NT256D72S89AKGU-75B - Nanya Technology

NT256D72S89AKGU

256MB : 32M x 72

Low Profile Registered DDR SDRAM DIMM

184pin Low Profile Registered DDR SDRAM MODULE Based on 32Mx8 DDR SDRAM

Features

• 32Mx72 Low Profile Registered DDR DIMM based on 32Mx8

DDR SDRAM

• JEDEC Standard 184-pin Dual In-Line Memory Module

• Error Check Correction (ECC) Support

• Phase-lock loop (PLL) clock driver to reduce loading

• Registered inputs with one-clock delay

• Performance:

PC1600 PC2100

Speed Sort -8B -75B -7K

DIMM CAS Latency* 3 3.5 3

Unit

f CK Clock Frequency 100 133 133 MHz

t CK Clock Cycle 10 7.5 7.5 ns

f DQ DQ Burst Frequency 200 266 266 MHz

• Intended for 100 MHz and 133 MHz applications

• Inputs and outputs are SSTL-2 compatible

• VDD = 2.5Volt ± 0.2, VDDQ = 2.5Volt ± 0.2

• SDRAMs have 4 internal banks for concurrent operation

• Differential clock inputs

• Data is read or written on both clock edges

• Bi-directional data strobe with one clock cycle preamble and

one-half clock post-amble

• Address and control signals are fully synchronous to positive

clock edge

• Programmable Operation:

- Device CAS Latency: 2, 2.5

- Burst Type: Sequential or Interleave

- Burst Length: 2, 4, 8

- Operation: Burst Read and Write

• Auto Refresh (CBR) and Self Refresh Modes

• Automatic and controlled precharge commands

• 13/10/1 Addressing (row/column/bank)

• 7.8 µs Max. Average Periodic Refresh Interval

• Serial Presence Detect

• Gold contacts

• SDRAMs in 66-pin TSOP Type II Package

* One clock cycle added for registered DIMMs to account for input register.

escription

NT256D72S89AKGU is a Low Profile Registered 184-Pin 1U Double Data Rate (DDR) Synchronous DRAM Dual In-Line Memory Module

(DIMM), organized as a one-bank 32Mx72 high-speed memory array. The module uses nine 32Mx8 DDR SDRAMs in 400 mil TSOP II

packages. These DIMMs are manufactured using raw cards developed for broad industry use as reference designs. The use of these

common design files minimizes electrical variation between suppliers. All NANYA DDR SDRAM DIMMs provide a high-performance,

flexible 8-byte interface in a 5.25” long space-saving footprint.

The DIMM is intended for use in applications operating up to 133 MHz clock speeds and achieves high-speed data transfer rates of up to

266 MHz. Prior to any access operation, the device CAS latency and burst type/ length/operation type must be programmed into the

DIMM by address inputs A0-A12 and I/O inputs BA0 and BA1 using the mode register set cycle.

The DIMM uses serial presence-detect implemented via a serial 2,048-bit EEPROM using a standard IIC protocol. The first 128 bytes of

serial PD data are programmed and locked during module assembly. The remaining 128 bytes are available for use by the customer.

rdering Information

Part Number Speed Organization Leads Power

143MHz (7ns @ CL = 2.5)

NT256D72S89AKGU-7K 133MHz (7.5ns @ CL= 2) DDR266A PC2100

133MHz (7.5ns @ CL= 2.5)

NT256D72S89AKGU-75B 100MHz (10ns @ CL = 2) DDR266B PC2100

125MHz (8ns @ CL = 2.5)

NT256D72S89AKGU-8B 100MHz (10ns @ CL = 2) DDR200 PC1600

32Mx72 Gold 2.5V

REV 1.1 1

12/2002 © NANYA TECHNOLOGY CORP.

NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.

NT256D72S89AKGU

256MB : 32M x 72

Low Profile Registered DDR SDRAM DIMM

Pin Description

CK0, CK0 Differential Clock Inputs DQ0-DQ63 Data input/output

CKE0 Clock Enable CB0-CB7 Check Bit Data Input/Output

RAS Row Address Strobe DQS0-DQS8 Bidirectional data strobes

CAS Column Address Strobe DM0-DM8 Input Data Mask

WE Write Enable VDD Power (2.5V)

S0 Chip Selects VDDQ Supply voltage for DQs (2.5V)

A0-A9, A11, A12 Address Inputs VSS Ground

A10/AP Address Input/Autoprecharge NC No Connect

BA0, BA1 SDRAM Bank Address Inputs SCL Serial Presence Detect Clock Input

RESET Reset pin SDA Serial Presence Detect Data input/output

VREF Ref. Voltage for SSTL_2 inputs SA0-2 Serial Presence Detect Address Inputs

VDDID VDD Identification flag. VDDSPD Serial EEPROM positive power supply

(2.5V)

