M381L6423CTL-CB3 - Samsung Electronics

184pin Unbuffered DDR SDRAM MODULE

M381L6423CTL

Rev. 0.3 May. 2002

512MB DDR SDRAM MODULE

Unbuffered 184pin DIMM

(64Mx72(32Mx72*2 bank) based on 32Mx8 DDR SDRAM)

72-bit ECC/Parity

Revision 0.3

May. 2002

184pin Unbuffered DDR SDRAM MODULE

M381L6423CTL

Rev. 0.3 May. 2002

Revision History

Revision 0 (Oct. 2001)

1. First release for internal usage

Revision 0.1 (Dec. 2001)

Revised "Absolute maximum rating" table in page 38.

. Changed "Voltage on VDDQ supply relative to VSS" value from -0.5~3.6V to -1~3.6V

. Changed "power dissipation" value from 1.0W to 1.5W.

- Revised AC parameter table

- Deleted typical current in IDD spec. table

- Included address and control input setup/hold time(tIS/tIH) at slow slew rate in DDR200/266 AC specification

- Deleted Exit self refresh to write command(tXSW) in DDR200/266 AC specification

- Rename tXSA(exit self refresh to bank active command) to tXSNR(exit self refresh to non read command) at DDR200/266

- Rename tXSR(exit self refresh to read command) to tXSRD at DDR200/266

- Rename tWPREH(DQS in hold time) to tWPRE at DDR200/266

- Rename tREF(Refresh interval time) to tREFI at DDR200/266

- Changed tWR value from 2tCK to 15ns.

- Added tDAL(tWR+tRP)

--Rename tCDLR(Write data out to Read command) t0 tWTR

Revision 0.2 (Jan. 2002)

1. Added tRAP(Active to Read w/ autoprecharge command)

Revision 0.3 (May. 2002)

1. Change pin location of A13 from pin 103 to pin 167

From To

DDR266A DDR266B DDR200 DDR266A DDR266B DDR200

Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.

tHZ tACmin

-400ps tACmax

-400ps tACmin

-400ps tACmax

-400ps tACmin

-400ps tACmax

-400ps -0.75 +0.75 -0.75 +0.75 -0.8 +0.8

tLZ tACmin

-400ps tACmax

-400ps tACmin

-400ps tACmax

-400ps tACmin

-400ps tACmax

-400ps -0.75 +0.75 -0.75 +0.75 -0.8 +0.8

tWPST

(tCK) 0.25 0.25 0.25 0.4 0.6 0.4 0.6 0.4 0.6

tPDEX 10ns 10ns 10ns 7.5ns 7.5ns 10ns

184pin Unbuffered DDR SDRAM MODULE

M381L6423CTL

Rev. 0.3 May. 2002

The Samsung M381L6423CTL is 64M bit x 72 Double Data

Rate SDRAM high density memory modules. The Samsung

M381L6423CTL consists of eighteen CMOS 32M x 8 bit with

4banks Double Data Rate SDRAMs in 66pin TSOP-II(400mil)

packages mounted on a 184pin glass-epoxy substrate. Four

0.1uF decoupling capacitors are mounted on the printed circuit

board in parallel for each DDR SDRAM. The M381L6423CTL

is Dual In-line Memory Modules and intended for mounting into

184pin edge connector sockets.

Synchronous design allows precise cycle control with the use

of system clock. Data I/O transactions are possible on both

edges of DQS. Range of operating frequencies, programmable

latencies and burst lengths allow the same device to be useful

for a variety of high bandwidth, high performance memory sys-

tem applications.

GENERAL DESCRIPTION

PIN DESCRIPTION

* These pins are not used in this module.

