4.1 Device Protection
SST26VF064B/064BA offer a flexible memory protec-
tion scheme that allows the protection state of each
individual block to be controlled separately. In addition,
the Write-Protection Lock-Down register prevents any
change of the lock status during device operation. To
avoid inadvertent writes during power-up, the device is
write-protected by default after a power-on reset cycle.
A Global Block-Protection Unlock command offers a
single command cycle that unlo cks the entire memory
array for faster manufacturing throughput.
For extra protection, there is an additional non-volatile
register that can permanently write-protect the Block-
Protection register bits for ea ch individual block. Each
of the corresponding lock-down bits are one time pro-
grammable (OTP)—once written, they cannot be
erased. Data that had been previously programmed
into these blocks cannot be altered by programming or
erase and is not reversible
4.1.1 INDIVIDUAL BLOCK PROTECTION
SST26VF064B/064BA have a Block-Protection regis-
ter which provides a software mechanism to write-lock
the individual memory blocks and write-lock, and/or
read-lock, the individual parameter blocks. The Block-
Protection register is 144 bits wide: two bits each for the
eight 8 KByte parameter blocks (write-lock and read-
lock), and one bit each for the remaining 32 KByte and
64 KByte overlay blocks (write-lock). See Table 5-6 for
address range protected per register bit.
Each bit in the Block-Protection reg ister (BPR) can be
written to a ‘1’ (protected) or ‘0’ (unprotected). For the
parameter blocks, the most significant bit is for read-
lock, and the least significant bit is for write-lock. Read-
locking the parameter blocks provides additional secu-
rity for sensitive data after retrieval (e.g., after initial
boot). If a block is read-locked all reads to the block
return data 00H.
25119 F03.0
MODE 3
SCK
SI
SO
CE#
MODE 3
DON'T CARE
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
MODE 0MODE 0
HIGH IMPEDANCE
MSB
MSB
25119 F04.0
MODE 3
CLK
SIO(3:0)
CE#
MODE 3
C1 C0 A5 A4 A3 A2 A1 A0 H0 L0 H1 L1 H2 L2 H3 L3
MODE 0MODE 0
MSB
SST26VF064B / SST26VF064BA
DS20005119G-page 8 2015 Microchip Technology Inc.
The Write Block-Protection Register command is a
two-cycle command which requires that Write-Enable
(WREN) is executed prior to the Write Block-Protection
Register command. The Global Block-Protection
Unlock command clears all write protection bits in the
Block-Protection register.
4.1.2 WRITE-PROTECTION LOCK-DOWN
(VOLATILE)
To prevent changes to the Block-Protection register,
use the Lock-Down Block-Protection Register (LBPR)
command to enable Write-Protection Lock-Down.
Once Write-Protection Lock-Down is enabled, the
Block-Protection register can not be changed. To avoid
inadvertent lock down, the WREN command must be
executed prior to the LBPR command.
To reset Write-Protection Lock-Down, performing a power
cycle on the device is required. The Write-Protection
Lock-Down status may be read from the Status register.
4.1.3 WRITE-LOCK LOCK-DOWN (NON-
VOLATILE)
The non-Volatile Write-Lock Lock-Down register is an
alternate register that permanently prevents changes
to the block-protect bits. The non-Volatile Write-Lock
Lock-Down register (nVWLDR) is 136 bits wide per
device: one bit each for the eight 8-KByte parameter
blocks, and one bit each for the remaining 32 KByte
and 64 KByte overlay blocks. See Table 5-6 for address
range protected per register bit.
Writing ‘1’ to any or all of the nVWLDR bits disables the
change mechanism for the corresponding Write-Lock
bit in the BPR, and permanently sets this bit to a ‘1’
(protected) state. After this change, both bits will be set
to ‘1’, regardless of the data entered in subsequent
writes to either the nVWLDR or the BPR. Subsequent
writes to the nVWLDR can only alter available locations
that have not been previously written to a ‘1’. This
method provides write-protection for the corresponding
memory-array block by protecting it from future pro-
gram or erase operations.
Writing a ‘0’ in any location in the nVWLDR has no
effect on either the nVWLDR or the corresponding
Write-Lock bit in the BPR.
Note that if the Block-Protection register had been pre-
viously locked down, see “Write-Protection Lock-Down
(Volatile)”, the device must be power cycled before
using the nVWLDR. If the Block-Protection register is
locked down and the Write nVWLDR command is
accessed, the command will be ignored.
4.2 Hardware Write Protection
The hardware Write Protection pin (WP#) is used in
conjunction with the WPEN an d IOC bits in the co nfig-
uration register to prohibit write operations to the Block-
Protection and Configuration registers. The WP# pin
function only works in SPI single-bit and dual-bit read
mode when the IOC bit in the configuration register is
set to ‘0’.
The WP# pin function is disabled when the WPEN bit
in the configuration re gister is ‘0’. This allows installa-
tion of the SST26VF064B/064BA in a system with a
grounded WP# pin while still enabling Write to the
Block-Protection register. The Lock-Down function of
the Block-Protection Register supersedes the WP# pin,
see Table 4-1 for Write Protection Lock-Down states.
The factory default setting at power-up of the WPEN bit
is ‘0’, disabling the Write Protect function of the WP#
after power-up. WPEN is a non-volatile bit; once the bit
is set to ‘1’, the Write Protect function of the WP# pin
continues to be e nabled after power-up. The W P# pin
only protects the Block-Protection Register and Config-
uration Register from changes. Therefore, if the WP#
pin is set to low before or after a Program or Erase
command, or while an internal Write is in progress, it
will have no effect on the Write command.
The IOC bit takes priority over the WPEN bit in the con-
figuration register. When the IOC bi t is ‘1’, the fun ction
of the WP# pin is disabled and the WPEN bit serves no
function. When the IOC bit is ‘0’ and W PEN is ‘1’, set-
ting the WP# pin active low prohibi ts Write operations
to the Block Protection Register.
2015 Microchip Technology Inc. DS20005119G-page 9
SST26VF064B / SST26VF064BA
4.3 Security ID
SST26VF064B/064BA offer a 2 KByte Security ID (Sec
ID) feature. The Security ID space is divided into two
parts – one factory-programmed, 64-bit segment and
one user-programmable segment. The factory-pro-
grammed segment is programmed during manufactur-
ing with a unique number and cannot be changed. The
user-programmable segment is left unprogrammed for
the customer to program as desi red.
Use the Program Security ID (PSID) co mmand to pro-
gram the Security ID using the address shown in Table
5-5. The Security ID can be locked using the Lockout
Security ID (LSID) command. This prevents any future
write operations to the Security ID .
The factory-programmed portion of the Security ID
can’t be programmed by the user; neither the factory-
programmed nor user-programmable areas can be
erased.
4.4 Hold Operation
The HOLD# pin pauses active serial sequences with-
out resetting the clocking sequence. This pin is active
after every power up and only operates during SPI
single-bit and dual-bit modes. T wo factory configura-
tions are available: SST26VF0 64B ships with the IOC
bit set to ‘0’ and the HOLD# pin function enabled;
SST26VF064BA ships with the IOC bit set to ‘1’ and the
HOLD# pin function disabled. The HOLD# pin is always
disabled in SQI mode and only works in SPI single-bit
and dual-bit read mode.
To activate the Hold mode, CE# must be in active low
state. The Hold mode begins when the SCK active low
state coincides with the falling ed ge of the HOLD# sig-
nal. The Hold mode ends when the HOLD# signal’s ris-
ing edge coincides with the SCK active low state.
If the falling edge of the HOLD# signal does not co in-
cide with the SCK active low state, then the device
enters Hold mode when the SCK next reaches the
active low state. Similarly, if the rising edge of the
HOLD# signal does not coincide with the SCK active
low state, then the device exits Hold mode when the
SCK next reaches the active low state. See Figure 4-3.
Once the device enters Hold mod e, SO will be in high
impedance state while SI and SCK can be VIL or VIH.
If CE# is driven active high during a Hold condition, it
resets the internal logic of the device. As long as
HOLD# signal is low, the memory remains in the Hold
condition. To resume communication with the device,
HOLD# must be driven active high, and CE# must be
driven active low.
FIGURE 4-3: HOLD CONDITION WAVEFORM.
TABLE 4-1: WRITE PROTECTION LOCK-DOWN STATES
WP# IOC WPEN WPLD Execute WBPR Instruction Configuration Register
L0 1 1Not Allowed Protected
L0 0 1Not Allowed Writable
L0 1 0Not Allowed Protected
L0
1020Allowed Writable
H0 X 1Not Allowed Writable
H0 X 0Allowed Writable
X1 X 1Not Allowed Writable
X1
3020Allowed Writable
1. Default at power-up Register settings for SST26VF064B
2. Factory default setting is ‘0’. This is a non-volatile bit; default at power-up is the value set prior to power-down.
3. Default at power-up Register settings for SST26VF064BA
ActiveHold Active Hold Active
25119 F46.0
SCK
HOLD#
SST26VF064B / SST26VF064BA
DS20005119G-page 10 2015 Microchip Technology Inc.
4.5 Status Register
The S tatus register is a read-only register that provides
the following status information: whether the flash
memory array is available for a ny Read or Write oper-
ation, if the device is write-enabled, whether a n erase
or program operation is suspended, and if the Block-
Protection register and/or Security ID are locked down.
During an internal Erase or Program operation, the Sta-
tus register may be read to determine the completion of
an operation in progress. Table 4-2 describes the func-
tion of each bit in the Status register.
TABLE 4-2: STATUS REGISTER
Bit Name Function
Default at
Power-up
Read/Write (R/
W)
0BUSY Write ope ration status
1 = Internal Write operation is in progress
0 = No internal Write operation is in progress
0R
1WEL Write-Enable Latch status
1 = Device is write-enabled
0 = Device is not write-enabled
0R
2WSE Write Suspend-Erase status
1 = Erase suspen de d
0 = Erase is not suspen d ed
0R
3WSP Write Suspend-Program status
1 = Program suspended
0 = Program is not suspend ed
0R
4WPLD Write Protection Lock-Down status
1 = Write Protection Lock-Down enabled
0 = Write Protection Lock-Down disabled
0R
5SEC1
1. The Security ID status will always be ‘1’ at power-up after a successful execution of the Lockout Security ID instruction, oth-
erwise default at power-up is ‘0’.
Security ID status
1 = Security ID space locked
0 = Security ID space not locked
01R
6RES Reserved for future use 0R
7BUSY Write ope ration status
1 = Internal Write operation is in progress
0 = No internal Write operation is in progress
0R
2015 Microchip Technology Inc. DS20005119G-page 11
SST26VF064B / SST26VF064BA
4.5.1 WRITE-ENABLE LATCH (WEL)
The Write-Enable Latch (WEL) bit indicates the status
of the internal memory’s Write-Enable Latch. If the
WEL bit is set to ‘1’, the device is write enabled. If the
bit is set to ‘0’ (reset), the device is not write enabled
and does not accept any memory Program or Erase,
Protection Register Write, or Lock-Down commands.
The Write-Enable Latch bit is automatically reset under
the following conditions:
• Power-up
• Reset
• Write-Disable (WRDI) instruction
• Page-Program instruction completion
• Sector-Erase instruction completion
• Block-Erase instruction completion
• Chip-Erase instruction completion
• Write-Block-Protection register instruction
• Lock-Down Block-Protection register instruction
• Program Security ID instruction completion
• Lockout Security ID instruction completion
• Write-Suspend instruction
• SPI Quad Page program instruction completion
• Write Status Register
4.5.2 WRITE SUSPEND ERASE STATUS
(WSE)
The Write Suspend-Erase status (WSE) indicates
when an Erase operation has been suspended. The
WSE bit is ‘1’ after the host issues a suspend command
during an Erase operation. Once the suspended Erase
resumes, the WSE bit is reset to ‘0’.
4.5.3 WRITE SUSPEND PROGRAM
STATUS (WSP)
The Write Suspend-Program status (WSP) bit indicates
when a Program operati on has been suspended. The
WSP is ‘1’ after the host issues a suspend command
during the Program operation. Once the suspended
Program resumes, the WSP bit is reset to ‘0’.
4.5.4 WRITE PROTECTION LOCK-DOWN
STATUS (WPLD)
The Write Protection Lock-Down status (WPLD) bit
indicates when the Block-Protection re gister is l ocked-
down to prevent changes to the protection settings.
The WPLD is ‘1’ after the host issues a Lock-Down
Block-Protection command. After a power cycle, the
WPLD bit is reset to ‘0’.
4.5.5 SECURITY ID STATUS (SEC)
The Security ID Status (SEC) bit indicates when the
Security ID space is locked to prevent a Write com-
mand. The SEC is ‘1’ after the host issues a Lockout
SID command. Once the host issues a Lockout SID
command, the SEC bit can never be reset to ‘0.’
4.5.6 BUSY
The Busy bit determines whether there is an internal
Erase or Program operation in progress. If the BUSY
bit is ‘1’, the device is busy with an internal Erase or
Program operation. If the bit is ‘0’, no Erase or Program
operation is in progress.
4.5.7 CONFIGURATION REGISTER
The Configuration register is a Read/Write register that
stores a variety of configuration information. See Table
4-3 for the function of each bit in the register.
TABLE 4-3: CONFIGURATION REGISTER
Bit Name Function Default at Power-up Read/Write (R/W)
0RES Reserved 0R
1
IOC I/O Configuration for SPI Mode
1 = WP# and HOLD# pins disabled
0 = WP# and HOLD# pins enabled
01
1. SST26VF064B default at Power-up is ‘0’
SST26VF064BA default at Power-up is ‘1’
R/W
2RES Reserved 0R
3
BPNV Block-Protection Volatility State
1 = No memory block has been permanently locked
0 = Any block has been permanently locked
1R
4RES Reserved 0R
5RES Reserved 0R
6RES Reserved 0R
7
WPEN Write-Protection Pin (WP#) Enable
1 = WP# enabled
0 = WP# disabled
02
2. Factory default setting. This is a non-volatile bit; default at power-up will be the setting prior to power-down.
R/W
SST26VF064B / SST26VF064BA
DS20005119G-page 12 2015 Microchip Technology Inc.
4.5.8 I/O CONFIGURATION (IOC)
The I/O Configuration (IOC) bit re-configures the I/O
pins. The IOC bit is set by writing a ‘1’ to Bit 1 of the
Configuration register. When IOC bit is ‘0’ the WP# pin
and HOLD# pin are enabled (SPI or Dual Configuration
setup). When IOC bit is set to ‘1’ the SIO2 pin and SIO3
pin are enabled (SPI Quad I/O Configuration setup).
The IOC bit must be set to ‘1’ before issuing the follow-
ing SPI commands: SQOR (6BH), SQIOR (EBH),
RBSPI (ECH), and SPI Quad page program (32H).
Without setting the IOC bit to ‘1’, those SPI commands
are not valid. The I/O configuration bit does not apply
when in SQI mode. The default at power-up for
SST26VF064B is ‘0’ and for SST26VF064BA is ‘1’.
4.5.9 BLOCK-PROTECTION VOLATILITY
STATE (BPNV)
The Block-Protection Volatility State bit indicates
whether any block has been permanently locked with
the nVWLDR. When no bits in the nVWLDR have been
set, the BPNV is ‘1’; this is the default state from the
factory. When one or more bits in the nVWLDR are set
to ‘1’, the BPNV bit will also be ‘0’ from that point for-
ward, even after power-up.
4.5.10 WRITE-PROTECT ENABLE (WPEN)
The Write-Protect Enable (WPEN) bit is a non-volatil e
bit that enables the WP# pin.
The Write-Protect (WP#) pin and the Write-Protect
Enable (WPEN) bit control the programmable hard-
ware write-protect feature. Setting the WP# pin to low,
and the WPEN bit to ‘1’, enables Hardware write-pro-
tection. To disable Hardware write protection, set either
the WP# pin to high or the WPEN bit to ‘0’. There is
latency associated with writing to the WPEN bit. Poll
the BUSY bit in the Status register, or wait TWPEN, for
the completion of the internal, self-timed Write opera-
tion. When the chip is hardware write protected, only
Write operations to Block-Protection and Configuration
registers are disabled. See “Hardware Write Protec-
tion” on page 8 and Table 4-1 on page 9 for more infor-
mation about the functionality of the WPEN bit.
2015 Microchip Technology Inc. DS20005119G-page 13
SST26VF064B / SST26VF064BA
5.0 INSTRUCTIONS
Instructions are used to read, write (erase and pro-
gram), and configure the SST26VF064B/064BA. The
complete list of the instructions is provided in Table 5-1.
TABLE 5-1: DEVICE OPERATION INSTRUCTIONS FOR SST26VF064B/064BA
Instruction
Description
Command
Cycle1
Mode Address
Cycle(s)2, 3
Dummy
Cycle(s)3
Data
Cycle(s)3
Max
Freq4
SPI SQI
Configuration
NOP No Operation 00H X X 0 0 0
104 MHz/
80 MHz
RSTEN Reset Enable 66H X X 0 0 0
RST5Reset Memory 99H X X 0 0 0
EQIO Enable Quad I/O 38HX 0 0 0
RSTQIO6Reset Quad I/O FFH X X 0 0 0
RDSR Read Status Register 05H X 0 0 1 to
X0 11 to
WRSR Write Status Register 01H X X 0 0 2
RDCR Read Configuration
Register 35H X 0 0 1 to
X0 11 to
Read
Read Read Memory 03H X 3 0 1 to 40 MHz
High-
Speed
Read
Read Memory at Higher
Speed 0BH X 3 3 1 to
104 MHz/
80 MHz
X311 to
SQOR7SPI Quad Output Read 6BH X 3 1 1 to
SQIOR8SPI Quad I/O Read EBH X 3 3 1 to
SDOR9SPI Dual Outpu t Read 3BH X 3 1 1 to
SDIOR10 SPI Dual I/O Read BBH X 3 1 1 to
SB Set Burst Length C0H X X 0 0 1
RBSQI SQI Read Burst with Wrap 0CH X 3 3 n to
RBSPI8SPI Read Burst with Wrap ECH X 3 3 n to
Identification
JEDEC-ID JEDEC-ID Read 9FH X 0 0 3 to
104 MHz/
80 MHz
Quad J-ID Quad I/O J-ID Read AFH X 0 1 3 to
SFDP Serial Flash Discoverable
Parameters 5AH X 3 1 1 to
Write
WREN Write Enable 06H X X 0 0 0
104 MHz/
80 MHz
WRDI W r i te Disable 04H X X 0 0 0
SE11 Erase 4 KBytes of Memory
Array 20H X X 3 0 0
BE12 Erase 64, 32 or 8 KBytes of
Memory Array D8HXX 3 0 0
CE Erase Full Array C7H X X 0 0 0
PP Page Program 02H X X 3 0 1 to 256
SPI Quad
PP7SQI Quad Page
Program 32H X 3 0 1 to 256
SST26VF064B / SST26VF064BA
DS20005119G-page 14 2015 Microchip Technology Inc.
