HM514260C Series

HM51S4260C Series

262,144-word

× 16-bit Dynamic Random Access Memory

ADE-203-260A (Z)

Rev. 1.0

Jun. 12, 1995

Description

The Hitachi HM51(S)4260C is CMOS dynamic RAM organized as 262,144-word

× 16-bit. HM51(S)4260C

has realized higher density, higher performance and various functions by employing 0.8

µm CMOS process

technology and some new CMOS circuit design technologies. The HM51(S)4260C offers fast page mode as a

high speed access mode. Multiplexed address input permits the HM51(S)4260C to be packaged in standard

400-mil 40-pin plastic SOJ and standard 400-mil 44-pin plastic TSOPII. Internal refresh timer enables

HM51S4260C self refresh operation.

Features

•

Single 5 V (

±10%) (HM51(S)4260C-6/7/8)

(

±5%) (HM51(S)4260C-6R)

•

High speed

— Access time: 60 ns/70 ns/80 ns (max)

•

Low power dissipation

— Active mode: 825 mW/788 mW/770 mW/688 mW (max)

— Standby mode: 11 mW (max) (HM51(S)4260C-6/7/8)

10.5 mW (max) (HM51(S)4260C-6R)

1.1 mW (max) (L-version) (HM51(S)4260C-6/7/8)

1.05 mW (max) (L-version) (HM51(S)4260C-6R)

•

Fast page mode capability

•

512 refresh cycles: 8 ms

128 ms (L-version)

•2 CAS-byte control

•

2 variations of refresh

— RAS-only refresh

— CAS-before-RAS refresh

•

Battery backup operation (L-version)

•

Self refresh operation (HM51S4260C)