Pinout

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

1 VREF 32 A5 62 VDDQ 93 VSS 124 VSS 154 RAS

2 DQ0 33 DQ24 63 WE 94 DQ4 125 A6 155 DQ45

3 VSS 34 VSS 64 DQ41 95 DQ5 126 DQ28 156 VDDQ

4 DQ1 35 DQ25 65

CAS 96 VDDQ 127 DQ29 157 S0

5 DQS0 36 DQS3 66 VSS 97 DM0 128 VDDQ 158 NC

6 DQ2 37 A4 67 DQS5 98 DQ6 129 DM3 159 DM5

7 VDD 38 VDD 68 DQ42 99 DQ7 130 A3 160 VSS

8 DQ3 39 DQ26 69 DQ43 100 VSS 131 DQ30 161 DQ46

9 NC 40 DQ27 70 VDD 101 NC 132 VSS 162 DQ47

10 RESET 41 A2 71 NC 102 NC 133 DQ31 163 NC

11 VSS 42 VSS 72 DQ48 103 NC 134 CB4 164 VDDQ

12 DQ8 43 A1 73 DQ49 104 VDDQ 135 CB5 165 DQ52

13 DQ9 44 CB0 74 VSS 105 DQ12 136 VDDQ 166 DQ53

14 DQS1 45 CB1 75 NC 106 DQ13 137 CK0 167 NC

15 VDDQ 46 VDD 76 NC 107 DM1 138 CK0 168 VDD

16 NC 47 DQS8 77 VDDQ 108 VDD 139 VSS 169 DM6

17 NC 48 A0 78 DQS6 109 DQ14 140 DM8 170 DQ54

18 VSS 49 CB2 79 DQ50 110 DQ15 141 A10 171 DQ55

19 DQ10 50 VSS 80 DQ51 111 NC 142 CB6 172 VDDQ

20 DQ11 51 CB3 81 VSS 112 VDDQ 143 VDDQ 173 NC

21 CKE0 52 BA1 82 VDDID 113 NC 144 CB7 174 DQ60

22 VDDQ KEY 83 DQ56 114 DQ20 KEY 175 DQ61

23 DQ16 53 DQ32 84 DQ57 115 A12 145 VSS 176 VSS

24 DQ17 54 VDDQ 85 VDD 116 VSS 146 DQ36 177 DM7

25 DQS2 55 DQ33 86 DQS7 117 DQ21 147 DQ37 178 DQ62

26 VSS 56 DQS4 87 DQ58 118 A11 148 VDD 179 DQ63

27 A9 57 DQ34 88 DQ59 119 DQS11 149 DM4 180 VDDQ

28 DQ18 58 VSS 89 VSS 120 VDD 150 DQ38 181 SA0

29 A7 59 BA0 90 NC 121 DQ22 151 DQ39 182 SA1

30 VDDQ 60 DQ35 91 SDA 122 A8 152 VSS 183 SA2

31 DQ19 61 DQ40 92 SCL 123 DQ23 153 DQ44 184 VDDSPD

REV 1.1 2

12/2002 © NANYA TECHNOLOGY CORP.

NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.

NT256D72S89AKGU

256MB : 32M x 72

Low Profile Registered DDR SDRAM DIMM

Input/Output Functional Description

Symbol Type Polarity Function

CK0 (SSTL) Positive

Edge

The positive line of the differential pair of system clock inputs which drives the input to

the on-DIMM PLL. All the DDR SDRAM address and control inputs are sampled on the

rising edge of their associated clocks.

CK0 (SSTL) Negative

Edge The negative line of the differential pair of system clock inputs which drives the input to

the on-DIMM PLL.

CKE0 (SSTL) Active

High

Activates the SDRAM CK signal when high and deactivates the CK signal when low. By

deactivating the clocks, CKE low initiates the Power Down mode, or the Self Refresh

mode.

S0 (SSTL) Active

Low

Enables the associated SDRAM command decoder when low and disables the

command decoder when high. When the command decoder is disabled, new commands

are ignored but previous operations continue.

RAS, CAS, WE (SSTL) Active

Low When sampled at the positive rising edge of the clock, RAS, CAS, WE define the

operation to be executed by the SDRAM.

VREF Supply Reference voltage for SSTL-2 inputs

VDDQ Supply

Isolated power supply for the DDR SDRAM output buffers to provide improved noise

immunity

BA0, BA1 (SSTL) - Selects which SDRAM bank is to be active.

A0 - A9

A10/AP

A11, A12 (SSTL) -

During a Bank Activate command cycle, A0-A12 defines the row address (RA0-RA12)

when sampled at the rising clock edge.

During a Read or Write command cycle, A0-A9, A11 defines the column address

(CA0-CA10) when sampled at the rising clock edge. In addition to the column address,

AP is used to invoke Autoprecharge operation at the end of the Bur st Read or Write

cycle. If AP is high, autoprecharge is selected and BA0/BA1 define the bank to be

precharged. If AP is low, autoprecharge is disabled.

During a Precharge command cycle, AP is used in conjunction with BA0/BA1 to control

which bank(s) to precharge. If AP is high all 4 banks will be precharged regardless of the

state of BA0/BA1. If AP is low, then BA0/BA1 are used to define which bank to

pre-charge.

DQ0 - DQ63 (SSTL) -

Data and Check Bit input/output pins operate in the same manner as on conventional

DRAMs.

DQ0 – DQ63

CB0 – CB7 (SSTL) Active

High Data and Check Bit Input/Output pins. Check bits are only applicable on the x72 DIMM

configurations.

