HM62W16256B Datasheet, PDF (1/16 Pages) Hitachi Semiconductor – 4 M SRAM (256-kword x 16-bit)

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