HM62W16256B Series

4 M SRAM (256-kword

× 16-bit)

ADE-203-934C (Z)

Rev. 2.0

Oct. 14, 1999

Description

The Hitachi HM62W16256B Series is 4-Mbit static RAM organized 262,144-word

× 16-bit. HM62W16256B

Series has realized higher density, higher performance and low power consumption by employing Hi-CMOS

process technology. It offers low power standby power dissipation; therefore, it is suitable for battery backup

systems. It is packaged in standard 44-pin plastic TSOPII.

Features

•

Single 3.3 V supply: 3.3 V

± 0.3 V

•

Fast access time: 55 ns/70 ns (max)

•

Power dissipation:

 Active: 9.9 mW (typ)

 Standby: 3.3 µW (typ)

•

Completely static memory.

 No clock or timing strobe required

•

Equal access and cycle times

•

Common data input and output.

 Three state output

•

Battery backup operation.

 2 chip selection for battery backup