VDD, VSS Supply Power and ground for the DDR SDRAM input buffers and core logic

DQS0 – DQS8 (SSTL)

Negative

and

Positive

Edge

Data strobe for input and output data

DM0 – DM8 Input Active

High

The data write masks, associated with one data byte. In Write mode, DM operates as a

byte mask by allowing input data to be written if it is low but blocks the write operation if

it is high. In Read mode, DM lines have no effect. DM8 is associated with check bits

CB0-CB7, and is not used on x64 modules.

RESET (LVC-MOS) Active

Low

SA0 – SA2 -

Address inputs. Connected to either VDD or VSS on the system board to configure the

Serial Presence Detect EEPROM address.

SDA -

This bi-directional pin is used to transfer data into or out of the SPD EEPROM. A resistor

must be connected from the SDA bus line to V DD to act as a pullup.

SCL -

This signal is used to clock data into and out of the SPD EEPROM. A resistor may be

connected from the SCL bus time to V DD to act as a pullup.

V DDSPD Supply Serial EEPROM positive power supply.

REV 1.1 3

12/2002 © NANYA TECHNOLOGY CORP.

NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.

NT256D72S89AKGU

256MB : 32M x 72

Low Profile Registered DDR SDRAM DIMM

Functional Block Diagram (1 Bank, 32Mx8 DDR SDRAMs)

Serial PD

A0 A2A1

SCL

WP SDA

SA0 SA2SA1

A0-A12 : SDRAMs D0-D8

BA0-BA1 : SDRAMs D0-D8

RAS : SDRAMs D0-D8

CKE : SDRAMs D0-D8

CAS : SDRAMs D0-D8

WE : SDRAMs D0-D8

BA0-BA1

A0-A12

RAS

CAS

CKE0

PCK

RA0-RA12

RBA0-RBA1

RRAS

RCAS

RCKE0

RWE

RS0 CS : SDRAMs D0-D8

RESET

Serial PD

DDSPD

DDQ

REF

DDID

D0-D8

Strap : see Note 4

* Wire per Clock Loading Table/Wiring Diagrams

CK0, CK0 --------- PLL*

Notes : 1. DQ-to-I/O wiring may be changed within a byte.

2. DQ/DQS/DM/CKE/CS relationships are maintained as sh own.

3. DQ/DQS resistors are 22 Ohms.

4. V

DDID

strap connections (for memory device V

DDQ

STRAP OUT (OPEN): V

= V

DDQ

STRAP IN (V

): V

is not equal to V

DDQ

5. Address and control resistors are 22 Ohms.

RS0

DM0/DQS9

DQ0

DQ1

DQ2

DQ7

DQ4

DQ6

DQ5

DQ3

DQ8

DQ9

DQ10

DQ15

DQ12

DQ14

DQ13

DQ11

DQS0 DM4/DQS13

DQS4

DM1/DQS10

DQS1

DM2/DQS11

DQS2

DM3/DQS12

DQS3

DQ32

DQ33

DQ34

DQ39

DQ36

DQ38

DQ37

DQ35

DQS5

DM5/DQS14

DQS6

DM6/DQS15

DQS7

DM7/DQS16

DQ16

DQ17

DQ18

DQ23

DQ20

DQ22

DQ21

DQ19

DQ24

DQ25

DQ26

DQ31

DQ28

DQ30

DQ29

DQ27

DQ40

DQ41

DQ42

DQ47

DQ44

DQ46

DQ45

DQ43

DQ48

DQ49

DQ50

DQ55

DQ52

DQ54

DQ53

DQ51

DQ56

DQ57

DQ58

DQ63

DQ60

DQ62

DQ61

DQ59

CB0

CB1

CB2

CB7

CB4

CB6

CB5

CB3

DM8/DQS17

DQS8

I/O 7

I/O 6

I/O 3

I/O 4

I/O 5

I/O 0

I/O 1

I/O 2

DM CS

DQS

I/O 7

I/O 6

I/O 3

I/O 4

I/O 5

I/O 0

I/O 1

I/O 2

DM CS

DQS

I/O 7

I/O 6

I/O 3

I/O 4

I/O 5

I/O 0

I/O 1

I/O 2

DM CS

DQS

I/O 7

I/O 6

I/O 3

I/O 4

I/O 5

I/O 0

I/O 1

I/O 2

DM CS

DQS

I/O 7

I/O 6

I/O 3

I/O 4

I/O 5

I/O 0

I/O 1

I/O 2

DM CS

DQS

I/O 7

I/O 6

I/O 3

I/O 4

I/O 5

I/O 0

I/O 1

I/O 2

DM CS

DQS

I/O 7

I/O 6

I/O 3

I/O 4

I/O 5

I/O 0

I/O 1

I/O 2

DM CS

DQS

I/O 7

I/O 6

I/O 3

I/O 4

I/O 5

I/O 0

I/O 1

I/O 2

DM CS

DQS

I/O 7

I/O 6

I/O 3

I/O 4

I/O 5

I/O 0

I/O 1

I/O 2

DM CS

DQS

REV 1.1 4

12/2002 © NANYA TECHNOLOGY CORP.

NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.

NT256D72S89AKGU

256MB : 32M x 72

Low Profile Registered DDR SDRAM DIMM

Serial Presence Detect -- Part 1 of 2

32Mx72 1 BANK REGISTERED DDR SDRAM DIMM based on 32Mx8, 4Banks, 8K Refresh, 2.5V DDR SDRAMs with SPD

SPD Entry Value Serial PD Data Entry (Hexadecimal) Note

Byte Description DDR266A

-7K DDR266B

-75B DDR200

-8B DDR266A

-7K DDR266B

-75B DDR200

-8B

0 Number of Serial PD Bytes Written during

Production 128 80

1 Total Number of Bytes in Serial PD device 256 08

2 Fundamental Memory Type SDRAM DDR 07

3 Number of Row Addresses on Assembly 13 0D

4 Number of Column Addresses on Assembly 11 0A

5 Number of DIMM Bank 1 01

6. Data Width of Assembly X72 48

7 Data Width of Assembly (cont’) X72 00

8 Voltage Interface Level of this Assembly SSTL 2.5V 04

9 DDR SDRAM Device Cycle Time at CL=2.5 7ns 7.5ns 8ns 70 75 80

10 DDR SDRAM Device Access Time from

Clock at CL=2.5 0.75ns 0.75ns 0.8ns 75 75 80

11 DIMM Configuration Type ECC 02

12 Refresh Rate/Type 7.8us / SR 82

13 Primary DDR SDRAM Width X8 08

14 Error Checking DDR SDRAM Device Width X8 08

15 DDR SDRAM Device Attr: Min CLk Delay,

Random Col Access 1 Clock 01

16 DDR SDRAM Device Attributes:

Burst Length Supported 2, 4, 8 0E

17 DDR SDRAM Device Attributes: Number of

Device Banks 4 04

18 DDR SDRAM Device Attributes: CAS

Latencies Supported 2/2.5 2/2.5 2/2.5 0C 0C 0C

19 DDR SDRAM Device Attributes: CS Latency 0 01

20 DDR SDRAM Device Attributes: WE Latency 1 02

21 DDR SDRAM Device Attributes: Differential Clock, PLL, REGISTER 26

22 DDR SDRAM Device Attributes: General +/-0.2V Voltage Tolerance 00

23 Minimum Clock Cycle at CL=2 7.5ns 10ns 10ns 75 A0 A0

24 Maximum Data Access Time from Clock at

CL=2 0.75ns 0.75ns 0.8ns 75 75 80

25 Minimum Clock Cycle Time at CL=1 N/A 00

26 Maximum Data Access Time from Clock at

CL=1 N/A 00

27 Minimum Row Precharge Time (tRP) 20ns 20ns 30ns 50 50 78

28 Minimum Row Active to Row Active delay

(tRRD) 15ns 15ns 15ns 3C 3C 3C

29 Minimum RAS to CAS delay (tRCD) 20ns 20ns 30ns 50 50 78

30 Minimum RAS Pulse Width (tRAS) 45ns 45ns 50ns 2D 2D 32

31 Module Bank Density 512MB 40

32 Address and Command Setup Time Before

Clock 0.9ns 0.9ns 1.1ns 90 90 B0

33 Address and Command Hold Time After

Clock 0.9ns 0.9ns 1.1ns 90 90 B0

34 Data Input Setup Time Before Clock 0.5ns 0.5ns 0.6ns 50 50 60

35 Data Input Hold Time After Clock 0.5ns 0.5ns 0.6ns 50 50 60

36-61 Reserved Undefined 00

62 SPD Revision Initial Initial Initial 00 00 00

63 Checksum Data A7 D7 AD

REV 1.1 5

12/2002 © NANYA TECHNOLOGY CORP.

NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.

NT256D72S89AKGU

256MB : 32M x 72

Low Profile Registered DDR SDRAM DIMM

Serial Presence Detect -- Part 2 of 2

32Mx72 1 BANK REGISTERED DDR SDRAM DIMM based on 32Mx8, 4Banks, 8K Refresh, 2.5V DDR SDRAMs with SPD

SPD Entry Value Serial PD Data Entry (Hexadecimal)

Byte Description DDR266A

-7K DDR266B

-75B DDR200

-8B DDR266A

-7K DDR266B

-75B DDR200

-8B Note

64-71 Manufacturer’s JEDEC ID Code NANYA 7F7F7F0B00000000

72 Module Manufacturing Location N/A 00

73-90 Module Part number N/A N/A N/A 00 00 00

91-92 Module Revision Code N/A 00

93-94 Module Manufacturing Data Year/Week Code yy/ww 1, 2

95-98 Module Serial Number Serial Number 00

99-255 Reserved Undefined 00

1. yy= Binary coded decimal year code, 0-99(Decimal), 00-63(Hex)

2. ww= Binary coded decimal year code, 01-52(Decimal), 01-34(Hex)

REV 1.1 6

12/2002 © NANYA TECHNOLOGY CORP.

NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.

