Datasheet > NT256D72S89AKGU-75B

NT256D72S89AKGU-75B

更新时间： 2024-09-13 10:31:27

品牌	Logo	应用领域
其他 - ETC		内存集成电路动态存储器双倍数据速率时钟
页数	文件大小	规格书
15页	970K
描述
184pin Low Profile Registered DDR SDRAM MODULE

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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:

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

PC1600

-8B

100

PC2100

Unit

Speed Sort

DIMM CAS Latency^*

f CK Clock Frequency

t CK Clock Cycle

-75B

-7K

133

7.5

266

3.5

133

7.5

MHz

f DQ DQ Burst Frequency

200

266

• 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

• Gold contacts

• SDRAMs in 66-pin TSOP Type II Package

• 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.

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

Speed

143MHz (7ns @ CL = 2.5)

Organization

32Mx72

Leads

Gold

Power

2.5V

NT256D72S89AKGU-7K

DDR266A

DDR266B

DDR200

PC2100

PC1600

133MHz (7.5ns @ CL= 2)

133MHz (7.5ns @ CL= 2.5)

100MHz (10ns @ CL = 2)

125MHz (8ns @ CL = 2.5)

100MHz (10ns @ CL = 2)

NT256D72S89AKGU-75B

NT256D72S89AKGU-8B

REV 0.2 (Preliminary)

09/2002

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

12 3 4 5 6 7...15

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与NT256D72S89AKGU-75B相关器件

型号	品牌	获取价格	描述	数据表
NT256D72S89AKGU-7K	ETC	获取价格	184pin Low Profile Registered DDR SDRAM MODULE
NT256D72S89AKGU-8B	ETC	获取价格	184pin Low Profile Registered DDR SDRAM MODULE
NT256D72S89B0G	ETC	获取价格	184 pin Unbuffered DDR DIMM
NT256S64V8HC0G	ETC	获取价格	32Mx64 bit Two Bank Unbuffered SDRAM Module
NT256S64V8HC0G-75B	ETC	获取价格	32Mx64 bit Two Bank Unbuffered SDRAM Module
NT256S64V8HC0G-7K	ETC	获取价格	32Mx64 bit Two Bank Unbuffered SDRAM Module
NT256S64V8HC0G-8B	ETC	获取价格	32Mx64 bit Two Bank Unbuffered SDRAM Module
NT256S72V89A0G	ETC	获取价格	32Mx72 bit One Bank Unbuffered SDRAM Module
NT256S72V89A0G-75B	ETC	获取价格	32Mx72 bit One Bank Unbuffered SDRAM Module
NT256S72V89A0G-7K	ETC	获取价格	32Mx72 bit One Bank Unbuffered SDRAM Module

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