NT256D72S89AKGU-7K データシートの表示（PDF） - Nanya Technology

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NT256D72S89AKGU-7K

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

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

• 184-Pin 1U Registered 8-Byte Dual In-Line Memory Module

• 32Mx72 Double Data Rate (DDR) SDRAM DIMM

• Performance:

PC1600 PC2100

Speed Sort

DIMM CAS Latency*

-8B -75B -7K Unit

3

3.5

3

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

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

Description

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 184 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. Clock enable CKE0 controls all devices

on the DIMM.

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.

Ordering Information

Part Number

NT256D72S89AKGU-7K

NT256D72S89AKGU-75B

NT256D72S89AKGU-8B

Speed

143MHz (7ns @ CL = 2.5)

133MHz (7.5ns @ CL= 2)

DDR266A

133MHz (7.5ns @ CL= 2.5)

100MHz (10ns @ CL = 2)

DDR266B

125MHz (8ns @ CL = 2.5)

100MHz (10ns @ CL = 2)

DDR200

PC2100

Organization

Leads

PC2100

32Mx72

Gold

PC1600

Power

2.5V

REV 0.2 (Preliminary)

09/2002

1

© NANYA TECHNOLOGY CORP.

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

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