Pin Name Function

A0 ~ A12Address input (Multiplexed)

BA0 ~ BA1 Bank Select Address

DQ0 ~ DQ63 Data input/output

CB0 ~ CB7 Check bit(Data-in/data-out)

DQS0 ~ DQS8 Data Strobe input/output

CK0,CK0 ~ CK2, CK2 Clock input

CKE0,CKE1 Clock enable input

CS0, CS1 Chip select input

RAS Row address strobe

CAS Column address strobe

WE Write enable

DM0 ~ DM8 Data - in mask

VDD Power supply (2.5V)

VDDQ Power Supply for DQS(2.5V)

VSS Ground

VREF Power supply for reference

VDDSPD Serial EEPROM Power

Supply (2.3V to 3.6V)

SDA Serial data I/O

SCL Serial clock

SA0 ~ 2 Address in EEPROM

VDDID VDD identification flag

NC No connection

PIN CONFIGURATIONS (Front side/back side)

Pin Front Pin Front Pin Front Pin Back Pin Back Pin Back

VREF

DQ0

VSS

DQ1

DQS0

DQ2

VDD

DQ3

VSS

DQ8

DQ9

DQS1

VDDQ

CK1

/CK1

VSS

DQ10

DQ11

CKE0

VDDQ

DQ16

DQ17

DQS2

VSS

DQ18

VDDQ

DQ19

DQ24

VSS

DQ25

DQS3

VDD

DQ26

DQ27

VSS

CB0

CB1

VDD

DQS8

CB2

VSS

CB3

BA1

DQ32

VDDQ

DQ33

DQS4

DQ34

VSS

BA0

DQ35

DQ40

VDDQ

/WE

DQ41

/CAS

VSS

DQS5

DQ42

DQ43

VDD

*/CS2

DQ48

DQ49

VSS

/CK2

CK2

VDDQ

DQS6

DQ50

DQ51

VSS

VDDID

DQ56

DQ57

VDD

DQS7

DQ58

DQ59

VSS

SDA

SCL

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

VSS

DQ4

DQ5

VDDQ

DM0

DQ6

DQ7

VSS

VDDQ

DQ12

DQ13

DM1

VDD

DQ14

DQ15

CKE1

VDDQ

*BA2

DQ20

A12

VSS

DQ21

A11

DM2

VDD

DQ22

DQ23

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

VSS

DQ28

DQ29

VDDQ

DM3

DQ30

VSS

DQ31

CB4

CB5

VDDQ

CK0

/CK0

VSS

DM8

A10

CB6

VDDQ

CB7

VSS

DQ36

DQ37

VDD

DM4

DQ38

DQ39

VSS

DQ44

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

/RAS

DQ45

VDDQ

/CS0

/CS1

DM5

VSS

DQ46

DQ47

*/CS3

VDDQ

DQ52

DQ53

*A13

VDD

DM6

DQ54

DQ55

VDDQ

DQ60

DQ61

VSS

DM7

DQ62

DQ63

VDDQ

SA0

SA1

SA2

VDDSPD

SAMSUNG ELECTRONICS CO., Ltd. reserves the right to change products and specifications without notice.

KEYKEY

M381L6423CTL DDR SDRAM 184pin DIMM

64Mx72 DDR SDRAM 184pin DIMM based on 32Mx8

FEATURE

• Performance range

• Power supply : Vdd: 2.5V ± 0.2V, Vddq: 2.5V ± 0.2V

• Double-data-rate architecture; two data transfers per clock cycle

• Bidirectional data strobe(DQS)

• Differential clock inputs(CK and CK)

• DLL aligns DQ and DQS transition with CK transition

• Programmable Read latency 2, 2.5 (clock)

• Programmable Burst length (2, 4, 8)

• Programmable Burst type (sequential & interleave)

• Edge aligned data output, center aligned data input

• Auto & Self refresh, 7.8us refresh interval(8K/64ms refresh)

• Serial presence detect with EEPROM

• PCB : Height 1250 mil, double sided component

Part No. Max Freq. Interface

M381L6423CTL-C(L)B3 167MHz(6.0ns@CL=2.5)

SSTL_2M381L6423CTL-C(L)A2 133MHz(7.5ns@CL=2)

M381L6423CTL-C(L)B0 133MHz(7.5ns@CL=2.5)