WRSU Suspends Program/Erase B0H X X 0 0 0 104 MHz/
80 MHz
WRRE Resumes Program/Erase 30H X X 0 0 0
Protection
RBPR Read Block-Protection
Register 72H X 0 0 1 to18
104 MHz/
80 MHz
X0 11 to18
WBPR Write Block-Protection
Register 42H X X 0 0 1 to 18
LBPR Lock Down
Block-Protection
Register
8DH X X 0 0 0
nVWLDR non-Volatile Write Lock-
Down Register E8H X X 0 0 1 to 18
ULBPR Global Block Protection
Unlock 98HXX 0 0 0
RSID Read Security ID 88H X 2 1 1 to 2048
X 2 3 1 to 2048
PSID Program User
Security ID area A5H X X 2 0 1 to 256
LSID Lockout Security ID Pro-
gramming 85H X X 0 0 0
1. Command cycle is two clock periods in SQI mode and eight clock periods in SPI mode.
2. Address bits above the most significant bit of each density can be VIL or VIH.
3. Address, Dummy/Mode bits, and Data cycles are two clock periods in SQI and eight clock periods in SPI mode.
4. The max frequency for all instructions is up to 104 MHz from 2.7-3.6V and up to 80 MHz from 2.3-3.6V unless otherwise noted.
5. RST command only executed if RSTEN command is executed first. Any intervening command will disable Reset.
6. Device accepts eight-clock command in SPI mode, or two-clock command in SQI mode.
7. Data cycles are two clock periods. IOC bit must be set to ‘1’ before issuing the command.
8.Address, Dummy/Mode bits, and data cycles are two clock periods. IOC bit must be set to ‘1’ before issuing the command.
9. Data cycles are four clock periods.
10. Address, Dummy/Mode bits, and Data cycles are four clock periods.
11. Sector Addresses: Use AMS - A12, remaining address are don’t care, but must be set to VIL or VIH.
12. Blocks are 64 KByte, 32 KByte, or 8KByte, depending on location. Block Erase Address: AMS - A16 for 64 KByte; AMS - A15
for 32 KByte; AMS - A13 for 8 KByte. Remaining addresses are don’t care, but must be set to VIL or VIH.
TABLE 5-1: DEVICE OPERATION INSTRUCTIONS FOR SST26VF064B/064BA
Instruction
Description
Command
Cycle1
Mode Address
Cycle(s)2, 3
Dummy
Cycle(s)3
Data
Cycle(s)3
Max
Freq4
SPI SQI
2015 Microchip Technology Inc. DS20005119G-page 15
SST26VF064B / SST26VF064BA
5.1 No Operation (NOP)
The No Operation command only cancels a Reset
Enable command. NOP has no impact on any other
command.
5.2 Reset-Enable (RSTEN) and Reset
(RST)
The Reset operation is used as a system (software)
reset that puts the device in normal operating Ready
mode. This operation consists of two commands:
Reset-Enable (RSTEN) followed by Reset (RST).
To reset the SST26VF064B/064BA, the host drives
CE# low, sends the Reset-Enable command (66H),
and drives CE# high. Next, the host drives CE# low
again, sends the Reset command (99H), and drives
CE# high, see Figure 5-1.
The Reset operation requires the Reset-Enable com-
mand followed by the Reset co mmand. Any co mmand
other than the Re set command after the Reset-Enable
command will disable the Reset-Enable.
Once the Reset-Enable and Reset commands are suc-
cessfully executed, the device returns to normal opera-
tion Read mode and then does the following: resets the
protocol to SPI mode, resets the burst length to 8
Bytes, clears all the bits, except for bit 4 (WPLD) and
bit 5 (SEC), in the St atus register to their default states,
and clears bit 1 (IOC) in the configuration register to its
default state. A device reset during an active Program
or Erase operation aborts the operation, which can
cause the data of the t argeted address range to be cor-
rupted or lost. Depending on the prior operation, the
reset timing may vary . Recovery from a Write operation
requires more latency time than recovery from other
operations. See Table 8-2 on page 49 for Rest timing
parameters.
FIGURE 5-1: RESET SEQUENCE
5.3 Read (40 MHz)
The Read instruction, 03H, is supported in SPI bus pro-
tocol only with clock frequencies up to 40 MHz. This
command is not supported in SQI bus protocol. The
device outputs the data starting from the specified
address location, then continuously streams the data
output through all addresses until terminated by a low-
to-high transition on CE#. The internal address pointer
will automatically increment until the highest memory
address is reached. Once the highest memory address
is reached, the address pointer will automatically return
to the beginning (wrap-around) of the address space.
Initiate the Read instruction by executing an 8-bit com-
mand, 03H, followed by address bits A[23:0]. CE# must
remain active low for the duration of the Read cycle.
See Figure 5-2 for Read Sequence.
FIGURE 5-2: READ SEQUENCE (SPI)
25119 F05.0
MODE 3
CLK
SIO(3:0)
CE#
MODE 3
C1 C3 C2C0
MODE 0
MODE 3
MODE 0MODE 0
TCPH
Note: C[1:0] = 66H; C[3:2] = 99H
25119 F29.0
CE#
SO
SI
SCK
ADD.
012345678
ADD. ADD.
03
HIGH IMPEDANCE
15 16 23 24 31 32 39 40 7047 48 55 56 63 64
N+2 N+3 N+4N N+1
D
OUT
MSB MSB
MSB
MODE 0
MODE 3
D
OUT
D
OUT
D
OUT
D
OUT
SST26VF064B / SST26VF064BA
DS20005119G-page 16 2015 Microchip Technology Inc.
5.4 Enable Quad I/O (EQIO)
The Enable Quad I/O (EQIO) instruction, 38H, enables
the flash device for SQI bus operation. Upon comple-
tion of the instruction, all instructions thereafter are
expected to be 4-bit multiplexed input/output (SQI
mode) until a power cycle or a “Reset Quad I/O instruc-
tion” is executed. See Figure 5-3.
FIGURE 5-3: ENABLE QUAD I/O SEQUENCE
5.5 Reset Quad I/O (RSTQIO)
The Reset Quad I/O instruction, FFH, resets the device
to 1-bit SPI protocol operation or exits the Set Mode
configuration during a read sequence. This command
allows the flash device to return to the default I/O state
(SPI) without a power cycle, and executes in either 1-
bit or 4-bit mode. If the device is in the Set Mode con-
figuration, while in SQI High-Speed Read mode, the
RSTQIO command will only return the device to a state
where it can accept new command instruction. An addi-
tional RSTQIO is required to reset the device to SPI
mode.
To execute a Reset Quad I/O operation, the host drives
CE# low, sends the Reset Quad I/O command cycle
(FFH) then, drives CE# high. Execute the instruction in
either SPI (8 clocks) or SQI (2 clocks) command
cycles. For SPI, SIO[3:1] are don’t care for this com-
mand, but should be driven to VIH or VIL. See Figures
5-4 and 5-5.
FIGURE 5-4: RESET QUAD I/O SEQUENCE (SPI)
FIGURE 5-5: RESET QUAD I/O SEQUENCE (SQI)
25119 F43.0
MODE 3 0 1
SCK
SIO0
CE#
MODE 0
234567
38
SIO[3:1]
Note: SIO[3:1] must be driven VIH
25119 F73.0
MODE 3 0 1
SCK
SIO0
CE#
MODE 0
234567
FF
SIO[3:1]
Note: SIO[3:1]
25119 F74.0
MODE 3 0 1
SCK
SIO(3:0)
CE#
F
F
MODE 0
2015 Microchip Technology Inc. DS20005119G-page 17
SST26VF064B / SST26VF064BA
5.6 High-Speed Read
The High-Speed Read instruction, 0BH, is supporte d in
both SPI bus protocol and SQI protoco l. This instruction
supports frequencies of up to 104 MHz fro m 2.7- 3.6V
and up to 80 MHz from 2.3-3.6V.On power-up, the
device is set to use SPI.
Initiate High-Speed Read by executing an 8-bit com-
mand, 0BH, followed by address bits A[23-0] and a
dummy byte. CE# must remain active low for the dura-
tion of the High-Speed Read cycle. See Figure 5-6 for
the High-Speed Read sequence for SPI bus protocol.
FIGURE 5-6: HIGH-SPEED READ SEQUENCE (SPI) (C[1:0] = 0BH)
In SQI protocol, the host drives CE# low then send the
Read command cycle command, 0BH, followed by
three address cycles, a Set Mode Configuration cycle,
and two dummy cycles. Each cycle is two nibbles
(clocks) long, most significant nibble first.
After the dummy cycles, the device outputs data on the
falling edge of the SCK signal starting from the speci-
fied address location. The device continually streams
data output through all addresses until terminated by a
low-to-high transition on CE#. The internal address
pointer automatically increments until the highest mem-
ory address is reached, at which point the address
pointer returns to address location 000000H. During
this operation, blocks that are Read-locked will output
data 00H.
The Set Mode Configu ration bit M[7:0] indicates if the
next instruction cycle is another SQI High-S peed Read
command. When M[7:0] = AXH, the device expects the
next continuous instruction to be another Read com-
mand, 0BH, and does not require the op-code to be
entered again. The host may initiate the next Read
cycle by driving CE# low, then sending the four-bits
input for address A[23:0], followed by the Set Mode
configuration bits M[7:0], and two dummy cycles. After
the two dummy cycles, the device outputs the data
starting from the specified address location. There are
no restrictions on address location access.
When M[7:0] is any value other than AXH, the device
expects the next instruction initiated to be a command
instruction. To reset/exit the Set Mode configuration,
execute the Reset Quad I/O command, FFH. While in
the Set Mode configuration, the RSTQIO command will
only return the device to a state where it can accept
new command instruction. An additional RSTQIO is
required to reset the device to SPI mode. See Figure 5-
10 for the SPI Quad I/O Mode Read sequence when
M[7:0] = AXH.
FIGURE 5-7: HIGH-SPEED READ SEQUENCE (SQI)
Address Dummy
CommandCommand Data Byte 0
MSN LSN
Data Byte 7
Mode
25119 F47.0
012
SCK
SIO(3:0)
CE#
C1C0 A5 A4 A3 A2 A1 A0 XH0XXX L0 H8 L8
78 111091312 1514 2120
MODE 3
MODE 0
3456
M1 M0
Note: MSN= Most Significant Nibble, LSN = Least Significant Nibble
Hx = High Data Nibble, Lx = Low Data Nibble C[1:0]=0BH
SST26VF064B / SST26VF064BA
DS20005119G-page 18 2015 Microchip Technology Inc.
5.7 SPI Quad-Output Read
The SPI Quad-Output Read instruction supports fre-
quencies of up to 104 MHz from 2.7-3.6V and up to 80
MHz from 2.3-3.6V . SST26VF064B requires the IOC bit
in the configuration register to be set to ‘1’ prior to exe-
cuting the command. Initiate SPI Quad-Output Read by
executing an 8-bit command, 6BH, followed by address
bits A[23-0] and a dummy byte. CE# must remain
active low for the duration of the SPI Quad Mode Read.
See Figure 5-8 for the SPI Quad Output Read
sequence.
Following the dummy byte, the device outputs data
from SIO[3:0] starting from the specified ad dress loca-
tion. The device continually streams data output
through all addresses unti l terminated by a low-to-high
transition on CE#. The internal address pointer auto-
matically increments until the highest memory address
is reached, at which point the address pointer returns
to the beginning of the address space.
FIGURE 5-8: SPI QUAD OUTPUT READ
CE#
SIO0
SCK
012345678 31 32
24
MODE 3
MODE 0
15 16 23
6BH
25119 F48.3
39 40 41
A[23:16] A[15:8] A[7:0]
b4 b0 b4 b0
b5 b1 b5 b1
b6 b2 b6 b2
b7 b3 b7 b3
SIO1
SIO2
SIO3
Address
OP Code
Data
Byte 0
Dummy
Data
Byte N
X
Note: MSN= Most Significant Nibble, LSN = Least Significant Nibble
2015 Microchip Technology Inc. DS20005119G-page 19
SST26VF064B / SST26VF064BA
5.8 SPI Quad I/O Read
The SPI Quad I/O Read (SQIOR) instruction supports
frequencies of up to 104 MHz from 2.7-3.6V and up to
80 MHz from 2.3-3.6V. SST26VF064B requires the
IOC bit in the configuration register to be set to ‘1’ prior
to executing the command. Initiate SQIOR by execut-
ing an 8-bit command, EBH. The device then switches
to 4-bit I/O mode for address bits A[23-0], followed by
the Set Mode configuration bits M[7:0], and two dummy
bytes.CE# must remain active low for the duration of
the SPI Quad I/O Read. See Figure 5-9 for the SPI
Quad I/O Read sequence.
Following the dummy bytes, the device outputs data
from the specified address location. The device contin-
ually streams data output through all addresses until
terminated by a low-to-high transition on CE#. The
internal address pointer automatically increments until
the highest memory address is reached, at which point
the address pointer returns to the beginning of the
address space.
The Set Mode Configuration bit M[7:0] indicates if the
next instruction cycle is another SPI Quad I/O Read
command. When M[7:0] = AXH, the device expects the
next continuous instruction to be another Read com-
mand, EBH, and does not require the op-code to be
entered again. The host may set the next SQIOR cycle
by driving CE# low , then sending the four-bit wide input
for address A[23:0], followed by the Set Mode configu-
ration bits M[7:0], and two dummy cycles. Af ter the two
dummy cycles, the device outputs the data starting
from the specified address location. There are no
restrictions on address location access.
When M[7:0] is any value other than AXH, the device
expects the next instruction initiated to be a command
instruction. To reset/exit the Set Mode configuration,
execute the Rese t Qua d I/O command, FFH. Se e Fig-
ure 5-10 for the SPI Quad I/O Mode Read sequence
when M[7:0] = AXH.
FIGURE 5-9: SPI QUAD I/O READ SEQUENCE
A20 A16 A12
A8 A4 A0 M4 M0
CE#
SIO0
SCK
012345678 16 17
12
MODE 3
MODE 0
91011
EBH
25119 F49.2
b4 b0
SIO1
SIO2
SIO3
Address Data
Byte 0
Dummy
1513 14 23
1918 2220 21
b4 b0
A21 A17 A13
A9 A5 A1 M5 M1 b5 b1 b5 b1
A22 A18 A14
A10 A6 A2 M6 M2 b6 b2 b6 b2
A23 A19 A15
A11 A7 A3 M7 M3 b7 b3 b7 b3
Set
Mode
Data
Byte 1
MSN LSN
XXXX
XXXX
XXXX
XXXX
Note: MSN= Most Significant Nibble, LSN = Least Significant Nibble
SST26VF064B / SST26VF064BA
DS20005119G-page 20 2015 Microchip Technology Inc.
FIGURE 5-10: BACK-TO-BACK SPI QUAD I/O READ SEQUENCES WHEN M[7:0] = AXH
5.9 Set Burst
The Set Burst command specifies the number of bytes
to be output during a Read Burst command befo re the
device wraps around. It supports both SPI and SQI pro-
tocols. To set the burst length the host drives CE# low,
sends the Set Burst command cycle (C0H) and one
data cycle, then drives CE# high. After power-up or
reset, the burst length is set to eight Bytes (00H). See
Table 5-2 for burst length data and Figures 5-11 and 5-
12 for the sequences.
FIGURE 5-11: SET BURST LENGTH SEQUENCE (SQI)
A20 A16 A12 A8 A4 A0 M4 M0
CE#
SIO0
SCK
01 910
5234
25119 F50.2
b4 b0
SIO1
SIO2
SIO3
Address Data
Byte 0
Dummy
867 1211 13
b4 b0
Set
Mode
MSN LSN
b4 b0
XXXX
A21 A17 A13 A9 A5 A1 M5 M1
b5 b1 b5 b1 b5 b1
XXXX
A22 A18 A14 A10 A6 A2 M6 M2
b6 b2 b6 b2 b6 b2
XXXX
A23 A19 A15 A11 A7 A3 M7 M3
b7 b3 b7 b3 b7 b3
XXXX
Data
Byte
N
Data
Byte
N+1
Note: MSN=
TABLE 5-2: BURST LENGTH DATA
Burst Length High Nibble (H0) Low Nibble (L0)
8 Bytes 0h 0h
16 Bytes 0h 1h
32 Bytes 0h 2h
64 Bytes 0h 3h
25119 F32.0
MODE 3 0 1
SCK
SIO(3:0)
CE#
C1 C0
MODE 0
23
H0 L0
MSN LSN
Note: MSN = Most Significant
Nibble, LSN = Least Significant Nibble, C[1:0]=C0H
2015 Microchip Technology Inc. DS20005119G-page 21
SST26VF064B / SST26VF064BA
FIGURE 5-12: SET BURST LENGTH SEQUENCE (SPI)
5.10 SQI Read Burst with Wrap (RBSQI)
SQI Read Burst with wrap is similar to High Speed
Read in SQI mode, except data will output continuously
within the burst length until a low-to-high transition on
CE#. To execute a SQI Read Burst operation, drive
CE# low then send the Read Burst command cycle
(0CH), followed by three address cycles, and then
three dummy cycles. Each cycle is two nibbles (clocks)
long, most significant nibble first.
After the dummy cycles, the device outputs data on the
falling edge of the SCK signal starting from the speci-
fied address location. The data output stream is contin-
uous through all addresses until terminated by a low-to-
high transition on CE#.
During RBSQI, the internal address pointer automati-
cally increments until the last byte of the burst is
reached, then it wraps around to the first byte of the
burst. All bursts are aligned to addresses within the
burst length, see Table 5-3. For example, if the burst
length is eight Bytes, and the start address is 06h, the
burst sequence would be: 06h, 07h, 00h, 01h, 02h,
03h, 04h, 05h, 06h, etc. The pattern repeats until the
command is terminated by a low-to-high transition on
CE#.
During this operation, blocks that are Read-l ocked will
output data 00H.
5.11 SPI Read Burst with Wrap (RBSPI)
SPI Read Burst with Wrap (RBSPI) is similar to SPI
Quad I/O Read except the data will output continuously
within the burst length until a low-to-high transition on
CE#. To execute a SPI Read Burst with Wrap opera-
tion, drive CE# low, then send the Read Burst com-
mand cycle (ECH), followed by three address cycles,
and then three dummy cycles.
After the dummy cycle, the device outputs data on the
falling edge of the SCK signal starting from the speci-
fied address location. The data output stream is contin-
uous through all addresses until terminated by a low-to-
high transition on CE#.
During RBSPI, the internal address pointer automati-
cally increments until the last byte of the burst is
reached, then it wraps around to the first byte of the
burst. All bursts are aligned to addresses within the
burst length, see Table 5-3. For example, if the burst
length is eight Bytes, and the start address is 06h , the
burst sequence would be: 06h, 07h, 00h, 01h, 02h,
03h, 04h, 05h, 06h, etc. The pattern repeats until the
command is terminated by a low-to-high transition on
CE#.
During this operation, blocks that are Read-locked will
output data 00H.
