描述 Description

32,768-word ×8-bit High Speed CMOS Static RAMThe Hitachi HM62256A 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 a 8 ×14 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. TSOP package is suitable for cards, and reverse type TSOP is also provided. It offers low power standby power dissipation; therefore, it is suitable for battery back up system.

特性 Features

? High speed: Fast Access time 85/100/120/150 ns (max)
? Low Power
? Standby: 5 μW (typ) (L/L-SL version)
? Operation: 40 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?