Philips
Semiconductors
PCA9553
4-bit I2C LED driver with programmable
blink rates
Product data
Supersedes data of 2002 Dec 13 2003 May 02
INTEGRATED CIRCUITS
Philips Semiconductors Product data
PCA9553
4-bit I2C LED driver with
programmable blink rates
2
2003 May 02
FEATURES
•4 LED drivers (on, off, flashing at a programmable rate)
•2 selectable, fully programmable blink rates (frequency and duty
cycle) between 0.15625 and 40 Hz (6.4 and 0.025 seconds)
•Input/outputs not used as LED drivers can be used as regular
GPIOs
•Internal oscillator requires no external components
•I2C-businterface logic compatible with SMBus
•Internal power-on reset
•Noise filter on SCL/SDA inputs
•4 open drain outputs directly drive LEDs to 25 mA
•Controlled edge rates to minimize ground bounce
•No glitch on power-up
•Supports hot insertion
•Low stand-by current
•Operating power supply voltage range of 2.3 V to 5.5 V
•0 to 400 kHz clock frequency
•ESD protection exceeds 2000 V HBM per JESD22-A114,
150 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101
•Latch-up testing is done to JEDEC Standard JESD78 which
exceeds 100 mA
•Packages offered: SO8, TSSOP8
DESCRIPTION
The PCA9553 LED Blinker blinks LEDs in I@C and SMBus
applications where it is necessary to limit bus traffic or free up the
I2C Master’s (MCU, MPU, DSP, chipset, etc.) timer. The uniqueness
of this device is the internal oscillator with two programmable blink
rates. To blink LEDs using normal I/O Expanders like the PCF8574
or PCA9554, the bus master must send repeated commands to turn
the LED on and off. This greatly increases the amount of traffic on
the I2C-bus and uses up one of the master’s timers. The PCA9553
LED Blinker instead requires only the initial set-up command to
program BLINK RATE 1 and BLINK RATE 2 (i.e., the frequency and
duty cycle). From then on, only one command from the bus master
is required to turn each individual open drain output ON, OFF, or to
cycle at BLINK RATE 1 or BLINK RATE 2. Maximum output sink
current is 25 mA per bit and 100 mA per package.
Any bits not used for controlling the LEDs can be used for General
Purpose Parallel Input/Output (GPIO) expansion.
Power On Reset (POR) initializes the registers to their default state,
all zeroes, causing the bits to be set HIGH (LED off).
Due to pin limitations, the PCA9553 is not featured with hardware
address pins. The PCA9553/01 and the PCA9553/02 have different
fixed I2C-bus addresses allowing operation of both on the same bus.
PIN CONFIGURATION
1
2
3
45
6
7
8
LED0
LED1
LED2
VSS
VDD
SDA
SCL
LED3
SW01035
Figure 1. Pin configuration
PIN DESCRIPTION
PIN
NUMBER SYMBOL FUNCTION
1 LED0 LED driver 0
2 LED1 LED driver 1
3 LED2 LED driver 2
4 VSS Supply ground
5 LED3 LED driver 3
6 SCL Serial clock line
7 SDA Serial data line
8 VDD Supply voltage
ORDERING INFORMATION
PACKAGES TEMPERATURE RANGE ORDER CODE TOPSIDE MARK DRAWING NUMBER
8-Pin Plastic SO -40 to +85 °C PCA9553D/01 P9553/1 SOT96-1
8-Pin Plastic SO -40 to +85 °C PCA9553D/02 P9553/2 SOT96-1
8-Pin Plastic TSSOP -40 to +85 °C PCA9553DP/01 P53/1 SOT505-1
8-Pin Plastic TSSOP -40 to +85 °C PCA9553DP/02 P53/2 SOT505-1
Standard packing quantities and other packaging data is available at www.philipslogic.com/packaging.
I2C is a trademark of Philips Semiconductors Corporation.