CE#
SIO0
SCK
012345678 12
MODE 3
MODE 0
91011
C0
25119 F51.0
SIO[3:1]
1513 14
DIN
Note: SIO[3:1] must
TABLE 5-3: BURST ADDRESS RANGES
Burst Length Burst Address Ranges
8 Bytes 00-07H, 08-0FH, 10-17H, 18-1FH...
16 Bytes 00-0FH, 10-1FH, 20-2FH, 30-3FH...
32 Bytes 00-1FH, 20-3FH, 40-5FH, 60-7FH...
64 Bytes 00-3FH, 40-7FH, 80-BFH, C0-FFH
0
SST26VF064B / SST26VF064BA
DS20005119G-page 22 2015 Microchip Technology Inc.
5.12 SPI Dual-Output Read
The SPI Dual-Output Read instruction supports fre-
quencies of up to 104 MHz from 2.7-3.6V and up to 80
MHz from 2.3-3.6V. Initiate SPI Dual-Output Read by
executing an 8-bit command, 3BH, followed by address
bits A[23-0] and a dummy byte. CE# must remain
active low for the duration of the SPI Dual-Output Read
operation. See Figure 5-13 for the SPI Quad Output
Read sequence.
Following the dummy byte, the SST26VF064B/064BA
outputs data from SIO[1:0] starting from the specified
address location. The de vice continually streams data
output through all addresses until terminated by a low-
to-high transition on CE#. The internal address pointer
automatically increments until the highest memory
address is reached, at which point the address po inter
returns to the beginning of the address space.
FIGURE 5-13: FAST READ, DUAL-OUTPUT SEQUENCE
5.13 SPI Dual I/O Read
The SPI Dual I/O Read (SDIOR) instruction supports
up to 80 MHz frequency. Initiate SDIOR by executing
an 8-bit command, BBH. The device then switches to
2-bit I/O mode for address bits A[23-0], followed by the
Set Mode configuration bits M[7:0]. CE# must remain
active low for the duration of the SPI Dual I/O Read.
See Figure 5-14 for the SPI Dual I/O Read seque nce.
Following the Set Mode configuration bits, the
SST26VF064B/064BA outputs data from the specified
address location. The devi ce continually streams data
output through all addresses until terminated by a low-
to-high transition on CE#. The internal address pointer
automatically increments until the highest memory
address is reached, at which point th e address po inter
returns to the beginning of the address space.
The Set Mode Configuration bit M[7:0] indicates if the
next instruction cycle is another SPI Dual I/O Read
command. When M[7:0] = AXH, the device expects the
next continuous instruction to be an other SDIOR com-
mand, BBH, and does not require the op-code to be
entered again. The host may set the next SDIOR cycle
by driving CE# low , then sending the two-bit wide input
for address A[23:0], followed by the Set Mode configu-
ration bits M[7:0]. After the Set Mode configuration bits,
the device outputs the data starting from the specified
address location. There a re no restrictions on address
location access.
When M[7:0] is any value other than AXH, the device
expects the next instruction initiated to be a command
instruction. To reset/exit the Set Mode configuration,
execute the Rese t Qua d I/O command, FF H. Se e Fig-
ure 5-15 for the SPI Dual I/O Read sequence when
M[7:0] = AXH.
CE#
SIO0
SCK
012345678 31 32
24
MODE 3
MODE 0
15 16 23
3BH
25119 F52.3
39 40 41
A[23:16] A[15:8] A[7:0]
b6 b5 b6 b5
SIO1
Address
OP Code Data
Byte 0
Dummy
Data
Byte N
b3 b1 b3 b1
b7 b4 b7 b4
b2 b0 b2 b0
MSB
X
Note: MSB = Most Significant Bit.
2015 Microchip Technology Inc. DS20005119G-page 23
SST26VF064B / SST26VF064BA
FIGURE 5-14: SPI DUAL I/O READ SEQUENCE
FIGURE 5-15: BACK-TO-BACK SPI DUAL I/O READ SEQUENCES WHEN M[7:0] = AXH
753
1
753
1
753
1
75
642
0
CE#
SIO0
SCK
012345678 16 17
12
MODE 3
MODE 0
91011
25119 F53.1
SIO1
A[23:16]
1513 14 23
1918 2220 21
642
0
642
0
64
A[15:8] A[7:0] M[7:0]
753
1
753
1
753
1
75
42
0
CE#(cont’)
SIO0(cont’)
SCK(cont’)
23 24 32 33
2825 26 27
SIO1(cont’)
Byte 0
3129 30 39
3534 3836 37
642
0
642
0
64
Byte 1 Byte 2 Byte 3
206
317
MSB MSB MSB
6
MSB
I/O Switches from Input to Output
BBH
Note: MSB=
753
1
753
1
753
1
75
MODE 3
MODE 0
642
0
CE#
SIO0
SCK
089
412 3
25119 F54.1
SIO1
A[23:16]
756 15
1110 1412 13
642
0
642
0
64
A[15:8] A[7:0] M[7:0]
753
1
753
1
753
1
75
42
0
CE#(cont’)
SIO0(cont’)
SCK(cont’)
15 16 24 25
2017 18 19
SIO1(cont’)
Byte 0
2321 22 31
2726 3028 29
642
0
642
0
64
Byte 1 Byte 2 Byte 3
206
317
MSB MSB MSB
6
MSB
75753
1
4642
0
MSB
6
MSB
I/O Switches from Input to Output
I/O Switch
Note: MSB=
SST26VF064B / SST26VF064BA
DS20005119G-page 24 2015 Microchip Technology Inc.
5.14 JEDEC-ID Read (SPI Protocol)
Using traditional SPI protocol, the JEDEC-ID Read
instruction identifies the device as SST26VF064B/
064BA and the manufacturer as Microchip®. To exe-
cute a JECEC-ID operation the host drives CE# low
then sends the JEDEC-ID command cycle (9FH).
Immediately following the command cycle,
SST26VF064B/064BA output data on the falling edge
of the SCK signal. The data output stream is continu-
ous until terminated by a low-to-high transition on CE#.
The device outputs three bytes of data: manufacturer,
device type, and device ID, see Table 5-4. See Figure
5-16 for instruction sequence.
FIGURE 5-16: JEDEC-ID SEQUENCE (SPI)
5.15 Read Quad J-ID Read (SQI
Protocol)
The Read Quad J-ID Read instruction identifies the
device as SST26VF064B/064 BA and manufacturer as
Microchip. To execute a Qu ad J-ID operation the host
drives CE# low and then sends the Quad J-ID com-
mand cycle (AFH). Each cycle is two nibbles (clocks)
long, most significant nibble first.
Immediately following the command cycle and one
dummy cycle, SST26VF064B/064BA output data on
the falling edge of the SCK signal. The data output
stream is continuous until terminated by a low-to-high
transition of CE#. The device outputs three bytes of
data: manufacturer, device type, and device ID, see
Table 5-4. See Figure 5-17 for instruction sequ ence.
FIGURE 5-17: QUAD J-ID READ SEQUENCE
TABLE 5-4: DEVICE ID DATA OUTPUT
Product Manufacturer ID (Byte 1)
Device ID
Device Type (Byte 2) Device ID (Byte 3)
SST26VF064B/064BA BFH 26H 43H
26 Device ID
25119 F38.0
CE#
SO
SI
SCK
012345678
HIGH IMPEDANCE
15 1614 28 29 30 31
BF
MODE 3
MODE 0
MSBMSB
9 10111213 1718 32 34
9F
19 20 21 22 23 3324 25 26 27
BFH Device ID
Dummy BFH
MSN LSN
26H
26H N
25119 F55.0
012
SCK
SIO(3:0)
CE#
C1C0 X X H0 L0 H1 L1 H0 L1H1L0 HN LN
78 111091312 N
MODE 3
MODE 0
3456
H2 L2
Note: MSN = Most significant Nibble; LSN= Least Significant Nibble. C{1:0]=AFH
2015 Microchip Technology Inc. DS20005119G-page 25
SST26VF064B / SST26VF064BA
5.16 Serial Flash Discoverable
Parameters (SFDP)
The Serial Flash Discoverable Parameters (SFDP)
contain information describing the characteristics of the
device. This allows device-independent, JEDEC ID-
independent, and forward/backward compatible soft-
ware support for all future Seri al Flash device families.
See Table 11-1 on page 66 for address and data val-
ues.
Initiate SFDP by executing an 8-bit command, 5AH, fol-
lowed by address bits A[23-0] and a dummy byte. CE#
must remain active low for the duration of the SFDP
cycle. For the SFDP sequence, see Figure 5-18.
FIGURE 5-18: SERIAL FLASH DISCOVERABLE PARAMETERS SEQUENCE
5.17 Sector-Erase
The Sector-Erase instruction clears all bits in the
selected 4 KByte sector to ‘1,’ but it does not change a
protected memory area. Prior to any write operation,
the Write-Enable (WREN) instruction must be exe-
cuted.
To execute a Sector-Erase operation, the host drives
CE# low, then sends the Sector Erase command cycle
(20H) and three address cycles, and then drives CE#
high. Address bits [AMS:A12] (AMS = Most Significant
Address) determine the sector address (SAX); the
remaining address bits can be VIL or VIH. To identify the
completion of the internal, self-timed, Write operation,
poll the BUSY bit in the S tatus register , or wait TSE. See
Figures 5-19 and 5-20 for the Sector-Erase sequence.
FIGURE 5-19: 4 KBYTE SECTOR-ERASE SEQUENCE– SQI MODE
FIGURE 5-20: 4 KBYTE SECTOR-ERASE SEQUENCE (SPI)
25119 F56.0
CE#
SO
SI
SCK
ADD.
012345678
ADD. ADD.5A
HIGH IMPEDANCE
15 16 23 24 31 32 39 40 47 48 55 56 63 64
N+2 N+3 N+4
NN+1
X
MSB
MODE 0
MODE 3
DOUT DOUT DOUT DOUT
80
71 72
DOUT
25119 F07.0
MODE 3 0 1
SCK
SIO(3:0)
CE#
C1 C0
MODE 0
2
A5 A4
MSN LSN
4
A3 A2
6
A1 A0
Note: MSN = Most Sig-
nificant Nibble, LSN = Least Significant Nibble, C[1:0] = 20H
CE#
SO
SI
SCK
ADD.
012345678
ADD. ADD.
20
HIGH IMPEDANCE
15 16 23 24 31
MODE 0
MODE 3
25119 F57.0
MSBMSB
SST26VF064B / SST26VF064BA
DS20005119G-page 26 2015 Microchip Technology Inc.
5.18 Block-Erase
The Block-Erase instruction clears all bits in the
selected block to ‘1’. Block sizes can be 8 KByte, 32
KByte or 64 KByte depending on address, see Figure
3-1, Memory Map, for details. A Block-Erase instruction
applied to a protected memory area will be ignored.
Prior to any write operation, execute the WREN instruc-
tion. Keep CE# active low for the duration of any com-
mand sequence.
To execute a Block-Erase operation, the host drives
CE# low then sends the Block-Erase command cycle
(D8H), three address cycles, then drives CE# high.
Address bits AMS-A13 determine the block address
(BAX); the remaining address bits can be VIL or VIH. For
32 KByte blocks, A14:A13 can be VIL or VIH; for 64
KByte blocks, A15:A13 can be VIL or VIH. Poll the BUSY
bit in the S t atus register , or wait TBE, for the completion
of the internal, se lf-timed, Block-Erase operation. See
Figures 5-21 and 5-22 for the Block-Erase sequence.
FIGURE 5-21: BLOCK-ERASE SEQUENCE (SQI)
FIGURE 5-22: BLOCK-ERASE SEQUENCE (SPI)
25119 F08.0
MODE 3 0 1
SCK
SIO(3:0)
CE#
C1 C0
MODE 0
2
A5 A4
MSN LSN
4
A3 A2
6
A1 A0
Note: MSN = Most Significant Nibble,
LSN = Least Significant Nibble
C[1:0] = D8H
CE#
SO
SI
SCK
ADDR
012345678
ADDR ADDR
D8
HIGH IMPEDANCE
15 16 23 24 31
MODE 0
MODE 3
25119 F58.0
MSB MSB
2015 Microchip Technology Inc. DS20005119G-page 27
SST26VF064B / SST26VF064BA
5.19 Chip-Erase
The Chip-Erase instruction clears all bits in the device
to ‘1.’ The Chip-Erase instruction is ignored if any of the
memory area is protected. Prior to any write operation,
execute the WREN instruction.
To execute a Chip-Erase operation, the host drives
CE# low , sends the Chip-Erase command cycle (C7H),
then drives CE# high. Poll the BUSY bit in the Status
register , or wait TSCE, for the completion of the internal,
self-timed, Write operation. See Figures 5-23 and 5-24
for the Chip Erase sequence.
FIGURE 5-23: CHIP-ERASE SEQUENCE (SQI)
FIGURE 5-24: CHIP-ERASE SEQUENCE (SPI)
25119 F09.1
MODE 3 0 1
SCK
SIO(3:0)
CE#
C1
C0
MODE 0
Note: C[1:0] = C7H
CE#
SO
SI
SCK
01234567
C7
HIGH IMPEDANCE
MODE 0
MODE 3
25119 F59.0
MSB
SST26VF064B / SST26VF064BA
DS20005119G-page 28 2015 Microchip Technology Inc.
5.20 Page-Program
The Page-Program instruction programs up to 256
Bytes of data in the memory, and supports both SPI
and SQI protocols. The data for the selected page
address must be in the erased state (FFH) before initi-
ating the Page-Program operation. A Page-Program
applied to a protected memory area will be ignored.
Prior to the program operation, execute the WREN
instruction.
To execute a Page-Program op eration , the host d rives
CE# low then sends the Page Program command cycle
(02H), three address cycles followed b y the data to be
programmed, then dr ives CE# high. The programme d
data must be between 1 to 256 Bytes and in whole Byte
increments; sending less than a full Byte will cause the
partial Byte to be ignored. Poll the BUSY bit in the Sta-
tus register, or wait TPP, for the completion of the inter-
nal, self-timed, Write operation. See Figures 5-25 and
5-26 for the Page-Program sequence.
When executing Page-Program, the memory range for
the SST26VF064B/064BA is divided into 256 Byte
page boundaries. The device handles shifting of more
than 256 Bytes of data by maintaining the last 256
Bytes of data as the correct data to be programmed. If
the target address for the Page-Pro gram instruction is
not the beginning of the page boundary (A[7:0] a re not
all zero), and the number of bytes of data input exceeds
or overlaps the end of the address of the page bound-
ary , the excess data inputs wrap around and will be pro-
grammed at the start of that target page.
FIGURE 5-25: PAGE-PROGRAM SEQUENCE (SQI)
FIGURE 5-26: PAGE-PROGRAM SEQUENCE (SPI)
25119 F10.1
MODE 3 0
SCK
SIO(3:0)
CE#
C1 C0
MODE 0
2
A5 A4
MSN LSN
4
A3 A2
6
A1 A0
8
H0 L0
10
H1 L1
12
H2 L2 HN LN
Data Byte 0 Data Byte 1 Data Byte 2 Data Byte 255
Note: MSN = Most Significant Nibble, LSN = Least Significant Nibble
25119 F60.1
CE#
SO
SI
SCK
ADD.
012345678
ADD. ADD. Data Byte 0
02
HIGH IMPEDANCE
15 16 23 24 31 32 39
MODE 0
MODE 3
MSBMSB
MSB LSB
CE#(cont’)
SO(cont’)
SI(cont’)
SCK(cont’)
40 41 42 43 44 45 46 47 48
Data Byte 1
HIGH IMPEDANCE
MSBMSB
MSB LSB
50 51 52 53 54 55
2072
49
Data Byte 2
2073
2074
2075
2076
2077
2078
2079
Data Byte 255
LSBLSB
LSB LSB
2015 Microchip Technology Inc. DS20005119G-page 29
SST26VF064B / SST26VF064BA
5.21 SPI Quad Page-Program
The SPI Quad Page-Program i nstruction programs up
to 256 Bytes of data in the memory. The data for the
selected page address must be in the erased state
(FFH) before initiating the SPI Quad Page-Program
operation. A SPI Quad Page-Program applied to a pro-
tected memory area will be ignored. SST26VF064B
requires the ICO bit in the configuration register to be
set to ‘1’ prior to executing the comman d. Prior to the
program operation, execu t e the WREN instruction.
To execute a SPI Quad Page-Program operation, the
host drives CE# low then sends the SPI Quad Page-
Program command cycle (32H), three address cycles
followed by the data to be programmed, then drives
CE# high. The programmed data must be between 1 to
256 Bytes and in whole Byte increments. The com-
mand cycle is eight clocks long, the address and data
cycles are each two clocks long, most significant bit
first. Poll the BUSY bit in the S tatus register , or wait TPP,
for the completion of the internal, self-timed, Write
operation.See Figure 5-27.
When executing SPI Quad Page-Program, the memory
range for the SST26VF064B/064BA is divided into 256
Byte page boundaries. The device handles shifting of
more than 256 Bytes of data by maintaining the last 256
Bytes of data as the correct data to be programmed. If
the target address for the SPI Quad Page-Program
instruction is not the beginning of the page boundary
(A[7:0] are not all zero), and the of bytes of data input
exceeds or overlaps the end of the address of the page
boundary, the excess data inputs wrap around and will
be programmed at the start of that target page.
FIGURE 5-27: SPI QUAD PAGE-PROGRAM SEQUENCE
5.22 Write-Suspend and Write-Resume
Write-Suspend allows the interruption of Sector-Erase,
Block-Erase, SPI Quad Page-Program, or Page-Pro-
gram operations in order to erase, program, or read
data in another portion of memory. The original opera-
tion can be continued with the Write-Resume com-
mand. This operation is supported in both SQI and SPI
protocols.
Only one write operation can be suspended at a time;
if an operation is already suspended, the device will
ignore the Write-Suspend command. Write-Suspend
during Chip-Erase is ignored; Chip-Erase is not a valid
command while a write is suspended. The Write-
Resume command is igno red until a ny write o peration
(Program or Erase) initiated durin g the Write-Suspend
is complete. The device requires a minimum of 500 µs
between each Write-Suspend command.
5.23 Write-Suspend During Sector-
Erase or Block-Erase
Issuing a Write-Suspend instruction during Sector-
Erase or Block-Erase allows the host to program or
read any sector that was not being erased. The device
will ignore any programming commands pointing to the
suspended sector(s). Any attempt to read from the sus-
pended sector(s) will output unknown data because the
Sector- or Block-Erase will be incomplete.
To execute a Write-Suspend operation, the host drives
CE# low, sends the Write Suspend command cycle
(B0H), then drives CE# high. The Status register indi-
cates that the erase has been suspended by changing
the WSE bit from ‘0’ to ‘1,’ but the device will not accept
another command until it is ready. To determine when
the device will accept a new command, p oll the BUSY
bit in the Status register or wait TWS.
