HM62864 Series

65536-word

× 8-bit High Speed CMOS Static RAM

ADE-203-255B (Z)

Rev. 2.0

Jul. 4, 1995

Description

The Hitachi HM62864 is a CMOS static RAM organized 64-kword

× 8-bit. It realizes higher density,

higher performance and low power consumption by employing 0.8

µm Hi-CMOS process technology. It

offers low power standby power dissipation; therefore, it is suitable for battery backup systems. The

device, packaged in a 525-mil SOP (460-mil body SOP) and a 8

× 20 mm TSOP with thickness of 1.2

mm, is available for high density mounting. TSOP package is suitable for cards.

Features

•

High speed

— Fast access time: 55/70/85 ns (max)

•

Low power

— Active: 50 mW (typ) (f = 1 MHz)

— Standby: 2

µW (typ)

•

Single 5 V supply

•

Completely static memory

No clock or timing strobe required

•

Equal access and cycle times

•

Common data input and output

Three state output

•

Directly TTL compatible

All inputs and outputs

•

Capability of battery backup operation

2 chip selection for battery backup