184pin Unbuffered DDR SDRAM MODULE

M381L6423CTL

Rev. 0.3 May. 2002

Functional Block Diagram

DQ4

DQ5

DQ6

DQ7

DQ0

DQ1

DQ2

DQ3

I/O 7

I/O 6

I/O 1

I/O 0

DM0

I/O 5

I/O 4

I/O 3

I/O 2

I/O 0

I/O 1

I/O 6

I/O 7

I/O 2

I/O 3

I/O 4

I/O 5

DQ12

DQ13

DQ14

DQ8

DQ9

DQ10

DQ11

I/O 7

I/O 6

I/O 1

I/O 0

D10

I/O 5

I/O 4

I/O 3

I/O 0

I/O 1

I/O 6

I/O 7

I/O 2

I/O 3

I/O 4

DM1

DQ20

DQ21

DQ22

DQ23

DQ16

DQ17

DQ18

DQ19

I/O 7

I/O 6

I/O 1

I/O 0

D11

I/O 5

I/O 4

I/O 3

I/O 2

I/O 0

I/O 1

I/O 6

I/O 7

I/O 2

I/O 3

I/O 4

I/O 5

DM2

DQ28

DQ29

DQ30

DQ31

DQ24

DQ25

DQ26

DQ27

I/O 7

I/O 6

I/O 1

I/O 0

D12

I/O 5

I/O 4

I/O 3

I/O 2

I/O 0

I/O 1

I/O 6

I/O 7

I/O 2

I/O 3

I/O 4

I/O 5

DM3

DQ36

DQ37

DQ38

DQ39

DQ32

DQ33

DQ34

DQ35

I/O 7

I/O 6

I/O 1

I/O 0

DM4

D13

I/O 5

I/O 4

I/O 3

I/O 2

I/O 0

I/O 1

I/O 6

I/O 7

I/O 2

I/O 3

I/O 4

I/O 5

DQ44

DQ45

DQ46

DQ47

DQ40

DQ41

DQ42

DQ43

I/O 7

I/O 6

I/O 1

I/O 0

D14

I/O 5

I/O 4

I/O 3

I/O 2

I/O 0

I/O 1

I/O 6

I/O 7

I/O 2

I/O 3

I/O 4

I/O 5

DM5

DQ52

DQ53

DQ54

DQ55

DQ48

DQ49

DQ50

DQ51

I/O 7

I/O 6

I/O 1

I/O 0

D15

I/O 5

I/O 4

I/O 3

I/O 2

I/O 0

I/O 1

I/O 6

I/O 7

I/O 2

I/O 3

I/O 4

I/O 5

DQ60

DQ61

DQ62

DQ63

DQ56

DQ57

DQ58

DQ59

I/O 7

I/O 6

I/O 1

I/O 0

D16

I/O 5

I/O 4

I/O 3

I/O 2

I/O 0

I/O 1

I/O 6

I/O 7

I/O 2

I/O 3

I/O 4

I/O 5

DM7

A0 - A13 A0-A13: SDRAMs D0 - D17

RAS RAS: SDRAMs D0 - D17

CAS CAS: SDRAMs D0 - D17

CKE0 CKE: SDRAMs D0 - D8

WE WE: SDRAMs D0 - D17

CS0CS1

CS CS CS CS

CS CS

CKE1 CKE: SDRAMs D9 - D17

BA0 - BA1 BA0-BA1: SDRAMs D0 - D17

DQS0

DQS

DQS4

DQS1 DQS5

DQS DQS

DQS2

DQS DQS

DQS3

DQS DQS

DM6

DQS6

DQS7

DQ15 I/O 2 I/O 5

CB4

CB5

CB6

CB7

CB0

CB1

CB2

CB3

I/O 7

I/O 6

I/O 1

I/O 0

D17

I/O 5

I/O 4

I/O 3

I/O 2

I/O 0

I/O 1

I/O 6

I/O 7

I/O 2

I/O 3

I/O 4

I/O 5

CS CS

DQS8

DM8

DQS DQS

DQS

DQSDQS

DQS

DQS DQS DQS

Notes:

1. DQ-to-I/O wiring is shown as recom-

mended but may be changed.