A20 A16 A12
A8 A4 A0 b4 b0
CE#
SIO0
SCK
012345678 16 17
12
MODE 3
MODE 0
91011
32H
25119 F61.0
SIO1
SIO2
SIO3
Address Data
Byte 1
1513 14
A21 A17 A13
A9 A5 A1 b5 b1 b5 b1 b5 b1
A22 A18 A14
A10 A6 A2 b6 b2 b6 b2 b6 b2
A23 A19 A15 A11
A7 A3 b7 b3 b7 b3 b7 b3
Data
Byte 0
Data
Byte
255
MSN LSN
b4 b0 b4 b0
SST26VF064B / SST26VF064BA
DS20005119G-page 30 2015 Microchip Technology Inc.
5.24 Write Suspend During Page
Programming or SPI Quad Page
Programming
Issuing a Write-Suspend instruction during Page Pro-
gramming allows the h ost to erase or read any sector
that is not being programmed. Erase commands point-
ing to the suspended sector(s) will be ignored. Any
attempt to read from the suspended page will output
unknown data because the program will be incomplete.
To execute a Write Suspend operation, the host drives
CE# low, sends the Write Suspend command cycle
(B0H), then drives CE# high. T he Status regi ster indi-
cates that the programming has been suspended by
changing the WSP bit from ‘0’ to ‘1,’ but the device will
not accept another command until it is ready. To deter-
mine when the device will accept a new command, poll
the BUSY bit in the Status register or wait TWS.
5.25 Write-Resume
Writ e-Resume rest arts a W rite command that was sus-
pended, and changes the suspend status bit in the S ta-
tus register (WSE or WSP) back to ‘0’.
To execute a Write-Resume operation, the host drives
CE# low, sends the Write Resume command cycle
(30H), then drives CE# high. To determine if the inter-
nal, self-timed Write operation completed, poll the
BUSY bit in the Status register, or wait the specified
time TSE, TBE or TPP for Sector-Erase, Block-Erase, or
Page-Programming, respectively. The total write time
before suspend and after resume will not exceed the
uninterrupted write times TSE, TBE or TPP.
5.26 Read Security ID
The Read Security ID operation is supported in both
SPI and SQI modes. To execute a Read Security ID
(SID) operation in SPI mode, the host drives CE# low,
sends the Read Security ID command cycle (88H), two
address cycles, and then one dummy cycle. To execute
a Read Security ID operation in SQI mode, the host
drives CE# low and then sends the Read Security ID
command, two address cycles, and three dummy
cycles.
After the dummy cycles, the device output s data on the
falling edge of the SCK signal, starting from the speci-
fied address location. The data output stream is contin-
uous through all SID addresses until terminated by a
low-to-high transition on CE#. See Table 5-5 for the
Security ID address range.
5.27 Program Security ID
The Program Security ID instruction programs one to
2040 Bytes of data in the user-programmable, Security
ID space. This Security ID space is one-time program-
mable (OTP). The device ignores a Program Security
ID instruction pointing to an invalid or protected
address, see Table 5-5. Prior to the program operation,
execute WREN.
To execute a Program SID operation, the host drives
CE# low, sends the Program Security ID command
cycle (A5H), two address cycles, the data to be pro-
grammed, then drives CE# high. The programmed data
must be between 1 to 256 Bytes and in whole Byte
increments.
The device handles sh ifting of more than 256 Bytes of
data by maintaining the last 256 Bytes of data as the
correct data to be programmed. If the target address for
the Program Security ID instruction is not the beginning
of the page boundary, and the number of data input
exceeds or overlaps the end of the address of the page
boundary, the excess data inputs wrap around and will
be programmed at the start of that target page.
The Program Security ID operation is supported in both
SPI and SQI mode. To determine the completion of the
internal, self-timed Program SID operation, poll the
BUSY bit in the software status register, or wait TPSID
for the completion of the internal self-timed Program
Security ID operation.
TABLE 5-5: PROGRAM SECURITY ID
Program Security ID Address Range
Unique ID Pre-Programmed at factory 0000 – 0007H
User Programmable 0008H – 07FFH
2015 Microchip Technology Inc. DS20005119G-page 31
SST26VF064B / SST26VF064BA
5.28 Lockout Security ID
The Lockout Security ID instruction prevents any future
changes to the Security ID, and is supported in both
SPI and SQI modes. Prior to the operation, execute
WREN.
To execute a Lockout SID, the host drives CE# low,
sends the Lockout Security ID command cycle (85H),
then drives CE# high. Poll the BUSY bit in the software
status register, or wait TPSID, for the completion of the
Lockout Security ID operation.
5.29 Read-Status Register (RDSR) and
Read-Configuration Register
(RDCR)
The Read-Status Register (RDSR) and Read-Configu-
ration Register (RDCR) commands output the contents
of the Status and Configuration registers. These com-
mands function in both SPI and SQI modes. The S tatus
register may be read at any ti me, even during a Write
operation. When a Write is in progress, poll the BUSY
bit before sending any new commands to assure that
the new commands are properly received by the
device.
To Read the Status or Configuration registers, the host
drives CE# low, then sends the Read-Status-Register
command cycle (05H) or the Read Configuration Reg-
ister command (35H). A dummy cycle is required in
SQI mode. Immediately after the command cycle, the
device outputs data on the falling edge of the SCK sig-
nal. The data output stream continues until terminated
by a low-to-high transition on CE#. See Figures 5-28
and 5-29 for the instruction sequence.
FIGURE 5-28: READ-STATUS-REGISTER AND READ-CONFIGURATION REGISTER
SEQUENCE (SQI)
FIGURE 5-29: READ-STATUS-REGISTER AND READ-CONFIGURATION REGISTER
SEQUENCE (SPI)
25119 F11.1
MODE 3 0
SCK
SIO(3:0)
CE#
C1 C0
MODE 0
2
XX
MSN LSN
4
H0 L0
6
H0 L0
8
H0 L0
Dummy Data Byte Data Byte Data Byte
Note: MSN = Most Signif-
icant Nibble; LSN = Least Significant Nibble, C[1:0]=05H or 35H
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
25119 F62.0
MODE 3
SCK
SI
SO
CE#
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
05 or 35
MODE 0
HIGH IMPEDANCE
Status or Configuration
Register Out
MSB
MSB
SST26VF064B / SST26VF064BA
DS20005119G-page 32 2015 Microchip Technology Inc.
5.30 Write-Status Register (WRSR)
The Write-Status Register (WRSR) command writes
new values to the Configu ration register. To execute a
Write-Status Register operation, the host drives CE#
low, then sends the Write-Status Register command
cycle (01H), two cycles of data, and then drives CE#
high. Values in the second data cycle will b e accepted
by the device. See Figures 5-30 and 5-31.
FIGURE 5-30: WRITE-STATUS-REGISTER SEQUENCE (SQI)
FIGURE 5-31: WRITE-STATUS-REGISTER SEQUENCE (SPI)
25119 F63.1
MODE 3 0 1
SCK
SIO[3:0]
CE#
C1 C0
MODE 0
2
XX XX
MSN LSN
4
H0 L0
5
3
Status
Byte
Command
Config-
uration
Byte
Note: MSN = Most Sig-
nificant Nibble;
25119 F64.1
MODE 3
HIGH IMPEDANCE
MODE 0
S TAT U S
REGISTER
XX
MSBMSB
01
SCK
SI
SO
CE#
0 1 2 3 4 5 6 7 8 9 101112131415
CONFIGURATION
REGISTER
76543210
MSB
16 17 18 19 20 21 22 23
XX XX XX XX XX XX XX
Note: XX = Don’t Care
2015 Microchip Technology Inc. DS20005119G-page 33
SST26VF064B / SST26VF064BA
5.31 Write-Enable (WREN)
The Write Enable (WREN) instruction sets the Write-
Enable-Latch bit in the Status register to ‘1,’ allowing
Write operations to occur. The WREN instruction must
be executed prior to any of the following operations:
Sector Erase, Block Erase, Chip Erase, Page Program,
Program Security ID, Lockout Security ID, W rite Block-
Protection Register, Lock-Down Block-Protection Reg-
ister , Non-V olatile W rite-Lock Lock-Down Register , SPI
Quad Page program, and Write-Status Register. To
execute a Write Enable the host drives CE# low then
sends the Write Enable command cycle (06H) then
drives CE# high. See Figures 5-32 and 5-33 for the
WREN instruction sequence.
FIGURE 5-32: WRITE-ENABLE SEQUENCE (SQI)
FIGURE 5-33: WRITE-ENABLE SEQUENCE (SPI)
25119 F12.1
MODE 3 0 1
SCK
SIO[3:0]
CE#
06
MODE 0
CE#
SO
SI
SCK
01234567
06
HIGH IMPEDANCE
MODE 0
MODE 3
25119 F18.0
MSB
SST26VF064B / SST26VF064BA
DS20005119G-page 34 2015 Microchip Technology Inc.
5.32 Write-Disable (WRDI)
The Write-Disable (WRDI) instruction sets the Write-
Enable-Latch bit in the S tatus register to ‘0,’ preventing
Write operations. The WRDI instruction is ignored
during any internal write operations. Any Write opera-
tion started before executing WRDI will complete. Drive
CE# high before executing WRDI.
To execute a Write-Disable, the host drives CE# low,
sends the Write Disable command cycle (04H), then
drives CE# high. See Figures 5-34 and 5-35.
FIGURE 5-34: WRITE-DISABLE (WRDI) SEQUENCE (SQI)
FIGURE 5-35: WRITE-DISABLE (WRDI) SEQUENCE (SPI)
25119 F33.1
MODE 3 0 1
SCK
SIO(3:0)
CE#
04
MODE 0
CE#
SO
SI
SCK
01234567
04
HIGH IMPEDANCE
MODE 0
MODE 3
25119 F19.0
MSB
2015 Microchip Technology Inc. DS20005119G-page 35
SST26VF064B / SST26VF064BA
5.33 Read Block-Protection Register
(RBPR)
The Read Block-Protection Register instruction outputs
the Block-Protection register data which determines
the protection status. To execute a Read Block-Protec-
tion Register operation, the host drives CE# low, and
then sends the Read Block-Protection Register com-
mand cycle (72H). A dummy cycle is required in SQI
mode.
After the command cycle, the device outputs data on
the falling edge of the SCK signal starting with the most
significant bit(s), see Table 5-6 for definitions of each bit
in the Block-Protection register. The RBPR command
does not wrap around. After all data has been output,
the device will output 0H until terminated by a low-to-
high transition on CE#. Figures 5-36 and 5-37.
FIGURE 5-36: READ BLOCK-PROTECTION REGISTER SEQUENCE (SQI)
FIGURE 5-37: READ BLOCK-PROTECTION REGISTER SEQUENCE (SPI)
25119 F34.2
MODE 3 0
SCK
SIO[3:0]
CE#
C1 C0
2
H0 L0
MSN LSN
4
H1 L1
6
H2 L2
8
H3 L3
10
H4 L4
12
HN LN
BPR [m:m-7] BPR [7:0]
XX
Note: MSN = Most Significant Nibble, LSN = Least Significant Nibble
Block-Protection Register (BPR), m = 143 for SST26VF064B/064BA, C[1:0]=72H
CE#
SIO0
SCK
012345678 32 33
24
MODE 3
MODE 0
15 16 23
72H
25119 F48.0
SIO
OP Code
Data Byte 0 Data Byte 1 Data Byte 2 Data Byte N
SST26VF064B / SST26VF064BA
DS20005119G-page 36 2015 Microchip Technology Inc.
5.34 Write Block-Protection Register
(WBPR)
The Write Block-Protection Register (WBPR) com-
mand changes the Block-Protection register data to
indicate the protection status. Execute WREN before
executing WBPR.
To execute a Write Block-Protection Register operation
the host drives CE# low , sends the Write Block-Protec-
tion Register command cycle (42H), sends 18 cycles of
data, and finally drives CE# high. Data input must be
most significant bit(s) first. See Table 5-6 for definitions
of each bit in the Block-Protection register . See Figures
5-38 and 5-39.
FIGURE 5-38: WRITE BLOCK-PROTECTION REGISTER SEQUENCE (SQI)
FIGURE 5-39: WRITE BLOCK-PROTECTION REGISTER SEQUENCE (SPI).
25119 F35.1
MODE 3 0
SCK
SIO(3:0)
CE#
C1 C0
MODE 0
2
H0 L0
MSN LSN
4
H1 L1
6
H2 L2
8
H3 L3
10
H4 L4
12
H5 L5 HN LN
BPR [143:136] BPR [7:0]
Note: MS
N = Most Significant Nibble, LSN = Least Significant Nibble
Block-Protection Register (BPR) C[1:0]=42H
CE#
SO
SI
SCK
Data Byte0
012345678
Data Byte1 Data Byte2 Data ByteN
42H
15 16 23 24 31 32
MODE 0
MODE 3
OP Code
25119 F66.1
Note: C[1:0]=42H
2015 Microchip Technology Inc. DS20005119G-page 37
SST26VF064B / SST26VF064BA
5.35 Lock-Down Block-Protection
Register (LBPR)
The Lock-Down Block-Protection Register instruction
prevents changes to the Block-Protection register
during device operation. Lock-Down resets after power
cycling; this allows the Block-Protection register to be
changed. Execute WREN before initiating the Lock-
Down Block-Protection Register instruction.
To execute a Lock-Down Block-Protection Register, the
host drives CE# low , then sends the Lock-Down Block-
Protection Register command cycle (8DH), then drives
CE# high.
FIGURE 5-40: LOCK-DOWN BLOCK-PROTECTION REGISTER (SQI)
FIGURE 5-41: LOCK-DOWN BLOCK-PROTECTION REGISTER (SPI)
25119 F30.1
MODE 3 0 1
SCK
SIO(3:0)
CE#
C1 C0
MODE 0
Note: C[1:0]=8DH
25119 F67.0
MODE 3 0 1
SCK
SIO0
CE#
MODE 0
234567
8D
SIO[3:1]
SST26VF064B / SST26VF064BA
DS20005119G-page 38 2015 Microchip Technology Inc.
5.36 Non-Volatile Write-Lock Lock-
Down Register (nVWLDR)
The Non-Volatile Write-Lock Lock-Down Register
(nVWLDR) instruction controls the ability to change the
Write-Lock bits in the Block-Protection register. Exe-
cute WREN before initiating the nVWLDR instruction.
To execute nVWLDR, the host drives CE# low, then
sends the nVWLDR command cycle (E8H), followed by
18 cycles of data, and then drives CE# high.
After CE# goes high, the non-volatile bits are pro-
grammed and the programming time-out must com-
plete before any additional commands, other than
Read Status Register, can be entered. Poll the BUSY
bit in the St atus register, or wait TPP, for the completion
of the internal, se lf-timed, Write operation. Data inputs
must be most significant bit(s) first.
FIGURE 5-42: WRITE-LOCK LOCK-DOWN REGISTER SEQUENCE (SQI)
FIGURE 5-43: WRITE-LOCK LOCK-DOWN REGISTER SEQUENCE (SPI)
25119 F36.0
MODE 3 0
SCK
SIO(3:0)
CE#
E8
MODE 0
2
H0 L0
MSN LSN
4
H1 L1
6
H2 L2
8
H3 L3
10
H4 L4
12
H5 L5 HN LN
BPR [m:m-7] BPR [7:0]
Note: MSN= Most Significant Nibble; LSN = Least Significant Nibble
Write-Lock Lock-Down Register (nVWLDR) m = 143
CE#
SO
SI
SCK
Data Byte0
012345678
Data Byte1 Data Byte2 Data ByteN
E8H
15 16 23 24 31 32
MODE 0
MODE 3
OP Code
25119 F69.1
2015 Microchip Technology Inc. DS20005119G-page 39
SST26VF064B / SST26VF064BA
5.37 Global Block-Protection Unlock
(ULBPR)
The Global Block-Protection Unlock (ULBPR) instruc-
tion clears all w rite-protection bits in the Block-Protec-
tion register, except for those bits that have been
locked down with the nVWLDR command. Execute
WREN before ini ti a ti ng the ULBPR instruction.
To execute a ULBPR instruction, the host drives CE#
low , then sends the ULBPR command cycle (98H), and
then drives CE# high.
FIGURE 5-44: GLOBAL BLOCK-PROTECTION UNLOCK (SQI)
FIGURE 5-45: GLOBAL BLOCK-PROTECTION UNLOCK (SPI)
25119 F20.1
MODE 3 0 1
SCK
SIO(3:0)
CE#
C1 C0
MODE 0
Note: C[1:0]=98H
25119 F68.0
MODE 3 0 1
SCK
SIO0
CE#
MODE 0
234567
98
SIO[3:1]
SST26VF064B / SST26VF064BA
DS20005119G-page 40 2015 Microchip Technology Inc.