Philips Semiconductors Product data
PCA95534-bit I2C LED driver with programmable blink rates
2003 May 02 3
BLOCK DIAGRAM
PWM0
REGISTER
PWM1
REGISTER
PRESCALER 0
REGISTER
PRESCALER 1
REGISTER
I2C-BUS
CONTROL
LEDx
INPUT
FILTERS
SCL
SDA
OSCILLATOR
POWER-ON
RESET
VDD
VSS
SW01036
1
0
BLINK0
BLINK1
NOTE: ONLY ONE I/O SHOWN FOR CLARITY
LED SELECT (LSx)
REGISTER
INPUT
REGISTER
PCA9553
Figure 2. Block diagram
Philips Semiconductors Product data
PCA95534-bit I2C LED driver with programmable blink rates
2003 May 02 4
DEVICE ADDRESSING
Following a START condition the bus master must output the
address of the slave it is accessing. The address of the PCA9553/01
is shown in Figure 3 and PCA9553/02 in Figure 4.
11 0 0010
SLAVE ADDRESS
SW01037
R/W
Figure 3. Slave address — PCA9553/01
11 0 0011
SLAVE ADDRESS
SW01038
R/W
Figure 4. Slave address — PCA9553/02
The last bit of the address byte defines the operation to be
performed. When set to logic 1 a read is selected, while a logic 0
selects a write operation.
CONTROL REGISTER
Following the successful acknowledgement of the slave address,
the bus master will send a byte to the PCA9553 which will be stored
in the Control Register.
0 0 AI B2 B1 B0 0
SW01034
0
AUTO-INCREMENT FLAG
REGISTER ADDRESS
RESET STATE: 00h
Figure 5. Control register
CONTROL REGISTER DEFINITION
B2 B1 B0 REGISTER
NAME TYPE REGISTER
FUNCTION
0 0 0 INPUT READ INPUT
REGISTER
0 0 1 PSC0 READ/
WRITE FREQUENCY
PRESCALER 0
0 1 0 PWM0 READ/
WRITE PWM REGISTER
0
0 1 1 PSC1 READ/
WRITE FREQUENCY
PRESCALER 1
1 0 0 PWM1 READ/
WRITE PWM
REGISTER 1
1 0 1 LS0 READ/
WRITE LED SELECTOR
REGISTER DESCRIPTION
The lowest 3 bits are used as a pointer to determine which register
will be accessed.
If the auto-increment flag is set, the three low order bits of the
Control Register are automatically incremented after a read or write.
This allows the user to program the registers sequentially. The
contents of these bits will rollover to ‘000’ after the last register is
accessed.
When auto-increment flag is set (AI = 1) and a read sequence is
initiated, the sequence must start by reading a register different from
‘0’ (B2 B1 B0 0 0 0 0)
Only the 3 least significant bits are affected by the AI flag.
Unused bits must be programmed with zeroes.
INPUT — INPUT REGISTER
bit 7 6 5 4 3 2 1 0
Default X X X X X X X X
The INPUT register reflects the state of the device pins. Writes to
this register will be acknowledged but will have no effect.
PSC0 — FREQUENCY PRESCALER 0
bit 7 6 5 4 3 2 1 0
default 1 1 1 1 1 1 1 1
PSC0 is used to program the period of the PWM output.
The period of BLINK0 +(PSC0 )1)
44
PWM0 — PWM REGISTER 0
bit 7 6 5 4 3 2 1 0
default 1 0 0 0 0 0 0 0
The PWM0 register determines the duty cycle of BLINK0. The
outputs are LOW (LED off) when the count is less than the value in
PWM0 and HIGH when it is greater. If PWM0 is programmed with
00h, then the PWM0 output is always LOW.
The duty cycle of BLINK0 is: 256 –PWM0
256
PSC1 — FREQUENCY PRESCALER 1
bit 7 6 5 4 3 2 1 0
default 1 1 1 1 1 1 1 1
PSC1 is used to program the period of PWM output.
The period of BLINK1 +(PSC1 )1)
44
PWM1 — PWM REGISTER 1
bit 7 6 5 4 3 2 1 0
default 1 0 0 0 0 0 0 0
The PWM1 register determines the duty cycle of BLINK1. The
outputs are LOW (LED off) when the count is less than the value in
PWM1 and HIGH when it is greater. If PWM1 is programmed with
00h, then the PWM1 output is always LOW.