2. DQ/DQS/DM/CKE/S relationships must

be maintained as shown.

3. DQ, DQS, DM resistors: 22 Ohms.

* Clock Wiring

CK0/CK0

Clock

Input SDRAMs

CK1/CK1 6 SDRAMs

6 SDRAMs

CK2/CK2

*Clock Net Wiring

Card

Edge

Dram1

Dram2

Dram3

Dram4

Dram5

Dram6

R=120Ω

Serial PD

A1 A2

SA0 SA1 SA2

SCL SDA

VSS

D0 - D17

VDD/VDDQ D0 - D17

D0 - D17

VREF

VDDSPD SPD

184pin Unbuffered DDR SDRAM MODULE

M381L6423CTL

Rev. 0.3 May. 2002

Note : Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded.

Functional operation should be restricted to recommended operating condition.

Exposure to higher than recommended voltage for extended periods of time could affect device reliability.

POWER & DC OPERATING CONDITIONS (SSTL_2 In/Out)

Notes 1. Includes ± 25mV margin for DC offset on VREF, and a combined total of ± 50mV margin for all AC noise and DC offset on VREF,

bandwidth limited to 20MHz. The DRAM must accommodate DRAM current spikes on VREF and internal DRAM noise coupled

TO VREF, both of which may result in VREF noise. VREF should be de-coupled with an inductance of ≤ 3nH.

2.VTT is not applied directly to the device. VTT is a system supply for signal termination resistors, is expected to be set equal to

VREF, and must track variations in the DC level of VREF

3. VID is the magnitude of the difference between the input level on CK and the input level on CK.

4. These parameters should be tested at the pin on actual components and may be checked at either the pin or the pad in

simulation. The AC and DC input specifications are relative to a VREF envelop that has been bandwidth limited to 200MHZ.

5. The value of VIX is expected to equal 0.5*VDDQ of the transmitting device and must track variations in the dc level of the same.

6. These charactericteristics obey the SSTL-2 class II standards.

Recommended operating conditions(Voltage referenced to VSS=0V, TA=0 to 70°C)

Parameter Symbol Min Max Unit Note

Supply voltage(for device with a nominal VDD of 2.5V) VDD 2.3 2.7

I/O Supply voltage VDDQ 2.3 2.7 V

I/O Reference voltage VREF VDDQ/2-50mV VDDQ/2+50mV V1

I/O Termination voltage(system) VTT VREF-0.04 VREF+0.04 V2

Input logic high voltage VIH(DC) VREF+0.15 VDDQ+0.3 V4

Input logic low voltage VIL(DC) -0.3 VREF-0.15 V4

Input Voltage Level, CK and CK inputs VIN(DC) -0.3 VDDQ+0.3 V

Input Differential Voltage, CK and CK inputs VID(DC) 0.3 VDDQ+0.6 V3

Input crossing point voltage, CK and CK inputs VIX(DC) 1.15 1.35 V5

Input leakage current II-2 2uA

Output leakage current IOZ -5 5uA

Output High Current(Normal strengh driver)

;VOUT = VTT + 0.84V IOH -16.8 mA

Output High Current(Normal strengh driver)

;VOUT = VTT - 0.84V IOL 16.8 mA

Output High Current(Half strengh driver)

;VOUT = VTT + 0.45V IOH -9 mA

Output High Current(Half strengh driver)

;VOUT = VTT - 0.45V IOL 9mA

Parameter Symbol Value Unit

Voltage on any pin relative to VSS VIN, VOUT -0.5 ~ 3.6 V

Voltage on VDD & VDDQ supply relative to VSS VDD, VDDQ -1.0 ~ 3.6 V

Storage temperature TSTG -55 ~ +150 °C

Power dissipation PD27 W

Short circuit current IOS 50 mA

Absolute Maximum Rate

184pin Unbuffered DDR SDRAM MODULE

M381L6423CTL

Rev. 0.3 May. 2002

DDR SDRAM IDD spec table

* Module IDD was calculated on the basis of component IDD and can be differently measured according to DQ loading cap.