TABLE 5-6: BLOCK-PROTECTION REGISTER FOR SST26VF064B/064BA (1 OF 4)1
BPR Bits
Address Range
Protected Block
SizeRead Lock
Write Lock/
nVWLDR2
143 142 7FE000H - 7FFFFFH 8 KByte
141 140 7FC000H - 7FDFFFH 8 KByte
139 1387FA000H - 7FBFFFH 8 KByte
137 136 7F8000H - 7F9FFFH 8 KByte
135 134 006000H - 007FFFH 8 KByte
133 132 004000H - 005FFFH 8 KByte
131 130 002000H - 003FFFH 8 KByte
129 128000000H - 001FFFH 8 KByte
127 7F0000H - 7F7FFFH 32 KByte
126 008000H - 00FFFFH 32 KByte
125 7E0000H - 7EFFFFH 64 KByte
124 7D0000H - 7DFFFFH 64 KByte
123 7C0000H - 7CFFFFH 64 KByte
122 7B0000H - 7BFFFFH 64 KByte
121 7A0000H - 7AFFFFH 64 KByte
120 790000H - 79FFFFH 64 KByte
119 780000H - 78FFFFH 64 KByte
118770000H - 77FFFFH 64 KByte
117 760000H - 76FFFFH 64 KByte
116 750000H - 75FFFFH 64 KByte
115 740000H - 74FFFFH 64 KByte
114 730000H - 73FFFFH 64 KByte
113 720000H - 72FFFFH 64 KByte
112 710000H - 71FFFFH 64 KByte
111 700000H - 70FFFFH 64 KByte
110 6F0000H - 6FFFFFH 64 KByte
109 6E0000H - 6EFFFFH 64 KByte
1086D0000H - 6DFFFFH 64 KByte
107 6C0000H - 6CFFFFH 64 KByte
106 6B0000H - 6BFFFFH 64 KByte
105 6A0000H - 6AFFFFH 64 KByte
104 690000H - 69FFFFH 64 KByte
103 680000H - 68FFFFH 64 KByte
102 670000H - 67FFFFH 64 KByte
101 660000H - 66FFFFH 64 KByte
100 650000H - 65FFFFH 64 KByte
99 640000H - 64FFFFH 64 KByte
98630000H - 63FFFFH 64 KByte
97 620000H - 62FFFFH 64 KByte
96 610000H - 61FFFFH 64 KByte
95 600000H - 60FFFFH 64 KByte
94 5F0000H - 5FFFFFH 64 KByte
93 5E0000H - 5EFFFFH 64 KByte
2015 Microchip Technology Inc. DS20005119G-page 41
SST26VF064B / SST26VF064BA
92 5D0000H - 5DFFFFH 64 KByte
91 5C0000H - 5CFFFFH 64 KByte
90 5B0000H - 5BFFFFH 64 KByte
89 5A0000H - 5AFFFFH 64 KByte
88 590000H - 59FFFFH 64 KByte
87580000H - 58FFFFH 64 KByte
86 570000H - 57FFFFH 64 KByte
85 560000H - 56FFFFH 64 KByte
84 550000H - 55FFFFH 64 KByte
83 540000H - 54FFFFH 64 KByte
82 530000H - 53FFFFH 64 KByte
81 520000H - 52FFFFH 64 KByte
80 510000H - 51FFFFH 64 KByte
79 500000H - 50FFFFH 64 KByte
784F0000H - 4FFFFFH 64 KByte
77 4E0000H - 4EFFFFH 64 KByte
76 4D0000H - 4DFFFFH 64 KByte
75 4C0000H - 4CFFFFH 64 KByte
74 4B0000H - 4BFFFFH 64 KByte
73 4A0000H - 4AFFFFH 64 KByte
72 490000H - 49FFFFH 64 KByte
71 480000H - 48FFFFH 64 KByte
70 470000H - 47FFFFH 64 KByte
69 460000H - 46FFFFH 64 KByte
68450000H - 45FFFFH 64 KByte
67 440000H - 44FFFFH 64 KByte
66 430000H - 43FFFFH 64 KByte
65 420000H - 42FFFFH 64 KByte
64 410000H - 41FFFFH 64 KByte
63 400000H - 40FFFFH 64 KByte
62 3F0000H - 3FFFFFH 64 KByte
61 3E0000H - 3EFFFFH 64 KByte
60 3D0000H - 3DFFFFH 64 KByte
59 3C0000H - 3CFFFFH 64 KByte
583B0000H - 3BFFFFH 64 KByte
57 3A0000H - 3AFFFFH 64 KByte
56 390000H - 39FFFFH 64 KByte
55 380000H - 38FFFFH 64 KByte
54 370000H - 37FFFFH 64 KByte
53 360000H - 36FFFFH 64 KByte
52 350000H - 35FFFFH 64 KByte
51 340000H - 34FFFFH 64 KByte
50 330000H - 33FFFFH 64 KByte
TABLE 5-6: BLOCK-PROTECTION REGISTER FOR SST26VF064B/064BA (CONTINUED) (2 OF 4)1
BPR Bits
Address Range
Protected Block
SizeRead Lock
Write Lock/
nVWLDR2
SST26VF064B / SST26VF064BA
DS20005119G-page 42 2015 Microchip Technology Inc.
49 320000H - 32FFFFH 64 KByte
48310000H - 31FFFFH 64 KByte
47 300000H - 30FFFFH 64 KByte
46 2F0000H - 2FFFFFH 64 KByte
45 2E0000H - 2EFFFFH 64 KByte
44 2D0000H - 2DFFFFH 64 KByte
43 2C0000H - 2CFFFFH 64 KByte
42 2B0000H - 2BFFFFH 64 KByte
41 2A0000H - 2AFFFFH 64 KByte
40 290000H - 29FFFFH 64 KByte
39 280000H - 28FFFFH 64 KByte
38270000H - 27FFFFH 64 KByte
37 260000H - 26FFFFH 64 KByte
36 250000H - 25FFFFH 64 KByte
35 240000H - 24FFFFH 64 KByte
34 230000H - 23FFFFH 64 KByte
33 220000H - 22FFFFH 64 KByte
32 210000H - 21FFFFH 64 KByte
31 200000H - 20FFFFH 64 KByte
30 1F0000H - 1FFFFFH 64 KByte
29 1E0000H - 1EFFFFH 64 KByte
281D0000H - 1DFFFFH 64 KByte
27 1C0000H - 1CFFFFH 64 KByte
26 1B0000H - 1BFFFFH 64 KByte
25 1A0000H - 1AFFFFH 64 KByte
24 190000H - 19FFFFH 64 KByte
23 180000H - 18FFFFH 64 KByte
22 170000H - 17FFFFH 64 KByte
21 160000H - 16FFFFH 64 KByte
20 150000H - 15FFFFH 64 KByte
19 140000H - 14FFFFH 64 KByte
18130000H - 13FFFFH 64 KByte
17 120000H - 12FFFFH 64 KByte
16 110000H - 11FFFFH 64 KByte
15 100000H - 10FFFFH 64 KByte
14 0F0000H - 0FFFFFH 64 KByte
13 0E0000H - 0EFFFFH 64 KByte
12 0D0000H - 0DFFFFH 64 KByte
11 0C0000H - 0CFFFFH 64 KByte
10 0B0000H - 0BFFFFH 64 KByte
9 0A0000H - 0AFFFFH 64 KByte
8090000H - 09FFFFH 64 KByte
7080000H - 08FFFFH 64 KByte
TABLE 5-6: BLOCK-PROTECTION REGISTER FOR SST26VF064B/064BA (CONTINUED) (3 OF 4)1
BPR Bits
Address Range
Protected Block
SizeRead Lock
Write Lock/
nVWLDR2
2015 Microchip Technology Inc. DS20005119G-page 43
SST26VF064B / SST26VF064BA
6 070000H - 07FFFFH 64 KByte
5 060000H - 06FFFFH 64 KByte
4 050000H - 05FFFFH 64 KByte
3 040000H - 04FFFFH 64 KByte
2 030000H - 03FFFFH 64 KByte
1 020000H - 02FFFFH 64 KByte
0 010000H - 01FFFFH 64 KByte
1. The default state after a power-on reset is write-protected BPR[143:0] = 5555 FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF
2. nVWLDR bits are one-time-programmable. Once a nVWLDR bit is set, the protection state of that particular block is perma-
nently write-locked.
TABLE 5-6: BLOCK-PROTECTION REGISTER FOR SST26VF064B/064BA (CONTINUED) (4 OF 4)1
BPR Bits
Address Range
Protected Block
SizeRead Lock
Write Lock/
nVWLDR2
SST26VF064B / SST26VF064BA
DS20005119G-page 44 2015 Microchip Technology Inc.
6.0 ELECTRICAL SPECIFICATIONS
Absolute Maximum Stress Ratings (Applied conditions greater than those listed under “Absolute Maxi-
mum Stress Ratings” may cause permanent damage to the device. This is a stress rating only and func-
tional operation of the device at these conditions or conditions greater than those defined in the operational
sections of this data sheet is not implied. Exposure to absolute maximum stress rating conditions may
affect device reliability.)
Te m p e r a ture Under Bias . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55°C to +125°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C
D. C. Voltage on Any Pin to Ground Potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to VDD+0.5V
Transient Voltage (<20 ns) on Any Pin to Ground Potential . . . . . . . . . . . . . . . . . . . . . -2.0V to VDD+2.0V
Package Power Dissipation Capability (TA = 25°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0W
Surface Mount Solder Reflow Temp e r a t ure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C for 10 seconds
Output Short Circuit Current1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
1. Output shorted for no more than one second. No more than one output shorted at a time.
TABLE 6-1: OPERATING RANGE
Range Ambient Temp VDD
Industrial -40°C to +85°C 2.3-3.6V
Extended -40°C to +105°C
TABLE 6-2: AC CONDITIONS OF TEST1
1. See Figure 8-5
Input Rise/Fall Time Output Load
3ns CL = 30 pF
2015 Microchip Technology Inc. DS20005119G-page 45
SST26VF064B / SST26VF064BA
6.1 Power-Up Specifications
All functionalities and DC specifications are specified
for a VDD ramp rate of greater than 1V per 100 ms (0V
to 3.0V in less than 300 ms). See Table 6-3 and Figure
6-1 for more information.
When VDD drops from the operating voltage to below
the minimum VDD threshold at powe r-down, all opera-
tions are disabled and the device does not respond to
commands. Data corruption may result if a power-down
occurs while a Write-Registers, program, or erase
operation is in progress. See Figure 6-2.
FIGURE 6-1: POWER-UP TIMING DIAGRAM
TABLE 6-3: RECOMMENDED SYSTEM POWER-UP/DOWN TIMINGS
Symbol Parameter Minimum Max Units Condition
TPU-READ1
1. This parameter is measured only for initial qualification and after a design or process change that could affect this parameter.
VDD Min to Read Operation 100 µs
TPU-WRITE1VDD Min to Write Operation 100 µs
TPD1Power-down Duration 100 ms
VOFF VDD off time 0.3 V0V recommended
Time
VDD Min
VDD Max
VDD
Device fully accessible
TPU-READ
TPU-WRITE
Chip selection is not allowed.
Commands may not be accepted or properly
interpreted by the device.
25119 F27.0
SST26VF064B / SST26VF064BA
DS20005119G-page 46 2015 Microchip Technology Inc.
FIGURE 6-2: POWER-DOWN AND VOLTAGE DROP DIAGRAM
Device
Access
Allowed
TPD
TPU
No Device Access Allowed
Time
VDD Min
VDD Max
VDD
25119 F72.0
VOFF
2015 Microchip Technology Inc. DS20005119G-page 47
SST26VF064B / SST26VF064BA
7.0 DC CHARACTERISTICS
TABLE 7-1: DC OPERATING CHARACTERISTICS (VDD = 2.3 - 3.6V)
Symbol Parameter
Limits
Test ConditionsMin Typ Max Units
IDDR1 Read Current 815 mA VDD=VDD Max,
CE#=0.1 V DD/0.9 VDD@40 MHz,
SO=open
IDDR2 Read Current 20 mA VDD = VDD Max,
CE#=0.1 V DD/0.9 VDD@104 MHz,
SO=open
IDDW Program and Erase Cur-
rent 25 mA VDD Max
ISB Standby Current 15 45 µA CE#=VDD, VIN=VDD or VSS
ILI Input Leakage Current 2µAVIN=GND to VDD, VDD=VDD Max
ILO Output Leakage Current 2µAVOUT=G ND to VDD, VDD=VDD Max
VIL Input Low Voltage 0.8VVDD=VDD Min
VIH Input High Voltage 0.7 VDD VVDD=VDD Max
VOL Output Low Voltage 0.2 VIOL=1 00 µA, VDD=VDD Min
VOH Output High Volt age VDD-0.2 VIOH=-100 µA, VDD=VDD Min
TABLE 7-2: CAPACITANCE (TA = 25°C, F=1 MHZ, OTHER PINS OPEN)
Parameter Description Test Condition Maximum
COUT1
1. This parameter is measured only for initial qualification and after a design or process change that could affect this parameter.
Output Pin Capacitance VOUT = 0V8 pF
CIN1Input Capacitance VIN = 0V6 pF
TABLE 7-3: RELIABILITY CHARACTERISTICS
Symbol Parameter Minimum Specification Units Test Method
NEND1
1. This parameter is measured only for initial qualification and after a design or process change that could affect this parameter.
Endurance 100,000 Cycles JEDEC Standard A117
TDR1Data Retention 100 Years JEDEC Standard A103
ILTH1Latch Up 100 + IDD mA JEDEC Standard 78
TABLE 7-4: WRITE TIMING PARAMETERS (VDD = 2.3 - 3.6V)
Symbol Parameter Minimum Maximum Units
TSE Sector-Erase 25 ms
TBE Block-Erase 25 ms
TSCE Chip-Erase 50 ms
TPP1
1. Estimate for typical conditions less than 256 bytes: Programming Time (µs) = 55 + (3.75 x # of bytes)
Page-Program 1.5 ms
TPSID Program Security-ID 1.5 ms
TWS Write-Suspend Latency 25 µs
TWpen Write-Protection Enable Bit Latency 25 ms
SST26VF064B / SST26VF064BA
DS20005119G-page 48 2015 Microchip Technology Inc.
8.0 AC CHARACTERISTICS
FIGURE 8-1: HOLD TIMING DIAGRAM
TABLE 8-1: AC OPERATING CHARACTERISTICS (VDD1 = 2.3 - 3.6V)
1. Maximum operating frequency for 2.7-3.6V is 104 MHz and for 2.3-3.6V is 80 MHz.
Symbol Parameter
Limits - 40 MHz Limits - 80 MHz Limits - 104 MHz
UnitsMin Max Min Max Min Max
FCLK Serial Clock Frequency 40 80 104 MHz
TCLK Serial Clock Period 25 12.5 9.6 ns
TSCKH Serial Clock High Time 11 5.5 4.5 ns
TSCKL Serial Clock Low Time 11 5.5 4.5 ns
TSCKR2
2. Maximum Rise and Fall time may be limited by TSCKH and TSCKL requirements
Serial Clock Rise Time (slew rate) 0.1 0.1 0.1 V/ns
TSCKF2Serial Clock Fall Time (slew rate) 0.1 0.1 0.1 V/ns
TCES3
3. Relative to SCK.
CE# Active Setup Time 855ns
TCEH3CE# Active Hold Time 855ns
TCHS3CE# Not Active Setup Time 855ns
TCHH3CE# Not Active Hold Time 855ns
TCPH CE# High Time 25 12.5 12 ns
TCHZ CE# High to High-Z Output 19 12.5 12 ns
TCLZ SCK Low to Low-Z Output 000ns
THLS HOLD# Low Setup Time 855ns
THHS HOLD# High Setup Time 855ns
THLH HOLD# Low Hold Time 855ns
THHH HOLD# High Hold Time 855ns
THZ HOLD# Low-to-High-Z Output 888ns
TLZ HOLD# High-to-Low-Z Output 888ns
TDS Data In Setup Time 333ns
TDH Data In Hold T ime 444ns
TOH Output Hold from SCK Change 000ns
TVOutput Valid from SCK 8/5 4
4. 30 pF/10 pF
8/5 48/5 4ns
THZ TLZ
THHH THLS THHS
25119 F43.1
HOLD#
CE#
SCK
SO
SI
THLH
2015 Microchip Technology Inc. DS20005119G-page 49
SST26VF064B / SST26VF064BA
FIGURE 8-2: SERIAL INPUT TIMING DIAGRAM
FIGURE 8-3: SERIAL OUTPUT TIMING DIAGRAM
FIGURE 8-4: RESET TIMING DIAGRAM
TABLE 8-2: RESET TIMING PARAMETERS
TR(i) Parameter Minimum Maximum Units
TR(o) Reset to Read (non-data operation) 20 ns
TR(p) Reset Recovery from Program or Suspend 100 µs
TR(e) Reset Recovery from Erase 1ms
CE#
SIO[3:0]
SCK
MSB LSB
TDS TDH
TCHH TCES TCEH TCHS
TSCKR
TSCKF
TCPH
25119 F70.1
25119 F25.1
CE#
SIO[3:0]
SCK
MSB
TCLZ
TV
TSCKH
TCHZ
TOH
TSCKL
LSB
25119 F14.0
MODE 3
CLK
SIO(3:0)
CE#
MODE 3
C1 C3 C2C0
MODE 0
MODE 3
MODE 0MODE 0
TCPH
Note: C[1:0] = 66H; C[3:2] = 99H
SST26VF064B / SST26VF064BA
DS20005119G-page 50 2015 Microchip Technology Inc.
FIGURE 8-5: AC INPUT/OUTPUT REFERENCE WAVEFORMS
25119 F28.0
REFERENCE POINTS OUTPUTINPUT
VHT
VLT
VHT
VLT
VIHT
VILT
AC test inputs are driven at VIHT (0.9VDD) for a logic ‘1’ and VILT (0.1VDD) for a logic ‘0’. Measure-
ment reference points for inputs and outputs are VHT (0.6VDD) and VLT (0.4VDD). Input rise and
fall times (10% 90%) are <3 ns.
Note: VHT - VHIGH Test
VLT - VLOW Test
VIHT - VINPUT HIGH Test
VILT - VINPUT LOW Test
2015 Microchip Technology Inc. DS20005119G-page 51
SST26VF064B / SST26VF064BA
9.0 PACKAGING INFORMATION
9.1 Package Marking
8-Lead SOIJ (5.28 mm) Example
26F064B
SM
3
e
1506343
XXXXXXXX
YYWWNNN
XXXXXXXX
MF
1506343
26F064B
e3
8-Lead WDFN (5x6 mm) Example
24-Ball TB GA (6 x8 mm ) Example
YYWWNNN
XXXXXXXXXX
XXXXXXXXXX
XXXXXXXXXX
1506343
MN
26F064B
e3
8-Lead WDFN (6x8 mm) Example
16-Lead SOIC (7.50 mm) Example
26F064B
SO
1506343
3
e
YYWWNNN
XXXXXXXXXX
XXXXXXXXXX
XXXXXXXXXX
1506343
TD
26F064B
e3
Continued
SST26VF064B / SST26VF064BA
DS20005119G-page 52 2015 Microchip Technology Inc.
Legend: XX...X Part number or part number code
Y Year code (last digit of calendar year)
YY Year code (last 2 digi ts of calendar year)
WW Week code (week of January 1 is week ‘01’)
NNN Alphanumeric traceability code (2 characters for small packages)
Pb-free JEDEC® designator for Matte Tin (Sn)
Note: For very small packages with no room for the Pb-free JEDEC® designator
, the marking will only appear on the outer carton or reel label.
Note: In the event the full Microchip part number cannot be marked on one line, it will
be carried over to the next line, thus limiting the number of available
characters for customer-specific information.
3
e
3
e
Part Number
1st Line Marking Codes
SOIJ WDFN TBGA SOIC
SST26VF064B 26F064B 26F064B 26F064B 26F064B
SST26VF064BA 26F064B 26F064B 26F064B 26F064B
2015 Microchip Technology Inc. DS20005119G-page 53
SST26VF064B / SST26VF064BA
9.2 Package Diagrams
B
A
0.15 C
0.15 C
D2
E2
8 X b
0.10 C A B
0.05 C
(DATUM B)
(DATUM A)
C
SEATING
PLANE
NOTE 1
2X
BOTTOM VIEW
Microchip Technology Drawing C04-210B Sheet 1 of 2
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
Note:
N
0.10 C A B
0.10 C A B
A3
0.10 C
0.08 C
A1
D
E
NOTE 1
2X
A
12
12
e
SEE DETAIL A
SIDE VIEW
TOP VIEW
N
K
8-Lead Plastic Very, Very Thin Small Outline No-Lead (MF) - 5x6 mm Body [WDFN]
SST26VF064B / SST26VF064BA
DS20005119G-page 54 2015 Microchip Technology Inc.