NT256D72S89AKGU

256MB : 32M x 72

Low Profile Registered DDR SDRAM DIMM

Absolute Maximum Ratings

Symbol Parameter Rating Units

VIN, VOUT Voltage on I/O pins relative to Vss -0.5 to VDDQ+0.5 V

VIN Voltage on Input relative to Vss -0.5 to +2.7 V

VDD Voltage on VDD supply relative to Vss -0.5 to +2.7 V

VDDQ Voltage on VDDQ supply relative to Vss -0.5 to +2.7 V

TA Operating Temperature (Ambient) 0 to +70 °C

TSTG Storage Temperature (Plastic) -55 to +150 °C

PD Power Dissipation 9 W

IOUT Short Circuit Output Current 50 mA

Note: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is

stress rating only, and functional operation of the device at these or any other conditions above those indicated in the operational

sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.

Capacitance Parameter Symbol Max. Units Notes

Input Capacitance: CK0, CK0 CI1 TBD pF 1

Input Capacitance: A0-A12, BA0, BA1, WE, RAS, CAS, CKE0, S0 CI2 TBD pF 1

Input Capacitance: RESET CI3 TBD pF 1

Input Capacitance: SA0-SA2, SCL CI4 TBD pF 1

Input/Output Capacitance DQ0-63; DQS0-8, CB0-7 CIO1 TBD pF 1, 2

Input/Output Capacitance: SDA CIO3 TBD pF

1. VDDQ = VDD = 2.5V ± 0.2V, f = 100 MHz, TA = 25 °C, VOUT (DC) = VDDQ/2, VOUT (Peak to Peak) = 0.2V.

2. DM inputs are grouped with I/O pins reflecting the fact that they are matched in loading to DQ and DQS to facilitate trace matching

at the board level.

REV 1.1 7

12/2002 © NANYA TECHNOLOGY CORP.

NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.

NT256D72S89AKGU

256MB : 32M x 72

Low Profile Registered DDR SDRAM DIMM

DC Electrical Characteristics and Operating Conditions

(TA = 0 °C ~ 70 °C; VDDQ = 2.5V ± 0.2V; VDD = 2.5V ± 0.2V, See AC Characteristics)

Symbol Parameter Min Max Units Notes

VDD Supply Voltage 2.3 2.7 V 1

VDDQ I/O Supply Voltage 2.3 2.7 V 1

VSS, VSSQ Supply Voltage, I/O Supply Voltage 0 0 V

VREF I/O Reference Voltage 0.49 x VDDQ 0.51 x VDDQ V 1, 2

VTT I/O Termination Voltage (System) VREF - 0.04 VREF + 0.04 V 1, 3

VIH (DC) Input High (Logic1) Voltage VREF + 0.15 VDDQ + 0.3 V 1

VIL (DC) Input Low (Logic0) Voltage -0.3 VREF - 0.15 V 1

VIN (DC) Input Voltage Level, CK and CK Inputs -0.3 VDDQ + 0.3 V 1

VID (DC) Input Differential Voltage, CK and CK Inputs 0.30 V DDQ + 0.6 V 1, 4

II Input Leakage Current

Any input 0V ≤ VIN ≤ VDD; (All other pins not under test = 0V) -5 5 uA 1

IOZ Output Leakage Current

(DQs are disabled; 0V ≤ Vout ≤ VDDQ -5 5 uA 1

IOH Output High Current

(VOUT = VDDQ -0.373V, min VREF, min VTT) -16.8 - mA 1

IOL Output Low Current

(VOUT = 0.373, max VREF, max VTT) 16.8 - mA 1

1. Inputs are not recognized as valid until VREF stabilizes.

2. VREF is expected to be equal to 0.5 V DDQ of the transmitting device, and to track variations in the DC level of the same.

Peak-to-peak noise on VREF may not exceed 2% of the DC value.

3. VTT is not applied directly to the DIMM. 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.

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

REV 1.1 8

12/2002 © NANYA TECHNOLOGY CORP.

NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.

NT256D72S89AKGU

256MB : 32M x 72

Low Profile Registered DDR SDRAM DIMM

AC Characteristics

(Notes 1-5 apply to the following Tables; Electrical Characteristics and DC Operating Conditions, AC Operating Conditions, Operating,

Standby, and Refresh Currents, and Electrical Characteristics and AC Timing.)

1. All voltages referenced to VSS.

2. Tests for AC timing, IDD, and electrical, AC and DC characteristics, may be conducted at nominal reference/supply voltage levels, but

the related specifications and device operation are guaranteed for the full voltage range specified.

3. Outputs measured with equivalent load. Refer to the AC Output Load Circuit below.

4. AC timing and IDD tests may use a VIL to VIH swing of up to 1.5V in the test environment, but input timing is still referenced to VREF (or

to the crossing point for CK, CK), and parameter specifications are guaranteed for the specified AC input levels under normal use

conditions. The minimum slew rate for the input signals is 1V/ns in the range between VIL (AC) and VIH (AC) unless otherwise specified.

5. The AC and DC input level specifications are as defined in the SSTL_2 Standard (i.e. the receiver effectively switches as a result of the

signal crossing the AC input level, and remains in that state as long as the signal does not ring back above (below) the DC input LOW

(HIGH) level.

