Description
The Hitachi HM62256B is a CMOS static RAM organized 32-kword ×8-bit. It realizes higher performance and low power consumption by employing 0.8 µm Hi-CMOS process technology. The device, packaged in 8 ×14 mm TSOP, 8 ×13.4 mm TSOP with thickness of 1.2 mm, 450-mil SOP (foot print pitch width), 600-mil plastic DIP, or 300-mil plastic DIP, is available for high density mounting. It offers low power standby power dissipation; therefore, it is suitable for battery back-up systems.

FEATUREs
• High speed
  Fast access time: 45/55/70/85 ns (max)
• Low power
  Standby: 1.0 µW (typ)
  Operation: 25 mW (typ) (f = 1 MHz)
• 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