Microchip Technology Drawing C04-210B Sheet 2 of 2
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
Note:
e/2
e
L
(DATUM A)
DETAIL A
8-Lead Plastic Very, Very Thin Small Outline No-Lead (MF) - 5x6 mm Body [WDFN]
Number of Terminals
Overall Height
Terminal Width
Overall Width
Overall Length
Terminal Length
Exposed Pad Width
Exposed Pad Length
Terminal Thickness
Pitch
Standoff
Units
Dimension Limits
A1
A
b
E
D2
E2
A3
e
L
D
N
1.27 BSC
0.20 REF
0.50
0.35
0.70
0.00
0.42
6.00 BSC
0.60
3.40 BSC
4.00 BSC
0.75
0.02
5.00 BSC
MILLIMETERS
MIN NOM
8
0.70
0.48
0.80
0.05
MAX
K-0.20 -
REF: Reference Dimension, usually without tolerance, for information purposes only.
BSC: Basic Dimension. Theoretically exact value shown without tolerances.
1.
2.
3.
Notes:
Pin 1 visual index feature may vary, but must be located within the hatched area.
Package is saw singulated
Dimensioning and tolerancing per ASME Y14.5M
Terminal-to-Exposed-Pad
2015 Microchip Technology Inc. DS20005119G-page 55
SST26VF064B / SST26VF064BA
A
0.15 C
0.15 C
0.07 C A B
0.05 C
(DATUM B)
(DATUM A)
C
SEATING
PLANE
NOTE 1
12
N
2X
TOP VIEW
SIDE VIEW
BOTTOM VIEW
Microchip Technology Drawing C04-172A Sheet 1 of 2
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
Note:
12
N
0.10 C A B
0.10 C A B
0.10 C
0.08 C
D
E
B
b
E2
D2
e
A3
A1
2X
L8X K
(DATUM B)
(DATUM A)
8-Lead Very, Very Thin Small Outline No-Lead (MN) - 6x8 mm Body [WDFN]
(Also Called WSON)
NOTE 1
SST26VF064B / SST26VF064BA
DS20005119G-page 56 2015 Microchip Technology Inc.
Microchip Technology Drawing C04-172A Sheet 2 of 2
For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
Note:
8-Lead Very, Very Thin Small Outline No-Lead (MN) - 6x8 mm Body [WDFN]
Number of Terminals
Overall Height
Terminal Width
Overall Width
Overall Length
Terminal Length
Exposed Pad Width
Exposed Pad Length
Terminal Thickness
Pitch
Standoff
Units
Dimension Limits
A1
A
b
D
E2
D2
A3
e
L
E
N
1.27 BSC
0.20 REF
0.45
0.35
0.70
0.00
0.40
6.00 BSC
0.50
4.80 BSC
6.00 BSC
0.75
0.02
8.00 BSC
MILLIMETERS
MIN NOM
8
0.55
0.45
0.80
0.05
MAX
K-0.20 -
REF: Reference Dimension, usually without tolerance, for information purposes only.
BSC: Basic Dimension. Theoretically exact value shown without tolerances.
1.
3.
Notes:
Package is saw singulated
Dimensioning and tolerancing per ASME Y14.5M
Terminal-to-Exposed-Pad
(Also Called WSON)
2.
Terminal 1 visual index feature may vary, but must be located within the hatched area.
2015 Microchip Technology Inc. DS20005119G-page 57
SST26VF064B / SST26VF064BA
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
SST26VF064B / SST26VF064BA
DS20005119G-page 58 2015 Microchip Technology Inc.
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
2015 Microchip Technology Inc. DS20005119G-page 59
SST26VF064B / SST26VF064BA
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
SST26VF064B / SST26VF064BA
DS20005119G-page 60 2015 Microchip Technology Inc.
Note: For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging
2015 Microchip Technology Inc. DS20005119G-page 61
SST26VF064B / SST26VF064BA
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DS20005119G-page 62 2015 Microchip Technology Inc.
0LFURFKLS7HFKQRORJ\'UDZLQJ&%6KHHWRI
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2015 Microchip Technology Inc. DS20005119G-page 63
SST26VF064B / SST26VF064BA
TABLE 9-1: REVISION HISTORY
Revision Description Date
A•Initial release of data sheet Mar 2012
B•Revised figures 5-8-5-10on pages 18-20, figures 5-13-5-15 on pages
22-23, figures 5-25- 5-28 on pages 28- 31, figures 5-36-5-39 on pages
36-36, and figures 5-42-5-43 on pages 38-38
•Updated the SFDP Table: Table 11-1 on page 66
Jun 2012
C•Updated document to new format
•Revised CPNs to reflect the new package codes
•Updated package drawings to the new format
•Revised “Hardware Write Protection” on page 8, “Write-Suspend and
Write-Resume” on page 29, and “Lock-Down Block-Protection Regis-
ter (LBPR)” on page 37
•Updated “Power-Up Specifications” on page 45
Apr 2013
D•Updated “Product Identification System” on page 65
•Updated package description for MF package from WSON to WDFN
Sep 2013
E•Updated “SPI Dual I/O Read” on page 22
•Significantly revised Ta ble 11-1 on page 66
Apr 2014
F•Revised “Product Description” on page 1
•Added footnote to Table 7-4 on page 47
•Added information for “MN” package 8-WDFN
•Added Part Markings
•Updated Package definitions for “Product Identification System” on
page 65
Feb 2015
G•Added 2.3-3.6V information throughout
•Added Extended temperature range
•Updated “Product Description” on page 1.
Sep 2015
SST26VF064B / SST26VF064BA
DS20005119G-page 64 2015 Microchip Technology Inc.
THE MICROCHIP WEB SITE
Microchip provides online support via our WWW site at
www.microchip.com. This web site is used as a means
to make files and information easily available to
customers. Accessible by using your favorite Internet
browser, the web site contains the following
information:
•Product Support – Data shee ts and err ata,
application notes and sample programs, design
resources, user’s guides and hardware support
documents, latest software releases and archived
software
•General Technical Support – Frequently Asked
Questions (FAQs), technical support requests,
online discussion groups, Microchip co nsultant
program member listin g
•Business of Microchip – Product selector and
ordering guides, latest Microchip press releases,
listing of seminars and events, listings of
Microchip sales offices, distributors and factory
representatives
CUSTOMER CHANGE NOTIFICATION
SERVICE
Microchip’s customer notification service helps keep
customers current on Microchip products. Subscribers
will receive e-mail notification whenever there are
changes, updates, revisions or errata related to a
specified product family or development tool of interest.
To register, access the Microchip web site at
www.microchip.com. Under “Support”, click on
“Customer Change Notification” and follow the
registration instructions.
CUSTOMER SUPPORT
Users of Microchip products can receive assistance
through several channels:
• Distributor or Representative
• Local Sales Office
• Field Application Engineer (FAE)
• Technical Support
Customers should contact their distributor,
representative or field application engineer (FAE) for
support. Local sales offices are also available to help
customers. A listing of sales offices and locations is
included in the back of this document.
Technical support is available through the web site
at: http://microchip.com/support
2015 Microchip Technology Inc. DS20005119G-page 65
SST26VF064B / SST26VF064BA
10.0 PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
PART NO. XXX
X
Temperature
Operating
Device
Device: SST26VF0 64B = 64 Mbit, 2.5V/3.0V, SQI Flash Memory
WP#/Hold# pin Enab le at power-up
SST26VF064BA = 64 Mbit, 2.5V/3.0V, SQI Flash Memory
WP#/Hold# pin Disab le at power-u p
Tape and
Reel Flag: T = Tape and Reel
(blank) = Tube or Tray
Operating
Frequency: 104 = 104 MHz
Temperature: I = - 40°C to +85°C
V = -40°C to +105°C
Package: MF = WDFN (6mm x 5mm Body), 8-lead
MN = WDFN (6mm x 8mm Body), 8-lead
SM = SOIJ (5.28 mm Body), 8-lead
SO = SOIC (7.50 mm Body), 16-lead
TD = TBGA(>1mm pitch, <1.2mmheight,
6mm x 8 mm Body), 24-lead
Valid Combinations:
SST26VF064B-104I/MF
SST26VF064BT-104I/MF
SST26VF064BA-104I/MF
SST26VF064BAT-104I/MF
SST26VF064B-104V/MF
SST26VF064BT-104V/MF
SST26VF064B-104I/MN
SST26VF064BT-104I/MN
SST26VF064B-104V/MN
SST26VF064BT-104V/MN
SST26VF064B-104I/SM
SST26VF064BT-104I/SM
SST26VF064BA-104I/SM
SST26VF064BAT-104I/SM
SST26VF064B-104V/SM
SST26VF064BT-104V/SM
SST26VF064B-104I/SO
SST26VF064BT-104I/SO
SST26VF064BA-104I/SO
SST26VF064BAT-104I/SO
SST26VF064B-104V/SO
SST26VF064BT-104V/SO
SST26VF064B-104I/TD
SST26VF064BT-104I/TD
X
Tape/Reel
Indicator Frequency
XX
Package
/
–
SST26VF064B / SST26VF064BA
DS20005119G-page 66 2015 Microchip Technology Inc.
11.0 APPENDIX
TABLE 11-1: SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (1 OF 16)
Address Bit Address Data Comments
SFDP Header
SFDP Header: 1st DWORD
00H A7:A0 53H SFDP Signature
SFDP Signature=50444653H
01H A15:A846H
02H A23:A16 44H
03H A31:A24 50H
SFDP Header: 2nd DWORD
04H A7:A0 06H SFDP Minor Revision Number
05H A15:A801H SFDP Major Revision Number
06H A23:A16 02H Number of Parameter Headers (NPH)=3
07H A31:A24 FFH Unused. Contains FF and can not be changed.
Parameter Headers
JEDEC Flash Parameter Header: 1st DWORD
08H A7:A0 00H
Parameter ID Least Significant Bit (LSB) Number.
When this field is set to 00H, it indicates a JEDEC-specified header. For
vendor-specified headers, this field must be set to the vendor’s manufac-
turer ID.
09H A15:A806H
Parameter Table Minor Revision Number
Minor revisions are either clarifications or changes that add parameters
in existing Reserved locations. Minor revisions do NOT change overall
structure of SFDP. Minor Revision starts at 00H.
0AH A23:A16 01H
Parameter Table Major Revision Number
Major revisions are changes that reorganize or add parameters to loca-
tions that are NOT currently Reserved. Major revisions would require
code (BIOS/firmware) or hardware change to get previously defined dis-
coverable parameters. Major Revision starts at 01H
0BH A31:A24 10H Parameter Table Length
Number of DWORDs that are in the Parameter table
JEDEC Flash Parameter Header: 2nd DWORD
0CH A7:A0 30H Parameter Table Pointer (PTP)
A 24-bit address that specifies the start of this header’s Parameter table
in the SFDP structure. The address must be DWORD-ali gned.
0DH A15:A800H
0EH A23:A16 00H
0FH A31:A24 FFH Parameter ID Most Significant Bit (MSB) Number
JEDEC Sector Map Parameter Header: 3rd DWORD
10H A7:A0 81H Parameter ID LSB Number.
Sector map, function-specific table is assigned 81H
11H A15:A800H
Parameter Table Minor Revision Number
Minor revisions are either clarifications or changes that add parameters
in existing Reserved locations. Minor revisions do NOT change overall
structure of SFDP. Minor Revision starts at 00H.
12H A23:A16 01H
Parameter Table Major Revision Number
Major revisions are changes that reorganize or add parameters to loca-
tions that are NOT currently Reserved. Major revisions would require
code (BIOS/firmware) or hardware change to get previously defined dis-
coverable parameters. Major Revision starts at 01H
2015 Microchip Technology Inc. DS20005119G-page 67
SST26VF064B / SST26VF064BA
13H A31:A24 06H Parameter Table Length
Number of DWORDs that are in the Parameter table
JEDEC Sector Map Parameter Header: 4th DWORD
14H A7:A0 00H Parameter Table Pointer (PTP)
This 24-bit address specifies the start of this header’s Parameter Table in
the SFDP structure. The address must be DWORD-aligned.
15H A15:A801H
16H A23:A16 00H
17H A31:A24 FFH Parameter ID MSB Number
Microchip (Vendor) Parameter Header: 5th DWORD
18H A7:A0 BFH ID Number
Manufacture ID (vendor specified header)
19H A15:A800H Parameter Table Minor Revision Number
1AH A23:A16 01H Parameter Table major Revision Number, Revision 1.0
1BH A31:A24 18HParameter Table Length, 24 Double Words
Microchip (Vendor) Parameter Header: 6th DWORD
1CH A7:A0 00H Parameter Table Pointer (PTP)
This 24-bit address specifies the start of this header’s Parameter Table in
the SFDP structure. The address must be DWORD-aligned.
1DH A15:A802H
1EH A23:A16 00H
1FH A31:A24 01H Used to indicate bank number (vendor specific)
JEDEC Flash Parameter Table
JEDEC Flash Parameter Table: 1st DWORD
30H
A1:A0
FDH
Block/Sector Erase Sizes
00: Reserved
01: 4 KByte Erase
10: Reserved
11: Use this setting only if the 4 KByte erase is unavailable.
A2
Write Granularity
0: Single-byte programmable devices or buffer programmable devices
with buffer is less than 64 bytes (32 Words).
1: For buffer programmable devices when the buffer size is 64
bytes (32 Words) or larger.
A3
Volatile Status Register
0: Target flash has nonvolatile status bit. Write/Erase commands do
not require status register to be written on every power on.
1: Target flash volatile status bits
A4
Write Enable Opcode Select for Writing to Volatile Status Register
0: 0x50. Enables a status register write when bit 3 is set to 1.
1: 0x06 Enables a status register write when bit 3 is set to 1.
A7:A5 Unused. Contains 111b and can not be changed
31H A15:A820H 4 KByte Erase Opcode
TABLE 11-1: SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (CONTINUED) (2 OF 16)
Address Bit Address Data Comments
SST26VF064B / SST26VF064BA
DS20005119G-page 68 2015 Microchip Technology Inc.
32H
A16
F1H
Supports (1-1-2) Fast Read
0: (1-1-2) Fast Read NOT supported
1: (1-1-2) Fast Read supported
A18:A17
Address Bytes
Number of bytes used in addressing flash array read, write and erase
00: 3-Byte only addressing
01: 3- or 4-Byte addressing (e.g. defaults to 3-Byte mode; enters 4-Byte
mode on command)
10: 4-Byte only addressing
11: Reserved
A19
Supports Double Transfer Rate (DTR) Clocking
Indicates the d evice support s some type of double transfer rate clocking.
0: DTR NOT supported
1: DTR Clocking supported
A20
Supports (1-2-2) Fast Read
Device supports single input opcode, dual input address, and dual output
data Fast Read.
0: (1-2-2) Fast Read NOT supported.
1: (1-2-2) Fast Read supported.
A21
Supports (1-4-4) Fast Read
Device supports single input opcode, quad input address, and quad out-
put data Fast Read
0: (1-4-4) Fast Read NOT supported.
1: (1-4-4) Fast Read supported.
A22
Supports (1-1-4) Fast Read
Device supports single input opcode & address and quad output data
Fast Read.
0: (1-1-4) Fast Read NOT supported.
1: (1-1-4) Fast Read supported.
A23 Unused. Contains ‘1’ can not be changed.
33H A31:A24 FFH Unused. Contains FF can not be changed
JEDEC Flash Parameter Table: 2nd DWORD
34H A7:A0 FFH Flash Memory Density
SST26VF064B/064BA = 03FFFF FFH
35H A15:A8FFH
36H A23:A16 FFH
37H A31:A24 03H
JEDEC Flash Parameter Table: 3rd DWORD
38H
A4:A0
44H
(1-4-4) Fast Read Number of Wait states (dummy clocks) needed
before valid output
00100b: 4 dummy clocks (16 dummy bits) are needed with a quad input
address phase instruction
A7:A5
Quad Input Address Quad Output (1-4-4) Fast Read Number of Mode
Bits
010b: 2 dummy clocks (8 mode bits) are needed with a single input
opcode, quad input address and quad output data Fast Read Instruction.
39H A15:A8EBH
(1-4-4) Fast Read Opcode
Opcode for single input opcode, quad input address, and quad output
data Fast Read.
TABLE 11-1: SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (CONTINUED) (3 OF 16)
Address Bit Address Data Comments
2015 Microchip Technology Inc. DS20005119G-page 69
SST26VF064B / SST26VF064BA
3AH
A20:A16
08H
(1-1-4) Fast Read Number of Wait states (dummy clocks) needed
before valid output
01000b: 8 dummy bits are needed with a single input opcode & address
and quad output data Fast Read Instruction
A23:A21
(1-1-4) Fast Read Number of Mode Bits
000b: No mode bits are needed with a single input opcode & address and
quad output data Fast Read Instruction
3BH A31:A24 6BH
(1-1-4) Fast Read Opcode
Opcode for single input opcode & address and quad output data Fast
Read.
JEDEC Flash Parameter Table: 4th DWORD
3CH
A4:A0
08H
(1-1-2) Fast Read Number of Wait states (dummy clocks) needed
before valid output
01000b: 8 dummy clocks are needed with a single input opcode, address
and dual output data fast read instruction.
A7:A5
(1-1-2) Fast Read Number of Mode Bits
000b: No mode bits are needed with a single input opcode & address and
quad output data Fast Read Instruction
3DH A15:A83BH (1-1-2) Fast Read Opcode
Opcode for single input opcode& address and dual output data Fast Read.
3EH
A20:A16
80H
(1-2-2) Fast Read Number of Wait states (dummy clocks) needed
before valid output
00000b: 0 clocks of dummy cycle.
A23:A21 (1-2-2) Fast Read Number of Mode Bits (in clocks)
100b: 4 clocks of mode bits are needed
3FH A31:A24 BBH
(1-2-2) Fast Read Opcode
Opcode for single input opcode, dual input address, and dual output data
Fast Read.
JEDEC Flash Parameter Table: 5th DWORD
40H
A0
FEH
Supports (2-2-2) Fast Read
Device supports dual input opcode& address and dual output data Fast
Read.
0: (2-2-2) Fast Read NOT supported.
1: (2-2-2) Fast Read supported.
A3:A1 Reserved. Bits default to all 1’s.
A4
Supports (4-4-4) Fast Read
Device supports Quad input opcode & address and quad output data
Fast Read.
0: (4-4-4) Fast Read NOT supported.
1: (4-4-4) Fast Read supported.
A7:A5 Reserved. Bits default to all 1’s.
41H A15:A8FFH Reserved. Bits default to all 1’s.
42H A23:A16 FFH Reserved. Bits default to all 1’s.
43H A31:A24 FFH Reserved. Bits default to all 1’s.
TABLE 11-1: SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (CONTINUED) (4 OF 16)
Address Bit Address Data Comments
SST26VF064B / SST26VF064BA
DS20005119G-page 70 2015 Microchip Technology Inc.
JEDEC Flash Parameter Table: 6th DWORD
44H A7:A0 FFH Reserved. Bits default to all 1’s.
45H A15:A8FFH Reserved. Bits default to all 1’s.
46H
A20:A16
00H
(2-2-2) Fast Read Number of Wait states (dummy clocks) needed
before valid output
00000b: No dummy bit is needed
A23:A21 (2-2-2) Fast Read Number of Mode Bits
000b: No mode bits are needed
47H A31:A24 FFH
(2-2-2) Fast Read Opcode
Opcode for dual input opcode& address and dual output data Fast Read.