Symbol B3(DDR333@CL=2.5) A2(DDR266@CL=2) B0(DDR266@CL=2.5) Unit Notes

IDD0 1575 1305 1305 mA

IDD1 1800 1530 1530 mA

IDD2P 54 54 54 mA

IDD2F 540 486 486 mA

IDD2Q 360 324 324 mA

IDD3P 720 576 576 mA

IDD3N 1080 900 900 mA

IDD4R 2205 1845 1845 mA

IDD4W 2115 1755 1755 mA

IDD5 2295 2070 2070 mA

IDD6 Normal 54 54 54 mA

Low power 27 27 27 mA Optional

IDD7A 3690 3015 3015 mA

AC OPERATING CONDITIONS

Parameter/Condition Symbol Min Max Unit Note

Input High (Logic 1) Voltage, DQ, DQS and DM signals VIH(AC) VREF + 0.31 V3

Input Low (Logic 0) Voltage, DQ, DQS and DM signals. VIL(AC) VREF - 0.31 V3

Input Differential Voltage, CK and CK inputs VID(AC) 0.7 VDDQ+0.6 V1

Input Crossing Point Voltage, CK and CK inputs VIX(AC) 0.5*VDDQ-0.2 0.5*VDDQ+0.2 V2

Note 1. VID is the magnitude of the difference between the input level on CK and the input on CK.

2. The value of VIX is expected to equal 0.5*VDDQ of the transmitting device and must track variations in the DC level of the same.

3. These parameters should be tested at the pim on actual components and may be checked at either the pin or the pad in simula-

tion. the AC and DC input specificatims are refation to a Vref envelope that has been bandwidth limited 20MHz.

AC OPERATING TEST CONDITIONS (VDD=2.5V, VDDQ=2.5V, TA= 0 to 70°C)

Parameter Value Unit Note

Input reference voltage for Clock 0.5 * VDDQ V

Input signal maximum peak swing 1.5 V

Input Levels(VIH/VIL) VREF+0.31/VREF-0.31 V

Input timing measurement reference level VREF V

Output timing measurement reference level Vtt V

Output load condition See Load Circuit

184pin Unbuffered DDR SDRAM MODULE

M381L6423CTL

Rev. 0.3 May. 2002

Input/Output CAPACITANCE (VDD=2.5V, VDDQ=2.5V, TA= 25°C, f=1MHz)

Parameter Symbol Min Max Unit

Input capacitance(A0 ~ A12, BA0 ~ BA1,RAS,CAS, WE ) CIN1 69 87 pF

Input capacitance(CKE0,CKE1)CIN2 44 53 pF

Input capacitance( CS0, CS1)CIN3 44 53 pF

Input capacitance( CLK0, CLK1, CLK2)CIN4 27 34 pF

Input capacitance(DM0~DM8)CIN5 6 8 pF

Data & DQS input/output capacitance(DQ0~DQ63)COUT16 8 pF

Data input/output capacitance(CB0~CB7)COUT2 6 8 pF

Output Load Circuit (SSTL_2)

Output Z0=50Ω

CLOAD=30pF

VREF

=0.5*VDDQ

RT=50Ω

Vtt=0.5*VDDQ

184pin Unbuffered DDR SDRAM MODULE

M381L6423CTL

Rev. 0.3 May. 2002

AC Timming Parameters & Specifications (These AC charicteristics were tested on the Component)