The duty cycle of BLINK1 is: 256 –PWM1
256
LS0 — LED SELECTOR
LED3 LED2 LED 1 LED 0
bit 7 6 5 4 3 2 1 0
default 0 1 0 1 0 1 0 1
The LSx LED select registers determine the source of the LED data.
00 = Output is set LOW (LED on)
01 = Output is set Hi-Z (LED off - default)
10 = Output blinks at PWM0 rate
11 = Output blinks at PWM1 rate
Philips Semiconductors Product data
PCA95534-bit I2C LED driver with programmable blink rates
2003 May 02 5
POWER-ON RESET
When power is applied to VDD, an internal Power-On Reset holds
the PCA9553 in a reset state until VDD has reached VPOR. At this
point, the reset condition is released and the PCA9553 registers are
initialized to their default states, with all outputs in the off state.
CHARACTERISTICS OF THE I2C-BUS
The I2C-bus is for 2-way, 2-line communication between different ICs
or modules. The two lines are a serial data line (SDA) and a serial
clock line (SCL). Both lines must be connected to a positive supply
via a pull-up resistor when connected to the output stages of a device.
Data transfer may be initiated only when the bus is not busy.
Bit transfer
One data bit is transferred during each clock pulse. The data on the
SDA line must remain stable during the HIGH period of the clock
pulse as changes in the data line at this time will be interpreted as
control signals (see Figure 6).
SDA
SCL
SW00363
data line
stable;
data valid
change
of data
allowed
Figure 6. Bit transfer
Start and stop conditions
Both data and clock lines remain HIGH when the bus is not busy. A
HIGH-to-LOW transition of the data line, while the clock is HIGH is
defined as the start condition (S). A LOW-to-HIGH transition of the
data line while the clock is HIGH is defined as the stop condition (P)
(see Figure 7).
System configuration
A device generating a message is a transmitter: a device receiving
is the receiver. The device that controls the message is the master
and the devices which are controlled by the master are the slaves
(see Figure 8).
SDA
SCL
SW00365
S P
SDA
SCL
START condition STOP condition
Figure 7. Definition of start and stop conditions
MASTER
TRANSMITTER/
RECEIVER SLAVE
RECEIVER SLAVE
TRANSMITTER/
RECEIVER MASTER
TRANSMITTER
MASTER
TRANSMITTER/
RECEIVER
SDA
SCL
SW00366
I2C
MULTIPLEXER
SLAVE
Figure 8. System configuration
Philips Semiconductors Product data
PCA95534-bit I2C LED driver with programmable blink rates
2003 May 02 6
Acknowledge
The number of data bytes transferred between the start and the stop conditions from transmitter to receiver is not limited. Each byte of eight bits
is followed by one acknowledge bit. The acknowledge bit is a HIGH level put on the bus by the transmitter whereas the master generates an
extra acknowledge related clock pulse.
A slave receiver which is addressed must generate an acknowledge after the reception of each byte. Also a master must generate an
acknowledge after the reception of each byte that has been clocked out of the slave transmitter. The device that acknowledges has to pull down
the SDA line during the acknowledge clock pulse, so that the SDA line is stable LOW during the HIGH period of the acknowledge related clock
pulse, set-up and hold times must be taken into account.
A master receiver must signal an end of data to the transmitter by not generating an acknowledge on the last byte that has been clocked out of
the slave. In this event, the transmitter must leave the data line HIGH to enable the master to generate a stop condition.
DATA OUTPUT
BY TRANSMITTER
SCL FROM
MASTER
SW00368
DATA OUTPUT
BY RECEIVER
12 89
S
START condition
clock pulse for
acknowledgement
acknowledge
not acknowledge
Figure 9. Acknowledgement on the I2C-bus
Philips Semiconductors Product data
PCA95534-bit I2C LED driver with programmable blink rates
2003 May 02 7
Bus transactions
10
12
SCL
WRITE TO
REGISTER
DATA OUT
FROM PORT
345678
SDA S0A A A
11000 DATA 1
slave address data to register
start condition R/W acknowledge
from slave acknowledge
from slave acknowledge
from slave
tpv
DATA 1 VALID
SW02002
9
B00 0 0 AI 0 B2 B1
command byte
Figure 10. WRITE to register
0 1 00 0 1 01 10 00
1 1
S0
AAA
acknowledge
from slave
R/W
acknowledge
from slave
A
PNA
acknowledge
from slave acknowledge
from master
SDATA
DATA
R/W first byte
at this moment master-transmitter
becomes master-receiver and
slave-receiver becomes
slave-transmitter
last byte
SW02001
no acknowledge
from master
1
slave address
data from register
data from registerslave address
auto-increment
register address
if AI = 1
B00 0 0 AI 0 B2 B1
Figure 11. READ from register
110 00 10
READ FROM
PORT
DATA INTO
PORT
SDA S1A A
DATA 1 DATA 4
slave address data from port data from port
start condition R/W acknowledge
from slave acknowledge
from master stop
condition
tps
DATA 4DATA 2
P
DATA 3
tph
SW01097
no acknowledge
from master
NA
DATA 1
NOTES:
1. This figure assumes the command byte has previously been programmed with 00h.
2. PCA9553/01 shown. Figure 12. READ input port register
Philips Semiconductors Product data
PCA95534-bit I2C LED driver with programmable blink rates
2003 May 02 8
APPLICATION DATA
PCA9553
VSS
SDA
SCL
VDD
I2C/SMBus MASTER
SW01039
SDA
SCL
LED0
LED1
5 V
5 V
LED2
LED3
Figure 13. Typical application
Minimizing IDD when the I/O is used to control LEDs
When the I/Os are used to control LEDs, they are normally connected to VDD through a resistor as shown in Figure 13. Since the LED acts as a
diode, when the LED is off the I/O VIN is about 1.2 V less than VDD. The supply current, IDD, increases as VIN becomes lower than VDD and is
specified as ∆IDD in the DC characteristics table.
Designs needing to minimize current consumption, such as battery power applications, should consider maintaining the I/O pins greater than or
equal to VDD when the LED is off. Figure 14 shows a high value resistor in parallel with the LED. Figure 15 shows VDD less than the LED supply
voltage by at least 1.2 V. Both of these methods maintain the I/O VIN at or above VDD and prevents additional supply current consumption when
the LED is off.
VDD
VDD
LEDx
LED 100 kΩ
SW02086
Figure 14. High value resistor in parallel with the LED
VDD
3.3 V
LEDx
LED
SW02087
5 V
Figure 15. Device supplied by a lower voltage
Philips Semiconductors Product data
PCA95534-bit I2C LED driver with programmable blink rates
2003 May 02 9
Programming example
The following example will show how to set LED0 and LED1 off. It
will then set LED2 to blink at 1 Hz, 50% duty cycle. LED3 will be set
to blink at 4 Hz, 25% duty cycle. PCA9553/01 is used in this
example.
Table 1.
I2C-bus
Start S
PCA9553 address C4h
PSC0 subaddress + auto-increment 11h
Set prescaler PSC0 to achieve a period of 1 second:
Blink period +1+PSC0 )1
44
PSC0 = 37
25h
Set PWM0 duty cycle to 50%:
256 –PWM0
256 +0.5
PWM0 = 128
80h
Set prescaler PWM1 to achieve a period of 0.25
seconds:Blink period +0.25 +PSC1 )1
44
PSC1 = 9
09h
Set PWM1 output duty cycle to 25%:
256 –PWM1
256 +0.25
PWM1 = 192
C0h
Set LED0 on, LED1 off, LED2 set to blink at PSC0,
PWM0, LED3 set to blink at PCS1, PWM1 E4h
Stop P
Philips Semiconductors Product data
PCA95534-bit I2C LED driver with programmable blink rates
2003 May 02 10
ABSOLUTE MAXIMUM RATINGS
In accordance with the Absolute Maximum Rating System (IEC 134)
SYMBOL PARAMETER CONDITIONS MIN MAX UNIT
VDD Supply voltage -0.5 6.0 V
VI/O DC voltage on an I/O VSS - 0.5 5.5 V
II/O DC output current on an I/O —±25 mA
ISS Supply current —100 mA
Ptot Total power dissipation —400 mW
Tstg Storage temperature range -65 +150 °C
Tamb Operating ambient temperature -40 +85 °C
HANDLING
Inputs and outputs are protected against electrostatic discharge in normal handling. However, to be totally safe, it is desirable to take
precautions appropriate to handling MOS devices. Advice can be found in Data Handbook IC24 under ”Handling MOS devices”.