AC Output Load Circuits

Timing Reference Point

50 ohms

30 pF

Output

OUT

AC Operating Conditions

(TA = 0 °C ~ 70 °C; VDDQ = 2.5V ± 0.2V; VDD = 2.5V ± 0.2V, See AC Characteristics)

Symbol Parameter/Condition Min Max Unit Notes

VIH (AC) Input High (Logic 1) Voltage V REF + 0.31 - V 1, 2

VIL (AC) Input Low (Logic 0) Voltage - V REF - 0.31 V 1, 2

VID (AC) Input Differential Voltage, CK and CK Inputs 0.7 V DDQ + 0.6 V 1, 2, 3

VIX (AC) Input Differential Pair Cross Point Voltage, CK and CK Inputs 0.5 x VDDQ - 0.2 0.5 x VDDQ + 0.2 V 1, 2, 4

1. Input slew rate = 1V/ ns.

2. Inputs are not recognized as valid until VREF stabilizes.

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

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

REV 1.1 9

12/2002 © NANYA TECHNOLOGY CORP.

NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.

NT256D72S89AKGU

256MB : 32M x 72

Low Profile Registered DDR SDRAM DIMM

Operating, Standby, and Refresh Currents

(TA = 0 °C ~ 70 °C; VDDQ = 2.5V ± 0.2V; VDD = 2.5V ± 0.2V, See AC Characteristics)

Symbol Parameter/Condition PC2100

(-7K/-75B) PC1600

(-8K) Unit Notes

I DD0 Operating Current: one bank; active/precharge; tRC = tRC (MIN); tCK = tCK

(MIN); DQ, DM, and DQS inputs changing t wice per clock cycle; address

and control inputs changing once per clock cycle 1500 1230 mA 1, 2

I DD1 Operating Current: one bank; active/read/precharge; Burst = 2; t RC = tRC

(MIN); CL=2.5; tCK = tCK (MIN); IOUT = 0mA; address and control inputs

changing once per clock cycle 1730 1410 mA 1, 2

I DD2P Precharge Power-Down Standby Current: all banks idle; power-down

mode; CKE ≤ VIL (MAX); tCK = tCK (MIN) 800 650 mA 1, 2

I DD2N Idle Standby Current: CS ≥ VIH (MIN); all banks idle; CKE ≥ VIH (MIN); tCK =

tCK (MIN); address and control inputs changing once per clock cycle 1000 780 mA 1, 2

I DD3P Active Power-Down Standby Current: one bank active; power-down mode;

CKE ≤ VIL (MAX); tCK = tCK (MIN) 800 650 mA 1, 2

I DD3N

Active Standby Current: one bank; active/precharge; CS ≥ VIH (MIN); CKE ≥

VIH (MIN); tRC = tRAS (MAX); tCK = tCK (MIN); DQ, DM, and DQS inputs

changing twice per clock cycle; address and control inputs changing once

per clock cycle

1150 1000 mA 1, 2

I DD4R Operating Current: one bank; Burst = 2; reads; continuous burst; address

and control inputs changing once per clock cycle; DQ and DQS outputs

changing twice per clock cycle; CL = 2.5; tCK = tCK (MIN); IOUT = 0mA 2400 1980 mA 1, 2

I DD4W Operating Current: one bank; Burst = 2; writes; continuous burst; address

and control inputs changing once per clock cycle; DQ and DQS inputs

changing twice per clock cycle; CL=2.5; tCK = tCK (MIN) 2000 1500 mA 1, 2

I DD5 Auto-Refresh Current: tRC = tRFC (MIN) 2400 2000 mA 1, 2, 4

I DD6 Self-Refresh Current: CKE ≤ 0.2V 80 80 mA 1, 2

I DD7 Operating Current: four bank; four bank interleaving with BL = 4, ad dress

and control inputs randomly changing; 50% of data changing at every

transfer; tRC = tRC (min); IOUT = 0mA. 3300 2880 mA 1, 2

1. I DD specifications are tested after the device is properly initialized.

2. Input slew rate = 1V/ ns.

3. Enables on-chip refresh and address counters.

4. Current at 7.8 µs is time-averaged value of IDD5 at tRFC (MIN) and IDD2P over 7.8 µs.

REV 1.1 10

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NT256D72S89AKGU

256MB : 32M x 72

Low Profile Registered DDR SDRAM DIMM

AC Timing Specifications for DDR SDRAM Devices Used on Module

(TA = 0 °C ~ 70 °C; VDDQ = 2.5V ± 0.2V; VDD = 2.5V ± 0.2V, See AC Characteristics) (Part 1 of 2)

-7K -75B -8B

Symbol Parameter Min. Max. Min. Max. Min. Max.

