描述 Description

The Hitachi HM62V16256C Series is 4-Mbit static RAM organized 262,144-word × 16-bit. HM62V16256C Series has realized higher density, higher performance and low power consumption by employing CMOS process technology (6-transistor memory cell). It offers low power standby power dissipation; therefore, it is suitable for battery backup systems. It is packaged in standard 44-pin plastic TSOPII.

特性 Features

? Single 2.5 V and 3.0 V supply: 2.2 V to 3.6 V

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

? Power dissipation:

- Active: 5.0 mW/MHz (typ)(VCC = 2.5 V) : 6.0 mW/MHz (typ) (VCC = 3.0 V)

- Standby: 2 μW (typ) (VCC = 2.5 V) : 2.4 μW (typ) (VCC = 3.0 V)

? 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