DC CHARACTERISTICS
VDD = 2.3 to 5.5 V; VSS = 0 V; Tamb = -40 to +85 °C; unless otherwise specified. TYP at 3.3 V and 25 °C.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNIT
Supplies
VDD Supply voltage 2.3 —5.5 V
IDD Supply current Operating mode; VDD = 5.5 V; no load;
VI = VDD or VSS; fSCL = 100 kHz —350 500 µA
Istb Standby current Standby mode; VDD = 5.5 V; no load;
VI = VDD or VSS; fSCL = 100 kHz —1.9 3.0 µA
∆IDD Additional standby current Standby mode; VDD = 5.5 V; Every
LED I/O at VIN = 4.3 V; fSCL = 0 kHz — — 325 µA
VPOR Power-on reset voltage No load; VI = VDD or VSS —1.7 2.2 V
Input SCL; input/output SDA
VIL LOW-level input voltage -0.5 —0.3 VDD V
VIH HIGH-level input voltage 0.7 VDD —5.5 V
IOL LOW-level output current VOL = 0.4V 3 6.5 —mA
ILLeakage current VI = VDD = VSS -1 —+1 µA
CIInput capacitance VI = VSS —3.7 5 pF
I/Os
VIL LOW-level input voltage -0.5 —0.8 V
VIH HIGH-level input voltage 2.0 —5.5 V
VOL = 0.4 V; VDD = 2.3 V; Note 1 9— — mA
VOL = 0.4 V; VDD = 3.0 V; Note 1 12 — — mA
VOL = 0.4 V; VDD = 4.5 V; Note 1 15 — — mA
IOL LOW-level output current VOL = 0.7 V; VDD = 2.3 V; Note 1 15 — — mA
VOL = 0.7 V; VDD = 3.0 V; Note 1 20 — — mA
VOL = 0.7 V; VDD = 4.5 V; Note 1 25 — — mA
ILInput leakage current VDD = 3.6 V; VI = 0 or VDD -1 —1µA
CIO Input/output capacitance —2.1 5 pF
NOTES:
1. Each I/O must be externally limited to a maximum of 25 mA and the device must be limited to a maximum current of 100 mA.
Philips Semiconductors Product data
PCA95534-bit I2C LED driver with programmable blink rates
2003 May 02 11
AC SPECIFICATIONS
SYMBOL PARAMETER STANDARD MODE
I2C BUS FAST MODE
I2C BUS UNITSSYMBOL PARAMETER MIN MAX MIN MAX UNITS
fSCL Operating frequency 0 100 0 400 kHz
tBUF Bus free time between STOP and START conditions 4.7 —1.3 —µs
tHD;STA Hold time after (repeated) START condition 4.0 —0.6 —µs
tSU;STA Repeated START condition set-up time 4.7 —0.6 —µs
tSU;STO Set-up time for STOP condition 4.0 —0.6 —µs
tHD;DAT Data in hold time 0—0—ns
tVD;ACK Valid time for ACK condition2—600 —600 ns
tVD;DAT (L) Data out valid time3—600 —600 ns
tVD;DAT (H) Data out valid time3—1500 —600 ns
tSU;DAT Data set-up time 250 —100 —ns
tLOW Clock LOW period 4.7 —1.3 —µs
tHIGH Clock HIGH period 4.0 —0.6 —µs
tFClock/Data fall time —300 20 + 0.1 Cb1300 ns
tRClock/Data rise time —1000 20 + 0.1 Cb1300 ns
tSP Pulse width of spikes that must be suppressed by the
input filters —50 —50 ns
Port Timing
tPV Output data valid —200 —200 ns
tPS Input data set-up time 100 —100 —ns
tPH Input data hold time 1—1—µs
NOTES:
1. Cb = total capacitance of one bus line in pF.
2. tVD;ACK = time for Acknowledgement signal from SCL LOW to SDA (out) LOW.
3. tVD;DAT = minimum time for SDA data out to be valid following SCL LOW.