Parameter Symbol -TCB3

(DDR333) -TCA2

(DDR266A) -TCB0

(DDR266B) Unit Note

Min Max Min Max Min Max

Row cycle time tRC 60 65 65 ns

Refresh row cycle time tRFC 72 75 75 ns

Row active time tRAS 42 70K 45 120K 45 120K ns

RAS to CAS delay tRCD 18 20 20 ns

Row precharge time tRP 18 20 20 ns

Row active to Row active delay tRRD 12 15 15 ns

Write recovery time tWR 15 15 15 ns

Last data in to Read command tWTR 111tCK

Col. address to Col. address delay tCCD 111tCK

Clock cycle time CL=2.0 tCK 7.5 12 7.5 12 10 12 ns 5

CL=2.5 6 12 7.5 12 7.5 12 ns 5

Clock high level width tCH 0.45 0.55 0.45 0.55 0.45 0.55 tCK

Clock low level width tCL 0.45 0.55 0.45 0.55 0.45 0.55 tCK

DQS-out access time from CK/CK tDQSCK -0.6 +0.6 -0.75 +0.75 -0.75 +0.75 ns

Output data access time from CK/CK tAC -0.7 +0.7 -0.75 +0.75 -0.75 +0.75 ns

Data strobe edge to ouput data edge tDQSQ -0.45 -0.5 -0.5 ns 5

Read Preamble tRPRE 0.9 1.1 0.9 1.1 0.9 1.1 tCK

Read Postamble tRPST 0.4 0.6 0.4 0.6 0.4 0.6 tCK

CK to valid DQS-in tDQSS 0.75 1.25 0.75 1.25 0.75 1.25 tCK

DQS-in setup time tWPRES 000ns 2

DQS-in hold time tWPRE 0.25 0.25 0.25 tCK

DQS falling edge to CK rising-setup time tDSS 0.2 0.2 0.2 tCK

DQS falling edge from CK rising-hold time tDSH 0.2 0.2 0.2 tCK

DQS-in high level width tDQSH 0.35 0.35 0.35 tCK

DQS-in low level width tDQSL 0.35 0.35 0.35 tCK

DQS-in cycle time tDSC 0.9 1.1 0.9 1.1 0.9 1.1 tCK

Address and Control Input setup time(fast) tIS 0.75 0.9 0.9 ns 6

Address and Control Input hold time(fast) tIH 0.75 0.9 0.9 ns 6

Address and Control Input setup time(slow) tIS 0.8 1.0 1.0 ns 6

Address and Control Input hold time(slow) tIH 0.8 1.0 1.0 ns 6

Data-out high impedence time from CK/CK tHZ -0.7 +0.7 -0.75 +0.75 -0.75 +0.75 ns

Data-out low impedence time from CK/CK tLZ -0.7 +0.7 -0.75 +0.75 -0.75 +0.75 ns

Input Slew Rate(for input only pins) tSL(I) 0.5 0.5 0.5 V/ns 6

Input Slew Rate(for I/O pins) tSL(IO) 0.5 0.5 0.5 V/ns 7

Output Slew Rate(x4,x8) tSL(O) 1.0 4.5 1.0 4.5 1.0 4.5 V/ns 10

Output Slew Rate Matching Ratio(rise to fall) tSLMR 0.67 1.5 0.67 1.5 0.67 1.5

184pin Unbuffered DDR SDRAM MODULE

M381L6423CTL

Rev. 0.3 May. 2002

1. Maximum burst refresh cycle : 8

2. The specific requirement is that DQS be valid(High or Low) on or before this CK edge. The case shown(DQS going from

High_Z to logic Low) applies when no writes were previously in progress on the bus. If a previous write was in progress,

DQS could be High at this time, depending on tDQSS.

3. The maximum limit for this parameter is not a device limit. The device will operate with a great value for this parameter,

but system performance (bus turnaround) will degrade accordingly.

4. A write command can be applied with tRCD satisfied after this command.

5. For registered DIMMs, tCL and tCH are ≥ 45% of the period including both the half period jitter (tJIT(HP)) of the PLL and the half period

jitter due to crosstalk (tJIT(crosstalk) ) on the DIMM.