Unit Notes

tAC DQ output access time from CK/CK -0.75 +0.75 -0.75 +0.75 -0.8 +0.8 ns 1-4

tDQSCK DQS output access time from CK/CK -0.75 +0.75 -0.75 +0.75 -0.8 +0.8 ns 1-4

tCH CK high-level width 0.45 0.55 0.45 0.55 0.45 0.55 tCK 1-4

tCL CK low-level width 0.45 0.55 0.45 0.55 0.45 0.55 tCK 1-4

tCK CL=2.5 7 12 7.5 12 8 12 ns 1-4

tCK Clock cycle time CL=2 7.5 12 10 12 10 12 ns 1-4

tDH DQ and DM input hold time 0.5 0.5 0.6 ns 1-4,

15, 16

tDS DQ and DM input setup time 0.5 0.5 0.6 ns 1-4,

15, 16

tDIPW DQ and DM input pulse width (each

input) 1.75 1.75 2 ns 1-4

tHZ Data-out high-impedance time from

CK/CK -0.75 +0.75 -0.75 +0.75 -0.8 +0.8 ns 1-4, 5

tLZ Data-out low-impedance time from

CK/CK -0.75 +0.75 -0.75 +0.75 -0.8 +0.8 ns 1-4, 5

tDQSQ DQS-DQ skew (DQS & associated

DQ signals) 0.5 0.5 0.6 ns 1-4

tDQSQA DQS-DQ skew (DQS & all DQ

signals) 0.5 0.5 0.6 ns 1-4

tHP Minimum half clk period for any given

cycle; defined by clk high (tCH )

or clk low (tCL ) time

tCH

tCL tCH

tCL t

CK 1-4

tQH Data output hold time from DQS tHP -

0.75ns tHP -

1.0ns t

CK 1-4

tDQSS Write command to 1st DQS latching

transition 0.75 1.25 0.75 1.25 0.75 1.25 tCK 1-4

tDQSL,H DQS input low (high) pulse width

(write cycle) 0.35 0.35 0.35 tCK 1-4

tDSS DQS falling edge to CK setup time

(write cycle) 0.2 0.2 0.2 tCK 1-4

tDSH DQS falling edge hold time from CK

(write cycle) 0.2 0.2 0.2 tCK 1-4

tMRD Mode register set command cycle

time 14 15 16 ns 1-4

tWPRES Write preamble setup time 0 0 0 ns 1-4, 7

tWPST Write postamble 0.40 0.60 0.40 0.60 0.40 0.60 tCK 1-4, 6

tWPRE Write preamble 0.25 0.25 0.25 tCK 1-4

tIH Address and control input hold time

(fast slew rate) 0.9 1.1 1.1 ns 2-4,

9, 11,

tIS Address and control input setup time

(fast slew rate) 0.9 1.1 1.1 ns 2-4,

9, 11,

tIH Address and control input hold time

(slow slew rate) 1.0 1.1 1.1 ns 2-4,

10-12,

REV 1.1 11

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NT256D72S89AKGU

256MB : 32M x 72

Low Profile Registered DDR SDRAM DIMM

AC Timing Specifications for DDR SDRAM Devices Used on Module

(TA = 0 °C ~ 70 °C; VDDQ = 2.5V ± 0.2V; VDD = 2.5V ± 0.2V, See AC Characteristics) (Part 2 of 2)

-7K -75B -8B

Symbol Parameter Min. Max. Min. Max. Min. Max.

Unit Notes

tIS Address and control input setup time

(slow slewrate) 1.0 1.0 1.1 ns 2-4,

10-12,

tIPW Input pulse width 2.2 2.2 - ns 2-4,

tRPRE Read preamble 0.9 1.1 0.9 1.1 0.9 1.1 tCK 1-4

tRPST Read postamble 0.40 0.60 0.40 0.60 0.40 0.60 tCK 1-4

tRAS Active to Precharge command 45 120,000 45 120,000 50 120,000 ns 1-4

tRC Active to Active/Auto-refresh

command period 65 65 70 ns 1-4

tRFC Auto-refresh to Active/Auto-refresh

command period 75 75 80

ns 1-4

tRCD Active to Read or Write delay 20 20 20 ns 1-4

tRAP Active to Read Command with

Autoprecharge 20 20 20 ns 1-4

tRP Precharge command period 20 20 20 ns 1-4

tRRD Active bank A to Active bank B

command 15 15 15 ns 1-4

tWR Write recovery time 15 15 15 ns 1-4

tDAL Auto precharge write recovery +

precharge time

(tWR/tCK)

(tRP/tCK) (tWR/tCK)

(tRP/tCK) t

CK 1-4,

tWTR Internal write to read command delay 1 1 1 tCK 1-4

tPDEX Power down exit time 7.5 7.5 8 ns 1-4

tXSNR Exit self-refresh to non-read

command 75 75 80 ns 1-4

tXSRD Exit self-refresh to read command 200 200 200 tCK 1-4

tREFI Average Periodic Refresh Interval 7.8 7.8 7.8 µs1-4, 8

REV 1.1 12

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AC Timing Specification Notes

1. Input slew rate = 1V/ns.

2. The CK/CK input reference level (for timing reference to CK/CK) is the point at which CK and CK cross: the input reference level for

signals other than CK/CK is VREF.

3. Inputs are not recognized as valid until VREF stabilizes.

4. The Output timing reference level, as measured at the timing reference point indicated in AC Characteristics (Note 3) is VTT.

5. tHZ and tLZ transitions occur in the same access time windows as valid data transitions. These parameters are not referred to a

specific voltage level, but specify when the device is no longer driving (HZ), or begins driving (LZ).