(not supported)
JEDEC Flash Parameter Table: 7th DWORD
48HA7:A0FFHReserved. Bits default to all 1’s.
49H A15:A8FFH Reserved. Bits default to all 1’s.
4AH
A20:A16
44H
(4-4-4) Fast Read Number of Wait states (dummy clocks) needed
before valid output
00100b: 4 clocks dummy are needed with a quad input opcode &
address and quad output data Fast Read Instruction
A23:A21
(4-4-4) Fast Read Number of Mode Bits
010b: 2 clocks mode bits are needed with a quad input opcode & address
and quad output data Fast Read Instruction
4BH A31:A24 0BH (4-4-4) Fast Read Opcode
Opcode for quad input opcode/address, quad output data Fast Read
JEDEC Flash Parameter Table: 8th DWORD
4CH A7:A0 0CH Sector Type 1 Size
4 KByte, Sector/block size = 2N bytes
4DH A15:A820H
Sector Type 1 Opcode
Opcode used to erase the number of bytes specified by Sector T ype 1
Size
4EH A23:A16 0DH Sector Type 2 Size
8 KByte, Sector/block size = 2N bytes
4FH A31:A24 D8H
Sector Type 2 Opcode
Opcode used to erase the number of bytes specified by Sector T ype 2
Size
JEDEC Flash Parameter Table: 9th DWORD
50H A7:A0 0FH Sector Type 3 Size
32 KByte, Sector/block size = 2N bytes
51H A15:A8D8H
Sector Type 3 Opcode
Opcode used to erase the number of bytes specified by Sector T ype 3
Size
52H A23:A16 10H Sector Type 4 Size
64 KByte, Sector/block size = 2N bytes
53H A31:A24 D8H
Sector Type 4 Opcode
Opcode used to erase the number of bytes specified by Sector T ype 4
Size
TABLE 11-1: SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (CONTINUED) (5 OF 16)
Address Bit Address Data Comments
2015 Microchip Technology Inc. DS20005119G-page 71
SST26VF064B / SST26VF064BA
JEDEC Flash Parameter Table: 10th DWORD
54H
A3:A0
20H
Multiplier from typical erase time to maximum erase time
Maximum time = 2*(count + 1)*Typ ical erase time
Count = 0
A3:A0= 0000b
A7:A4
Erase Type 1 Erase, Typical time
Typica l Time = (count +1)*units
1ms to 32ms, 16ms to 512ms, 128ms to 4096ms, 1s to 32s
A10:A9 units (00b:1ms, 01b: 16ms, 10b:128ms, 11b:1s)
A8:A4 count = 18 = 10010b
A10:A9 unit = 1ms = 00b
55H
A10:A8
91H
A10:A8=001b
A15:A11
Erase Type 2 Erase, Typical time
Typical time = (count+1)*units
1ms to 32ms, 16ms to 512ms, 128ms to 4096ms, 1s to 32s
A17:A16 units (00b:1ms, 01b:16ms, 10b:1 28ms, 11b:1s)
A15:A11 count = 18 =10010b
A17:A16 unit = 1ms =00b
56H
A17:A16
48H
A17:A16=00b
A23:A18
Erase Type 3 Erase, Typical time
Typical time = (co unt+1)*units
1ms to 32ms, 16ms to 512ms, 128ms to 4096ms, 1s to 32s
A24:A23 units (00b: 1ms, 01b: 16ms, 10b:128ms, 11b:1s)
A22:A18 count = 18 = 10010b
A24:A23 unit = 1ms = 00b
57H
A24
24H
A24=0b
A31:A25
Erase Type 4 Erase, Typical time
Typical time = (co unt+1)*units
1ms to 32ms, 16ms to 512ms, 128ms to 4096ms, 1s to 32s
A31:A30 units (00b: 1ms, 01b: 16ms, 10b:128ms, 11b:1s)
A29:A25 count=18=10010b
A31:A30 unit = 1ms =00b
JEDEC Flash Parameter Table: 11th DWORD
58H
A3:A0
80H
Multiplier from Typical Program Time to Maximum Program Time
Maximum time = 2*(count +1)*Typical program time.
Count =0.
A3:A0=0000b
A7:A4
Page Size
Page size = 2N bytes.
N=8
A7:A4 =1000b
59H
A13:A8
6FH
Page Program Typical time
Program time = (count+1)*units
A13 units (0b: 8µs, 1b: 64µs)
A12:A8 count=11 = 01111b
A13 unit = 64µs = 1b
A15:A14
Byte Program Typical time, first byte
Typical time = (co unt+1)*units
A18 units (0b: 1µs, 1b: 8µs)
A17:A14 count = 5 = 0101b
A18 =8µs=1b
TABLE 11-1: SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (CONTINUED) (6 OF 16)
Address Bit Address Data Comments
SST26VF064B / SST26VF064BA
DS20005119G-page 72 2015 Microchip Technology Inc.
5AH
A18:A16
1DH
A18:A16=101b
A23:A19
Byte Program Typical time, Additional Byte
Typical time = (co unt+1)*units
A23 units (0b: 1µs, 1b: 8µs)
A22:A19 count = 3 = 0011b
A23=1μs=0b
5BH
A30:A:24
81H
Chip Erase Typical Time
Typical time = (co unt+1)*units
16ms to 512ms, 256ms to 8192ms, 4s to 128s, 64s to 2048s
A28:A24 count =1=00001b
A30:A29 units =16ms=00b
A31 Reserved
A31=1b
JEDEC Flash Parameter Table: 12th DWORD
5CH
A3:A0
EDH
Prohibited Operations During Program Suspend
xxx0b: May not initiate a new erase anywhere
xxx1b:May not initiate a new erase in the program suspended page size
xx0xb:May not initiate a new page program anywhere
xx1xb: May not initiate a new page program in program suspe nded page size.
x0xxb:Refer to the Data Sheet
x1xxb: May not initiate a read in the program suspended page size
0xxxb: Additional erase or program restrictions apply
1xxxb: The erase and program restrictions in bits 1:0 are sufficient
A7:A4
Prohibited Operation During Erase Suspend
xxx0b: May not initiate a new erase anywhere
xxx1b:May not initiate a new erase in the erase suspended page size
xx0xb:May not initiate a new page program anywhere
xx1xb: May not initiate a new page program in erase suspended
erase type size.
x0xxb:Refer to the Data Sheet
x1xxb: May not initiate a read in the erase suspended page size
0xxxb: Additional erase or program restrictions apply
1xxxb: The erase and program restrictions in bits 5:4 are sufficient
5DH
A8
0FH
Reserved = 1b
A12:A9
Program Resume to Suspend Interval
The device requires this typical amount of time to make progress on the
program operation before allowing another suspend.
Interval =500µs
Program resume to suspend interva l =(count+1)*64µs
A12:A9= 7 =0111b
A15:A13
Suspend in-progress program max latency
Maximum time required by the flash device to suspend an in-progress
program and be ready to accept another command which accesses the
flash array.
Max latency = 25µs
program max latency =(count+1)*units
units (00b:128ns, 01b:1µs, 10b:8µs, 11b:64µs)
A17:A13= count = 24 = 11000b
A19:A18 = 1µs =01b
TABLE 11-1: SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (CONTINUED) (7 OF 16)
Address Bit Address Data Comments
2015 Microchip Technology Inc. DS20005119G-page 73
SST26VF064B / SST26VF064BA
5EH
A19:A16
77H
0111b
A23:A20
Erase Resume to Suspend Interval
The device requires this typical amount of time to make progress on the
erase operation before allowing another suspend.
Interval = 500 µs
Erase resume to suspend interval =(coun t+1)*64µs
A23:A20= 7 =0111b
5FH
A30:A24
38H
Suspend in-progress erase max latency
Maximum time required by the flash device to suspend an in-progress
erase and be ready to accept another command which accesses the
flash array.
Max latency = 25µs
Erase max latency =(count+1)*units
units (00b:128ns, 01b:1µs, 10b:8µs, 11b:64µs)
A28:A24= count = 24 = 11000b
A30:A29 = 1µs =01b
A31
Suspend/Resume supported
0:supported
1:not supported
JEDEC Flash Parameter Table: 13th DWORD
60H A7:A0 30H Program Resume Instruction
61H A15:A8B0H Program Suspend Instruction
62H A23:A16 30H Resume Instruction
63H A31:A24 B0H Suspend Instruction
JEDEC Flash Parameter Table: 14th DWORD
64H
A1:A0
F7H
Reserved = 11b
A7:A2
Status Register Polling Device Busy
111101b: Use of legacy polling is supported by reading the status register
with 05h instruction and checking WIP bit [0] (0=ready, 1=busy)
65H A14:A8
FFH Exit Deep Power-down to next operation delay
A15 Exit Power-down Instruction
66H A22:A16 FFH Enter Power-down instruction
A23
67H
A30:A24
FFH
Deep Power-down Supported
0:supported
1:not supported
A31
JEDEC Flash Parameter Table: 15th DWORD
68H
A3:A0
29H
4-4-4 mode disable sequences
Xxx1b: issue FF instruction
1xxxb: issue the Soft Reset 66/99 sequence.
A7:A4 4-4-4 mode enable sequences
X_xx1xb: issue instruction 38h
TABLE 11-1: SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (CONTINUED) (8 OF 16)
Address Bit Address Data Comments
SST26VF064B / SST26VF064BA
DS20005119G-page 74 2015 Microchip Technology Inc.
69H
A8
C2H
4-4-4 mode enable sequences
A8 = 0
A9
0-4-4 mode supported
0:not supported
1:supported
A15:A10
0-4-4 Mode Exit Method
X1_xxxx:Mode Bit[7:0] Not= AXh
1x_xxxx Reserved = 1
6AH
A19:A16
5CH
0-4-4 Mode Entry Method
X1xxb: M[7:0]=AXh
1xxxb:Reserved =1
A22:A20 Quad Enable Requirements (QER)
101b: Quad Enable is bit 1 of the configuration register.
A23 HOLD and Reset Disable
0:feature is not supported
6BH A31:A24 FFH Reserved bits = 0xFF
JEDEC Flash Parameter Table: 16th DWORD
6C A6:A0 F0H
Volatile or Non-Volatile Register and Write Enable Instructions for
Status Register 1
Xx1_xxxxb:Status Register 1 contains a mix of volatile and non-volatile
bits. The 06h instruction is used to enable writing to the register.
X1x_xxxxb: Reserved = 1
1xx_xxxxb: Reserved = 1
A7 Reserved =1b
6D
A13:A8
30H
Soft Reset and Rescue Sequence Support
X1_xxxxb: reset enable instruction 66h is issued followed by reset
instruction 99h.
1x_xxxxb: exit 0-4-4 mode is required prior to other reset sequences.
A15:A14 Exit 4-Byte Addressing
Not supported
6E A23:A16 C0H
Exit 4-Byte Addressing
Not supported
A23 and A22 are Reserved bits which are = 1
6F A31:A24 80H
Enter 4-Byte Addressing
Not supported
1xxx_xxxx: Reserved = 1
JEDEC Sector Map Parameter Table
100H A7:A0 FFH
Sector Map
A7:A2=Reserved=111111b
A1=Descriptor Type = Map=1b
A0=Last map = 1b
101H A15:A800H Configuration ID = 00h
102H A23:A16 04H Region Count = 5 Reg i on s
103H A31:A24 FFH Reserved = FFh
104H A7:A0 F3H
Region 0 supports 4Kbyte erase and 8Kbyte erase
A3:A0=0011b
A7:A4=Reserved=1111b
TABLE 11-1: SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (CONTINUED) (9 OF 16)
Address Bit Address Data Comments
2015 Microchip Technology Inc. DS20005119G-page 75
SST26VF064B / SST26VF064BA
105H A15:A87FH
Region 0 Size
4 * 8Kbytes = 32Kbytes
Count=32Kbytes/256 bytes= 128
Value = count -1 =127
A31:A8 = 00007Fh
106H A23:A16 00H
107H A31:A24 00H
108HA7:A0 F5H
Region 1 supports 4Kbyte erase and 32Kbyte erase
A3:A0 = 0101b
A7:A4=Reserved = 1111b
109H A15:A87FH
Region 1 size
1 * 32Kbytes = 32Kbytes
Count=32Kbytes/256 bytes= 128
Value = count -1 =127
A31:A8 = 00007Fh
10AH A23:A16 00H
10BH A31:A24 00H
10CH A7:A0 F9H
Region 2 supports 4 KByte erase and 64 KByte erase
A3:A0 = 1001b
A7:A4=Reserved = 1111b
10DH A15:A8FFH
Region 2 size
126 * 64 KBytes = 8064 KBytes
Count=8064Kbytes/256 bytes= 32256
Value = count -1 =32255
A31:A8 = 007DFFh
10EH A23:A16 7DH
10FH A31:A24 00H
110H A7:A0 F5H
Region 3 supports 4 KByte erase and 32 KByte erase
A3:A0 = 0101b
A7:A4=Reserved = 1111b
111H A15:A87FH
Region 3 size
1 * 32 KBytes = 32 KBytes
Count=32 KBytes/256 bytes= 12 8
Value = count -1 =127
A31:A8 = 00007Fh
112H A23:A16 00H
113H A31:A24 00H
114H A7:A0 F3H
Region 4 supports 4 KByte erase and 8 KByte erase
A3:A0=0011b
A7:A4=Reserved=1111b
115H A15:A87FH
Region 4 Size
4 * 8 KBytes = 32 KBytes
Count=32Kbytes/256 bytes= 128
Value = count -1 =127
A31:A8 = 00007Fh
116H A23:A16 00H
117H A31:A24 00H
TABLE 11-1: SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (CONTINUED) (10 OF 16)
Address Bit Address Data Comments
SST26VF064B / SST26VF064BA
DS20005119G-page 76 2015 Microchip Technology Inc.
SST26VF064B/064BA (Vendor) Parameter Table
SST26VF064B/064BA Identification
200H A7:A0 BFH Manufacturer ID
201H A15:A826H Memory Type
202H A23:A16 43H Device ID
SST26VF064B/064BA=43H
203H A31:A24 FFH Reserved. Bits default to all 1’s.
SST26VF064B/064BA Interface
204H
A2:A0
B9H
Interfaces Supported
000: SPI only
001: Power up default is SPI; Quad can be enabled/disabled
010: Reserved
: :
111: Reserved
A3
Supports Enable Quad
0: not supported
1: supported
A6:A4
Supports Hold#/Reset# Function
000: Hold#
001: Reset#
010: HOLD/Reset#
011: Hold# & I/O when in SQI(4-4-4), 1-4-4 or 1-1-4 Read
A7
Supports Software Reset
0: not supported
1: supported
205H
A8
5FH
Supports Quad Reset
0: not supported
1: supported
A10:A9 Reserved. Bits default to all 1’s
A13:A11
Byte-Program or Page-Program (256 Bytes)
011: Byte Program/Page Program in SPI and Quad Page Program once
Quad is enabled
A14
Program-Erase Suspend Supported
0: Not Supported
1: Program/Erase Suspend Supported
A15
Deep Power-Down Mode Supported
0: Not Supported
1: Deep Power-Down Mode Supported
TABLE 11-1: SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (CONTINUED) (11 OF 16)
Address Bit Address Data Comments
2015 Microchip Technology Inc. DS20005119G-page 77
SST26VF064B / SST26VF064BA
206H
A16
FDH
OTP Capable (Security ID) Supported
0: not supported
1: supported
A17
Supports Block Group Protect
0: not supported
1: supported
A18
Supports Independent Block Protect
0: not supported
1: supported
A19
Supports Independent non Volatile Lock (Block or Sector becomes
OTP)
0: not supported
1: supported
A23:A20 Reserved. Bits default to all 1’s.
207H A31:A24 FFH Reserved. Bits default to all 1’s.
208H A7:A0 30H VDD Minimum Supply Voltage
2.3V (F230H)
209H A15:A8F2H
20AH A23:A16 60H VDD Maximum Supply Voltage
3.6V (F360H)
20BH A31:A24 F3H
20CH A7:A0 32H
Typical time out for Byte-Program: 50 µs
Typical time out for Byte Program is in µs. Represented by conversion of
the actual time from the decimal to hexadecimal number.
20DH A15:A8FFH Reserved. Bits default to all 1’s.
20EH A23:A16 0AH Typical time out for page program: 1.0ms (xxH*(0.1ms)
20FH A31:A24 12H
Typical time out for Sector-Erase/Block-Erase: 18 ms
T ypical time out for Sector/Block-Erase is in ms. Represented by conversion
of the actual time from the decimal to hexadeci mal num ber.
210H A7:A0 23H
Typical time out for Chip-Erase: 35 ms
Typical time out for Chip-Erase is in ms. Represented by conversion of
the actual time from the decimal to hexadecimal number.
211H A15:A846H
Max. time out for Byte-Program: 70 µs
Typical time out for Byte Program is in µs. Represented by conversion of
the actual time from the decimal to hexadecimal number.
212H A23:A16 FFH Reserved. Bits default to all 1’s.
213H A31:A24 0FH Max time out for Page-Program: 1.5ms.
Typica l time out for Page Program in xxH * (0.1ms) ms
214H A7:A0 19H Max. time out for Sector Erase/Block Erase: 25ms.
Max time out for Sector/Block Erase in ms
215H A15:A832H Max. time out for Chip Erase: 50ms.
Max time out for Chip Erase in ms.
216H A23:A16 0FH Max. time out for Program Security ID: 1.5 ms
Max time out for Program Security ID in xxH*(0.1ms) ms
217H A31:A24 19H
Max. time out for Write-Protection Enable Latency: 25 ms
Max time out for Wr ite-Protection Enable Latency is in ms. Represented by con-
version of the actual time from the decimal to hexadecimal number .
218H A23:A16 19H
Max. time Write-Suspend Latency: 25 µs
Max time out for Wr ite-Suspend Latency is in µs. Represented by conversion of
the actual time from the dec imal to hexadecimal number .
219H A31:A24 FFH Max. time to Deep Power-Down
0FFH = Reserved
TABLE 11-1: SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (CONTINUED) (12 OF 16)
Address Bit Address Data Comments
SST26VF064B / SST26VF064BA
DS20005119G-page 78 2015 Microchip Technology Inc.
21AH A23:A16 FFH Max. time out from Deep Power-Down mode to Standby mode
0FFH = Reserved
21BH A31:A24 FFH Reserved. Bits default to all 1’s.
21CH A23:A16 FFH Reserved. Bits default to all 1’s.
21DH A31:A24 FFH Reserved. Bits default to all 1’s.
21EH A23:A16 FFH Reserved. Bits default to all 1’s.
21FH A31:A24 FFH Reserved. Bits default to all 1’s.
