描述 Description

The Hitachi HM628512C is a 4-Mbit static RAM organized 512-kword × 8-bit. It realizes higher density, higher performance and low power consumption by employing Hi-CMOS process technology. The device, packaged in a 525-mil SOP (foot print pitch width) or 400-mil TSOP TYPE II or 600-mil plastic DIP, is available for high density mounting. The HM628512C is suitable for battery backup system.

特性 Features

? Single 5 V supply

? Access time: 55/70 ns (max)

? Power dissipation

- Active: 50 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 and outputs

? Battery backup operation