6. Input Setup/Hold Slew Rate Derating

This derating table is used to increase tIS/tIH in the case where the input slew rate is below 0.5V/ns. Input setup/hold slew rate

based on the lesser of AC-AC slew rate and DC-DC slew rate.

7. I/O Setup/Hold Slew Rate Derating

This derating table is used to increase tDS/tDH in the case where the I/O slew rate is below 0.5V/ns. I/O setup/hold slew rate

based on the lesser of AC-AC slew rate and DC-DC slew rate.

Parameter Symbol -TCB3

(DDR333) -TCA2

(DDR266A) -TCB0

(DDR266B) Unit Note

Min Max Min Max Min Max

Mode register set cycle time tMRD 12 15 15 ns

DQ & DM setup time to DQS tDS 0.45 0.5 0.5 ns 7,8,9

DQ & DM hold time to DQS tDH 0.45 0.5 0.5 ns 7,8,9

Control & Address input pulse width tIPW 2.2 2.2 2.2 ns

DQ & DM input pulse width tDIPW 1.75 1.75 1.75 ns

Power down exit time tPDEX 67.5 7.5 ns

Exit self refresh to non-Read command tXSNR 75 75 75 ns 4

Exit self refresh to read command tXSRD 200 200 200 tCK

Refresh interval time tREFI 7.8 7.8 7.8 us 1

Output DQS valid window tQH tHP

-tQHS -tHP

-tQHS -ns 5

Clock half period tHP tCLmin

or tCHmin -tCLmin

or tCHmin -ns

Data hold skew factor tQHS 0.55 0.75 0.75 ns

DQS write postamble time tWPST 0.4 0.6 0.4 0.6 0.4 0.6 tCK 3

Active to Read with Auto precharge

command tRAP 20 20 20

Autoprecharge write recovery +

Precharge time tDAL (tWR/tCK)

(tRP/tCK)

(tWR/tCK)

(tRP/tCK)

(tWR/tCK)

(tRP/tCK) tCK 11

Input Setup/Hold Slew Rate ∆tIS ∆tIH

(V/ns) (ps) (ps)

0.5 0 0

0.4 +50 +50

0.3 +100 +100

I/O Setup/Hold Slew Rate ∆tDS ∆tDH

(V/ns) (ps) (ps)

0.5 0 0

0.4 +75 +75

0.3 +150 +150

184pin Unbuffered DDR SDRAM MODULE

M381L6423CTL

Rev. 0.3 May. 2002

8. I/O Setup/Hold Plateau Derating

This derating table is used to increase tDS/tDH in the case where the input level is flat below VREF ± 310mV for a duration of

up to 2ns.

9. I/O Delta Rise/Fall Rate(1/slew-rate) Derating

This derating table is used to increase tDS/tDH in the case where the DQ and DQS slew rates differ. The Delta Rise/Fall Rate

is calated as 1/SlewRate1-1/SlewRate2. For example, if slew rate 1 = 5V/ns and slew rate 2 =.4V/ns then the Delta Rise/Fall

Rate =-0/5ns/V. Input S/H slew rate based on larger of AC-AC delta rise/fall rate and DC-DC delta rise/fall rate.

10. This parameter is fir system simulation purpose. It is guranteed by design.

11. For each of the terms, if not already an integer, round to the next highest integer. tCK is actual to the system clock cycle time.

I/O Input Level ∆tDS ∆tDH

(mV) (ps) (ps)

± 280 +50 +50

Delta Rise/Fall Rate ∆tDS ∆tDH

(ns/V) (ps) (ps)

0 0 0

±0.25 +50 +50

±0.5 +100 +100

The following table specifies derating values for the specifications listed if the single-ended clock skew rate is less than 1.0V/ns.

