The Hitachi HM628128A is a CMOS static RAM organized 128 kword × 8 bit. It realizes higher density, higher performance and low power consumption by employing 0.8 µm Hi-CMOS process technology.
●It offers low power standby power dissipation; therefore, it is suitable for battery back-up systems. The device, packaged in a 525-mil SOP (460-mil body SOP) or a 600-mil plastic DIP, or a 8 × 20 mm TSOP with thickness of 1.2 mm, is available for high density mounting. TSOP package is suitable for cards, and reverse type TSOP is also provided.
●Features
●• High speed
● — Fast access time: 55/70/85/100 ns (max)
●• Low power
● — Active: 75 mW (typ)
● — Standby: 10 µW (typ)
●• Single 5 V supply
●• 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
●• Capability of battery back up operation
● 2 chip selection for battery back up