Supported Instructions
220H A7:A0 00H No Operation
221H A15:A866H Reset Enable
222H A23:A16 99H Reset Memory
223H A31:A24 38HEnable Quad I/O
224H A7:A0 FFH Reset Quad I/O
225H A15:A805H Read Status Register
226H A23:A16 01H Write Status Register
227H A31:A24 35H Read Configuration Register
228H A7:A0 06H Write Enable
229H A15:A804H Write Disable
22AH A23:A16 02H Byte Program or Page Program
22BH A31:A24 32H SPI Quad Page Program
22CH A7:A0 B0H Suspends Program/Erase
22DH A15:A830H Resumes Program/Erase
22EH A23:A16 72H Read Block-Protection register
22FH A31:A24 42H Write Block Protection Register
230H A7:A0 8DH Lock Down Block Protection Register
231H A15:A8E8Hnon-Volatile Write-Lock Down Register
232H A23:A16 98HGlobal Block Protection Unlock
233H A31:A24 88HRead Security ID
234H A7:A0 A5H Program User Security ID Area
235H A15:A885H Lockout Security ID Programming
236H A23:A16 C0H Set Burst Length
237H A31:A24 9FH JEDEC-ID
238H A7:A0 AFH Quad J-ID
239H A15:A85AH SFDP
23AH A23:A16 FFH Deep Power-Down Mode
FFH = Reserved
23BH A31:A24 FFH Release Deep Power-Down Mode
FFH = Reserved
23CH
A4:A0
06H
(1-4-4) SPI nB Burst with Wrap Number of Wait states (dummy
clocks) needed before valid output
00110b: 6 clocks of dummy cycle
A7:A5 (1-4-4) SPI nB Burst with Wrap Number of Mode Bits
000b: Set Mode bits are not supported
23DH A15:A8ECH (1-4-4) SPI nB Burst with Wrap Opcode
TABLE 11-1: SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (CONTINUED) (13 OF 16)
Address Bit Address Data Comments
2015 Microchip Technology Inc. DS20005119G-page 79
SST26VF064B / SST26VF064BA
23EH
A20:A16
06H
(4-4-4) SQI nB Burst with Wrap Number of Wait states (dummy
clocks) needed before valid output
00110b: 6 clocks of dummy cycle
A23:A21 (4-4-4) SQI nB Burst with Wrap Number of Mode Bits
000b: Set Mode bits are not supported
23FH A31:A24 0CH (4-4-4) SQI nB Burst with Wrap Opcode
240H
A4:A0
00H
(1-1-1) Read Memory Number of Wait states (dummy clocks) needed
before valid output
00000b: Wait states/dummy clocks are not supported.
A7:A5 (1-1-1) Read Memory Number of Mode Bits
000b: Mode bits are not supported,
241H A15:A803H (1-1-1) Read Memory Opcode
242H
A20:A16
08H
(1-1-1) Read Memory at Higher Speed Number of Wait states
(dummy clocks) needed before valid output
01000: 8 clocks (8 bits) of dummy cycle
A23:A21 (1-1-1) Read Memory at Higher Speed Number of Mode Bits
000b: Mode bits are not supported,
243H A31:A24 0BH (1-1-1) Read Memory at Higher Speed Opcode
244H A7:A0 FFH Reserved. Bits default to all 1’s.
245H A15:A8FFH Reserved. Bits default to all 1’s.
246H A23:A16 FFH Reserved. Bits default to all 1’s.
247H A31:A24 FFH Reserved. Bits default to all 1’s.
Security ID
248HA7:A0 FFHSecurity ID size in bytes
Example: If the size is 2 KBytes, this field would be 07FFH
249H A15:A807H
24AH A23:A16 FFH Reserved. Bits default to all 1’s.
24BH A31:A24 FFH Reserved. Bits default to all 1’s.
Memory Organization/Block Protection Bit Mapping 1
24CH A7:A0 02H Section 1: Sector Type Number:
Sector type in JEDEC Parameter Table (bottom, 8 KByte)
24DH A15:A802H Section 1 Number of Sectors
Four of 8KB block (2n)
24EH A23:A16 FFH
Section 1 Block Protection Bit Start
((2m) +1)+ c, c=FFH or -1, m= 7 for 64 Mb
Address bits are Read Lock bit locations and Even Address bits are Write
Lock bit locations. The most significant (left-most) bit indicates the sign of
the integer; it is sometimes called the sign bit. If the sign bit is zero, then
the number is greater than or equal to zero, or positive. If the sign bit is
one then the number is less than zero or negative.
TABLE 11-1: SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (CONTINUED) (14 OF 16)
Address Bit Address Data Comments
Security ID Range
Unique ID
(Pre-programmed at factory) 0000H - 0007H
User Programmable 0008H - 07FFH
SST26VF064B / SST26VF064BA
DS20005119G-page 80 2015 Microchip Technology Inc.
24FH A31:A24 06H
Section 1 (bottom) Block Protection Bit End
((2m) +1)+ c, c=06H or 6, m= 7 for 64 Mb
Address bits are Read Lock bit locations and Even Address bits are Write
Lock bit locations. The most significant (left-most) bit indicates the sign of
the integer; it is sometimes called the sign bit. If the sign bit is zero, then
the number is greater than or equal to zero, or positive. If the sign bit is
one then the number is less than zero or negative.
250H A7:A0 03H Section 2: Sector Type Number
Sector type in JEDEC Parameter Table (32KB Block)
251H A15:A800H Section 2 Number of Sectors
One of 32KB Block (2n, n=0)
252H A23:A16 FDH
Section 2 Block Protection Bit Start
((2m) +1)+ c, c=FDH or -3, m= 7 for 64 Mb
The most significant (left-most) bit indicates the sign of the integer; it is
sometimes called the sign bit. If the sign bit is zero, then the number is
greater than or equal to zero, or positive . If the sign bit is one then the
number is less than zero or negative.
253H A31:A24 FDH
Section 2 Block Protection Bit End
((2m) +1)+ c, c=FDH or -3, m= 7 for 64 Mb
The most significant (left-most) bit indicates the sign of the integer; it is
sometimes called the sign bit. If the sign bit is zero, then the number is
greater than or equal to zero, or positive . If the sign bit is one then the
number is less than zero or negative.
254H A7:A0 04H Section 3: Sector Type Number
Sector type in JEDEC Parameter Table (64KB Block)
255H A15:A807H Section 3 Number of Sectors
126 of 64KB Block (2m-2, m= 7 for 64 Mb)
256H A23:A16 00H Section 3 Block Protection Bit Start
Section 3 Block Protection Bit starts at 00H
257H A31:A24 FCH Section 3 Block Protection Bit End
((2m) +1)+ c, c=FCH or -4, m= 7 for 64 Mb
258H A7:A0 03H Section 4: Sector Type Number
Sector type in JEDEC Parameter Table (32KB Block)
259H A15:A800H Section 4 Number of Sectors
One of 32KB Block (2n, n=0)
25AH A23:A16 FEH
Section 4 Block Protection Bit Start
((2m) +1)+ c, c=FEH or -2, m= 7 for 64 Mb
The most significant (left-most) bit indicates the sign of the integer; it is
sometimes called the sign bit. If the sign bit is zero, then the number is
greater than or equal to zero, or positive . If the sign bit is one then the
number is less than zero or negative.
25BH A31:A24 FEH
Section 4 Block Protection Bit End
((2m) +1)+ c, c=FEH or -2, m= 7 for 64 Mb
The most significant (left-most) bit indicates the sign of the integer; it is
sometimes called the sign bit. If the sign bit is zero, then the number is
greater than or equal to zero, or positive . If the sign bit is one then the
number is less than zero or negative.
25CH A7:A0 02H Section 5 Sector Type Number:
Sector type in JEDEC Parameter Table (top, 8 KByte)
25DH A15:A802H Section 5 Number of Sectors
Four of 8KB block (2n)
TABLE 11-1: SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (CONTINUED) (15 OF 16)
Address Bit Address Data Comments
2015 Microchip Technology Inc. DS20005119G-page 81
SST26VF064B / SST26VF064BA
11.1 Mapping Guidance Details
The SFDP Memory Organization/Block Protection Bit
Mapping defines the memory organization including
uniform sector/block sizes and different contiguous
sectors/blocks sizes. In addition, this bit defines the
number of these uniform and different sectors/blocks
from address 000000H to the full range of Memory and
the associated Block Locking Register bits of each sec-
tor/block.
Each major Section is defined as follows:
A Major Section consists of Sector T ype Number , Num-
ber of Sector of this type, and the Block-Protection Bit
S tart/End locations. This is tied directly to JEDEC Flash
Parameter Table Sector Size T ype (in 7th DWORD and
8th DWORD section). Note that the contiguous 4KByte
Sectors across the full memory range are not included
on this section because they are not defined in the
JEDEC Flash Parameter Table Sector Size Type sec-
tion. Only the sectors/blocks that are dependently tied
with the Block-Protection Register bits are defined. A
major section is a partition of contiguous same-size
sectors/blocks. There will be several Major Sections as
you dissect across memory from 000000h to the full
range. Similar sector/b lock size that re-a ppear may b e
defined as a different Major Section.
11.1.1 SECTOR TYPE NUMBER
Sector Type Number is the sector/block size typed
defined in JEDEC Flash Parameter Table: SFDP
address locations 4CH, 4EH, 50H, and 52H. For SFDP
address location 4CH, which is Sector Type 1, the size
is represented by 01H; SFDP address location 4EH,
Sector Type 2, size is represented by 02H; SFDP
address location 50H, Sector Type 3, size is repre-
sented by 03H; and SFDP ad dress location 5 2H, Sec-
tor Type 4, size is represented by 04H. Contiguous
Same Sector Type # Size can re-emerge across the
memory range and this Sector Type # will indicate that
it is a separate/independent Major Section from the
previous contiguous sectors/blocks.
11.1.2 NUMBER OF SECTORS
Number of Sectors represents the number of contigu-
ous sectors/blocks with similar size. A formula calcu-
lates the contiguous sectors/blocks with similar size.
Given the sector/block size, type, and the number of
sectors, the address range of these sectors/blocks can
be determined along wi th specific Block Locking Reg-
ister bits that control the read/write protection of each
sectors/blocks.
25EH A23:A16 07H
Section 5 Block Protection Bit Start
((2m) +1)+ c, c=07H or 7, m= 7 for 64 Mb
Address bits are Read Lock bit locations and Even Address bits are Write
Lock bit locations. The most significant (left-most) bit indicates the sign of
the integer; it is sometimes called the sign bit. If the sign bit is zero, then
the number is greater than or equal to zero, or positive. If the sign bit is
one then the number is less than zero or negative.
25FH A31:A24 0EH
Section 5 (Top) Block Protection Bit End
(((2m) +1)+ c, c=0EH or 14, m= 7 for 64 Mb,
Address bits are Read Lock bit locations and Even Address bits are Write
Lock bit locations. The most significant (left-most) bit indicates the sign of
the integer; it is sometimes called the sign bit. If the sign bit is zero, then
the number is greater than or equal to zero, or positive. If the sign bit is
one then the number is less than zero or negative.
1. See “Mapping Guidance Details” for more detailed mapping information
TABLE 11-1: SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (CONTINUED) (16 OF 16)
Address Bit Address Data Comments
TABLE 11-2: SECTION DEFINITION
Major Section X Section X: Sector Type Number
Section X: Number of Sectors
Section X: Block-Protection Register Bit Start Location
Section X: Block-Protection Register Bit End Location
SST26VF064B / SST26VF064BA
DS20005119G-page 82 2015 Microchip Technology Inc.
11.1.3 BLOCK-PROTECTION REGISTER
BIT START LOCATION (BPSL)
Block-Protection Register Bit Start Location (BPSL)
designates the start bit location in the Block-Protection
Register where the first sector/block of this Major Sec-
tion begins. If the value of BPSL is 00H, this location is
the 0 bit location. If th e value is other than 0 , then this
value is a constant value adder (c) for a given formula,
(2m + 1) + (c). See “Memory Configuration”.
From the initial location, there will be a bit location for
every increment by 1 until it reaches the Block Protec-
tion Register Bit End Location (BPEL). This number
range from BPSL to BPEL will correspond to, and be
equal to, the number of sectors/blocks on this Major
Section.
11.1.4 BLOCK PROTECTION REGISTER
BIT END LOCATION (BPEL)
Block Protection Register Bit End Location designates
the end bit location in the Block Protection Re gister bit
where the last sector/block of this Major Section ends.
The value in this field is a constant value adder (c) for
a given formula or equation, (2m + 1) + (c). See “Mem-
ory Configuration”
11.1.5 MEMORY CONFIGURATION
For the SST26VF064B/064BA family, the memory con-
figuration is setup with different contiguous block sizes
from bottom to the top of the memory. For example,
starting from bottom of memory it has four 8KByte
blocks, one 32KByte block, x number of 64KByte
blocks depending on memory size, then one 32KByte
block, and four 8KByte block on the top of memory . See
Table 11-3.
Classifying these sector/block sizes via the Sector
Type derived from JEDEC Flash Parameter Table:
SFDP address locations 4EH, 50H, and 52H is as fol-
lows:
• 8KByte Blocks are classified as Sector Type 2
(@4EH of SFDP)
• 32KByte Blocks are classified as Sector Type 3
(@50H of SFDP)
• 64KByte Blocks are classified as Sector Type 4
(@52H of SFDP)
For the Number of Sectors asso ciated with the contig-
uous sectors/blocks, a formula is used to determine the
number of sectors/blocks of these Sector Types:
• 8KByte Block (Type 2) is calculated by 2n. n is a byte.
• 32KByte Block (Type 3) is calculated by 2n. n is a
byte.
• 64KByte Block (Type 4) is calculated by (2m - 2). m
can either be a 4, 5, 6, 7 or 8 depend ing on the mem-
ory size. This m field is going to be used for the
64KByte Block Section and will also be used for the
Block Protection Register Bi t Location formula.
TABLE 11-3: MEMORY BLOCK DIAGRAM REPRESENTATION
8 KByte Bottom Block
(from 000000H) Section 1: Sector Type Number
Section 1: Number of Secto rs
Section 1: Block-Protection Register Bit Start Location
Section 1: Block-Protection Register Bit End Location
32 KByte Section 2: Sector Type Numbe r
Section 2: Number of Sectors
Section 2: Block-Protection Register Bit Start Location
Section 2: Block-Protection Register Bit End Location
64 KByte Section 3: Sector Type Numbe r
Section 3: Number of Sectors
Section 3: Block-Protection Register Bit Start Location
Section 3: Block-Protection Register Bit End Location
32 KByte Section 4: Sector Type Numbe r
Section 4: Number of Sectors
Section 4: Block-Protection Register Bit Start Location
Section 4: Block-Protection Register Bit End Location
8 KByte (Top Block) Section 5: Sector Type Number
Section 5: Number of Sectors
Section 5: Block-Protection Register Bit Start Location
Section 5: Block-Protection Register Bit End Location
2015 Microchip Technology Inc. DS20005119G-page 83
SST26VF064B / SST26VF064BA
m will have a constant value for specific densities and
is defined as:
•8Mbit = 4
• 16Mbit = 5
• 32Mbit = 6
• 64Mbit = 7
• 128Mbit = 8
Block Protect Register S tart/End Bits are mapped in the
SFDP by using the formula (2m + 1) + (c). “m” is a con-
stant value that represents the different densities from
8Mbit to 128Mbit (used also in the formula calculating
number of 64Kbyte Blocks above). The values that are
going to be placed in the Block Protection Bit S tart/End
field table are the constant value adder (c) in the for-
mula and are represented in two’s compliment except
when the value is 00H. If the value is 00H, this location
is the 0 bit location. If the value is other than 0, then this
is a constant value adder (c) that will be used in the for-
mula. The most significant (left most) bit indicates the
sign of the integer; it is sometimes called the sign bit.
If the sign bit is zero, then the number is greater than or
equal to zero, or positive. If the sign bit is one, then the
number is less than zero, or negative.
See Table 1 1-4 for an example of this formula.
TABLE 11-4: BPSL/BPEL EQUATION WITH ACTUAL CONSTANT ADDER DERIVED FROM THE
FORMULA (2M + 1) + (C)
Block Size 8 Mbit to 128 Mbit Comments
8 KByte (Type 2) Bottom BPSL = (2m + 1) + 0FFH
BPEL = (2m + 1) + 04H 0FFH = -1; 06H = 6
Odd address bits are Read-Lock bit
locations and eve n address bits are
Write-Lock bit locations.
32 KByte (Type 3) BPSL = BPEL= (2m + 1) + 0FDH 0FDH= -3
64 KByte (Type 4) BPSL = 00H
BPEL = (2m + 1) + 0FCH 00H is Block-Protection Register bit 0
location; 0FCH = -4
32 KByte (Type 3) BPSL = BPEL= (2m + 1) + 0FEH 0FEH=-2
8 KByte (Type 2) Top BPSL = (2m + 1) + 07H
BPEL = (2m + 1) + 0EH 07H = 7; 0EH = 14
Odd address bits are Read-Lock bit
locations and eve n address bits are
Write-Lock bit locations.
2015 Microchip Technology Inc. DS20005119G-page 84
QUALITYMANAGEMENTS
YSTEM
CERTIFIEDBYDNV
== ISO/TS16949==
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defen d, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights.
Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
FlashFlex, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro,
PICSTART, PIC32 logo, rfPIC, SST, SST Logo, SuperFlash
and UNI/O are registered trademarks of Microchip T echnology
Incorporated in the U.S.A. and other countries.
FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor,
MTP, SEEVAL and The Embedded Control Solutions
Company are registered trademarks of Microchip Technology
Incorporated in the U.S.A.
Silicon Storage Technology is a registered trademark of
Microchip Technology Inc. in other countries.
Analog-for-the-Digital Age, Application Maestro, BodyCom,
chipKIT, chipKIT logo, CodeGuard, dsPIC DEM,
dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial
Programming, ICSP, Mindi, MiWi, MPASM, MPF, MPLAB
Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code
Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit,
PICtail, REAL ICE, rfLAB, Select Mode, SQI, Serial Quad I/O,
Total Endurance, TSHARC, UniWinDriver, WiperLock, ZENA
and Z-Scale are trademarks of Microchip Technology
Incorporated in the U.S.A. and other countries.
SQTP is a service mark of Microchip T echnology Incorporated
in the U.S.A.
GestIC and ULPP are registered trademarks of Microchip
Technology Germany II GmbH & Co. & KG, a subsidiary of
Microchip Technology Inc., in other countries.
All other trademarks mentioned herein are property of their
respective companies.
© 2015, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
ISBN: 978-1-63277-731-7
Note the following details of the code protection feature on Microchip devices:
• Microchip products meet the specification contained in their particular Microchip Data Sheet.
• Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
• There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Dat a
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
• Microchip is willing to work with th e customer who is concerned about the integrity of their code.
• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection featur es of our
products. Attempts to break Microchip’ s code protection feature may be a violation of the Digit al Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Microchip received ISO/TS-16949:200 9 certif ication for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design cent ers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperi pherals, nonvola tile memo ry and
analog product s. In addition, Microchip ’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
2015 Microchip Technology Inc. DS20005119G-page 85
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