CK slew rate

(Single ended) ∆tIH/tIS

(ps) ∆tDSS/tDSH

(ps) ∆tAC/tDQSCK

(ps) ∆tLZ(min)

(ps) ∆tHZ(max)

(ps)

1.0V/ns 00000

0.75V/ns +50 +50 +50 -50 +50

0.5V/ns +100 +100 +100 -100 +100

184pin Unbuffered DDR SDRAM MODULE

M381L6423CTL

Rev. 0.3 May. 2002

Command Truth Table

(V=Valid, X=Don′t Care, H=Logic High, L=Logic Low)

COMMAND CKEn-1 CKEn CS RAS CAS WE BA0,1 A10/AP A11, A12

A9 ~ A0Note

Refresh

Auto Refresh HHLL LHX3

Self

Refresh

Entry L 3

Exit LHLH H H X3

HX X X 3

Bank Active & Row Addr. HXL L HHVRow Address

Read &

Column Address Auto Precharge Disable HXLHLHVLColumn

Address

(A0~A9)

Auto Precharge Enable H4

Write &

Column Address Auto Precharge Disable HXLHL L VLColumn

Address

(A0~A9)

Auto Precharge Enable H4, 6

Burst Stop HXLH H LX7

Precharge Bank Selection HXL L HLVLX

All Banks XH5

Active Power Down Entry HLHX X X

XLV V V

Exit LHX X X X

Precharge Power Down Mode

Entry HLHX X X

LH H H

Exit LHHX X X

LV V V

DM HX X 8

No operation (NOP) : Not defined HXHX X X X9

LH H H 9

Note : 1. OP Code : Operand Code. A0 ~ A12 & BA0 ~ BA1 : Program keys. (@EMRS/MRS)

2. EMRS/ MRS can be issued only at all banks precharge state.

A new command can be issued 2 clock cycles after EMRS or MRS.

3. Auto refresh functions are same as the CBR refresh of DRAM.

The automatical precharge without row precharge command is meant by "Auto".

Auto/self refresh can be issued only at all banks precharge state.

4. BA0 ~ BA1 : Bank select addresses.

If both BA0 and BA1 are "Low" at read, write, row active and precharge, bank A is selected.

If BA0 is "High" and BA1 is "Low" at read, write, row active and precharge, bank B is selected.

If BA0 is "Low" and BA1 is "High" at read, write, row active and precharge, bank C is selected.

If both BA0 and BA1 are "High" at read, write, row active and precharge, bank D is selected.

5. If A10/AP is "High" at row precharge, BA0 and BA1 are ignored and all banks are selected.

6. During burst write with auto precharge, new read/write command can not be issued.

Another bank read/write command can be issued after the end of burst.

New row active of the associated bank can be issued at tRP after the end of burst.

7. Burst stop command is valid at every burst length.

8. DM sampled at the rising and falling edges of the DQS and Data-in are masked at the both edges (Write DM latency is 0).

9. This combination is not defined for any function, which means "No Operation(NOP)" in DDR SDRAM.

184pin Unbuffered DDR SDRAM MODULE

M381L6423CTL

Rev. 0.3 May. 2002

Tolerances : ± 0.005(.13) unless otherwise specified.

The used device is 32Mx8 DDR SDRAM, TSOP.

SDRAM Part NO : K4H560838C

PACKAGE DIMENSIONS

5.25 ± 0.005

5.077

Units : Inches (Millimeters)

0.050

0.0078 ±0.006

(0.20 ±0.15)

0.145 Max

0.050 ± 0.0039

(1.270 ± 0.10)

0.100 Min

(2.30 Min)

0.393

(10.00)

(1.270)

0.100

(2.50 )

Detail B

A B

(128.950)

(133.350 ± 0.13)

0.250

(6.350)

Detail A

0.157

(4.00)

0.071

(1.80)

(3.67 Max)

0.039 ± 0.002

(1.000 ± 0.050)

(3.80)

2.175

(6.62)

(64.77) (49.53)

(17.80)

2.55 1.95

0.26

2.500

0.7

0.10 MCB A

0.10 MCBA M

0.1496

(3.00)

0.118

R (2.00)

0.0787

(4.00)

0.1575

1.25 ± 0.006

(31.75 ±0.15)

(4.00)

(2X) 0.157

(3.00)

0.118