HM628128BI Series
131,072-word × 8-bit High speed CMOS Static RAM
ADE-203-363A(Z)
Rev. 1.0
Apr. 28, 1995
The Hitachi HM628128BI is a CMOS static RAM organized 131,072-word × 8-bit. It realizes higher
density, higher performance and low power consumption by employing 0.8 µm Hi-CMOS shrink 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 or a 600-mil plastic DIP is available.
Features
• High speed
Fast access time: 85/100 ns (max)
• Low power
standby: 10 µW (typ)
Operation: 50 mW/MHz (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
• Operating temperature range
• –40 to +85°C