6. The maximum limit for this parameter is not a device limit. The device operates with a greater value for this parameter, but system

performance (bus turnaround) degrades accordingly.

7. The specific requirement is that DQS be valid (high, low, or some point on a valid transition) on or before this CK edge. A valid

transition is defined as monotonic and meeting the input slew rate specifications of the device. When no writes were previously in

progress on the bus, DQS will be transitioning from Hi-Z to logic LOW. If a previous write was in progress, DQS could be HIGH, LOW,

or transitioning from high to low at this time, depending on tDQSS.

8. A maximum of eight Auto refresh commands can be posted to any given DDR SDRAM device.

9. For command/address input slew rate >= 1.0 V/ns. Slew rate is measured between VOH (AC) and VOL (AC).

10. For command/address input slew rate >= 0.5 V/ns and < 1.0 V/ns. Slew rate is measured between VOH (AC) and VOL (AC).

11. CK/CK slew rates are >= 1.0 V/ns.

12. These parameters guarantee device timing, but they are not necessarily tested on each device, and they may be guaranteed by

design or tester characterization.

13. For each of the terms in parentheses, if not already an integer, round to the next highest integer. t CK is equal to the actual system

clock cycle time. For example, for PC2100 at CL= 2.5, t DAL = (15n s/7.5ns) +(20ns/7.0ns) = 2 + 3 = 5.

14. An input setup and hold time derating table is used to increase t IS and t IH in the case where the input slew rate is below 0.5 V/ns.

Input Slew Rate Delta (tIS) Delta (tIH) Unit Note

0.5 V/ns 0 0 ps 1, 2

0.4 V/ns +50 0 ps 1, 2

0.3 V/ns +100 0 ps 1, 2

1. Input slew rate is based on the lesser of the slew rates determined by either V IH (AC) to V IL (AC) or V IH (DC) to V IL (DC), similarly for

rising transitions.

2. These derating parameters may be guaranteed by design or tester characterization and are not necessarily tested on each device.

15. An input setup and hold time derating table is used to increase t DS and t DH in the case where the I/O slew rate is below 0.5 V/ns.

Input Slew Rate Delta (tDS) Delta (tDH) Unit Note

0.5 V/ns 0 0 ps 1, 2

0.4 V/ns +75 +75 ps 1, 2

0.3 V/ns +150 +150 ps 1, 2

1. I/O slew rate is based on the lesser of the slew rates determined by either V IH (AC) to V IL (AC) or V IH (DC) to V IL (DC), similarly for

rising transitions.

2. These derating parameters may be guaranteed by design or tester characterization and are not necessarily tested on each device.

16. An I/O Delta Rise, Fall Derating table is used to increase t DS and t DH in the case where DQ, DM, and DQS slew rates differ.

Delta Rise and Fall Rate Delta (tDS) Delta (tDH) Unit Note

0.0 ns/V 0 0 ps 1-4

0.25 ns/V +50 +50 ps 1-4

0.5 ns/V +100 +100 ps 1-4

1. Input slew rate is based on the lesser of the slew rates determined by either V IH (AC) to V IL (AC) or V IH (DC) to V IL (DC), similarly for

rising transitions.

2. Input slew rate is based on the larger of AC to AC delta rise, fall rate and DC to DC delta rise, fall rate.

3. The delta rise, fall rate is calculated as: [1/(slew rate 1)] - [1/(slew rate 2)]

For example: slew rate 1 = 0.5 V/ns; slew rate 2 = 0.4 V/ns. Delta rise, fall = (1/0.5) - (1/0.4) [ns/V] = -0.5 ns/V

Using the table above, this would result in an increase in t DS and t DH of 100 ps.

4. These derating parameters may be guaranteed by design or tester characterization and are not necessarily tested on each device.

REV 1.1 13

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NT256D72S89AKGU

256MB : 32M x 72

Low Profile Registered DDR SDRAM DIMM

Package Dimensions

FRONT

1.80

Detail A

0.050

Detail B

1.00 Width

BACK

0.071

3.80

0.15

0.157

4.00

0.039

1.27 Pitch

SIDE

3.99

(Front)

4.24

1.27

0.157 max.

0.167

0.050

Detail A Detail B

0.098

2.5

10.0

0.394

133.35

131.35

128.95

5.250

5.171

5.077

PLL

17.80

2.3

0.091

0.700

30.48

1.200

(2X) 4.00

0.157

Note: All dimensions are typical with tolerances of +/- 0.15 (0.006) unless otherwise stated.

Units: Millimeters (Inches)

REV 1.1 14

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Low Profile Registered DDR SDRAM DIMM

REV 1.1 15

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Revision Log

Rev Date Modification

0.1 08/2002 Preliminary Release

0.2 09/2002 Added tPDEX (Power down exit time) to AC Timing Table

09/2002 Updated SPD Table bytes 27, 29, and 63 for DDR200

0.3 11/2002 Updated IDD currents in Operating, Standby, and Refresh Currents Table

1.0 11/2002 Official Release

1.1 12/2002 Fixed Package Dimensions