Datasheet> 器件分类 > 存储> 存储> HM5225645F-B60

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HM5225645F-B60: 产品描述256M LVTTL interface SDRAM 100 MHz 1-Mword x 64-bit x 4-bank/2-Mword x 32-bit x 4-bank PC/100 SDRAM; 产品类别存储存储; 文件大小81KB，共16页; 制造商Hitachi （Renesas ）; 官网地址http://www.renesas.com/eng/

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HM5225645F-B60概述

256M LVTTL interface SDRAM 100 MHz 1-Mword x 64-bit x 4-bank/2-Mword x 32-bit x 4-bank PC/100 SDRAM

HM5225645F-B60规格参数

参数名称	属性值
厂商名称	Hitachi （Renesas ）
包装说明	,
Reach Compliance Code	unknow

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HM5225645F-B60

HM5225325F-B60

256M LVTTL interface SDRAM

100 MHz

1-Mword

64-bit

4-bank/2-Mword

32-bit

4-bank

PC/100 SDRAM

ADE-203-1014C (Z)

Rev. 1.0

Oct. 1, 1999

Description

The Hitachi HM5225645F is a 256-Mbit SDRAM organized as 1048576-word

64-bit

4-bank. The Hitachi

HM5225325F is a 256-Mbit SDRAM organized as 2097152-word

32-bit

4-bank. All inputs and outputs

are referred to the rising edge of the clock input. It is packaged in standard 108 bump BGA.

Features

•

Single chip wide bit solution (× 64/× 32)

3.3 V power supply

Clock frequency: 100 MHz (max)

LVTTL interface

Extremely small foot print: 1.27 mm pitch



Package: BGA (BP-108)

4 banks can operate simultaneously and independently

Burst read/write operation and burst read/single write operation capability

Programmable burst length: 4/8/full page

2 variations of burst sequence



Sequential (BL = 4/8/full page)



Interleave (BL = 4/8)

Programmable

CAS

latency: 2/3

Byte control by DQMB

•

HM5225645F-B60相似产品对比

	HM5225645F-B60	HM5225325F-B60	HM5225645F
描述	256M LVTTL interface SDRAM 100 MHz 1-Mword x 64-bit x 4-bank/2-Mword x 32-bit x 4-bank PC/100 SDRAM	256M LVTTL interface SDRAM 100 MHz 1-Mword x 64-bit x 4-bank/2-Mword x 32-bit x 4-bank PC/100 SDRAM	256M LVTTL interface SDRAM 100 MHz 1-Mword x 64-bit x 4-bank/2-Mword x 32-bit x 4-bank PC/100 SDRAM

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