描述 Description

The Hitachi HM628128DI Series is 1-Mbit static RAM organized 131,072-kword × 8-bit. HM628128DI Series has realized higher density, higher performance and low power consumption by employing Hi-CMOS process technology. The HM628128DI Series offers low power standby power dissipation; therefore, it is suitable for battery backup systems. It has package variations of standard 32-pin plastic DIP, standard 32-pin plastic SOP.

特性 Features

? Single 5 V supply: 5 V ± 10

? Access time: 70 ns (max)

? Power dissipation

- Active: 30 mW/MHz (typ)

- Standby: 10 μW (typ)

? 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

? Battery backup operation

- 2 chip selection for battery backup

? Temperature range: –40 to +85°C