Philips Semiconductors Product data
PCA95534-bit I2C LED driver with programmable blink rates
2003 May 02 12
+10%
0%
-10%
-20%
-30%
-40%
PERCENT
VARIATION
TEMPERATURE
(°C)
-40
+20%
0 +25 +70 +85
MAX
AVG
MIN
SW01085
Figure 16. Typical frequency variation over process at VDD = 2.3 V to 3.0 V
+10%
0%
-10%
-20%
-30%
-40%
PERCENT
VARIATION
TEMPERATURE
(°C)
-40
+20%
0 +25 +70 +85
MAX
AVG
MIN
SW01086
Figure 17. Typical frequency variation over process at VDD = 3.0 V to 5.5 V
Philips Semiconductors Product data
PCA95534-bit I2C LED driver with programmable blink rates
2003 May 02 13
tSP
tBUF
tHD;STA
PP S
tLOW tR
tHD;DAT
tF
tHIGH tSU;DAT
tSU;STA
Sr
tHD;STA
tSU;STO
SDA
SCL
SU00645
Figure 18. Definition of timing
Philips Semiconductors Product data
PCA95534-bit I2C LED driver with programmable blink rates
2003 May 02 14
SO8: plastic small outline package; 8 leads; body width 3.9 mm SOT96-1
Philips Semiconductors Product data
PCA95534-bit I2C LED driver with programmable blink rates
2003 May 02 15
TSSOP8: plastic thin shrink small outline package; 8 leads; body width 3 mm SOT505-1
Philips Semiconductors Product data
PCA95534-bit I2C LED driver with programmable blink rates
2003 May 02 16
REVISION HISTORY
Rev Date Description
_2 20030502 Product data (9397 750 11464); ECN 853-2397 29856 Dated 24 April2003.
Supersedes data of 2002 Dec 13 (9397 750 10859).
Modifications:
•Correction to voltage in typical application drawing
•Update maximum current per bit and per device
•Adjust maximum and minimum curves to ±15% on frequency variation graphs.
_1 20021213 Product data (9397 750 10859); ECN 853-2397 29264 of 09 December 2002.
Philips Semiconductors Product data
PCA95534-bit I2C LED driver with programmable blink rates
2003 May 02 17
Purchase of Philips I2C components conveys a license under the Philips’ I2C patent
to use the components in the I2C system provided the system conforms to the
I2C specifications defined by Philips. This specification can be ordered using the
code 9398 393 40011.
Definitions
Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see
the relevant data sheet or data handbook.
Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting
values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given
in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no
representation or warranty that such applications will be suitable for the specified use without further testing or modification.
Disclaimers
Life support — These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be
expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree
to fully indemnify Philips Semiconductors for any damages resulting from such application.
Right to make changes — Philips Semiconductors reserves the right to make changes in the products—including circuits, standard cells, and/or software—described
or contained herein in order to improve design and/or performance. When the product is in full production (status ‘Production’), relevant changes will be communicated
via a Customer Product/Process Change Notification (CPCN). Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys
no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent,
copyright, or mask work right infringement, unless otherwise specified.
Contact information
For additional information please visit
http://www.semiconductors.philips.com. Fax: +31 40 27 24825
For sales offices addresses send e-mail to:
sales.addresses@www.semiconductors.philips.com.
Koninklijke Philips Electronics N.V. 2003
All rights reserved. Printed in U.S.A.
Date of release: 05-03
Document order number: 9397 750 11464
Philips
Semiconductors
Data sheet status[1]
Objective data
Preliminary data
Product data
Product
status[2] [3]
Development
Qualification
Production
Definitions
This data sheet contains data from the objective specification for product development.
Philips Semiconductors reserves the right to change the specification in any manner without notice.
This data sheet contains data from the preliminary specification. Supplementary data will be published
at a later date. Philips Semiconductors reserves the right to change the specification without notice, in
order to improve the design and supply the best possible product.
This data sheet contains data from the product specification. Philips Semiconductors reserves the
right to make changes at any time in order to improve the design, manufacturing and supply. Relevant
changes will be communicated via a Customer Product/Process Change Notification (CPCN).
Data sheet status
[1] Please consult the most recently issued data sheet before initiating or completing a design.
[2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL
http://www.semiconductors.philips.com.
[3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.
Level
I
II
III
