Description
The Hitachi HM62V16256CI Series is 4-Mbit static RAM organized 262,144-word × 16-bit. HM62V16256CI Series has realized higher density, higher performance and low power consumption by employing CMOS process technology (6-transistor memory cell). It offers low power standby power dissipation; therefore, it is suitable for battery backup systems. It is packaged in standard 44-pin plastic TSOPII.

Features
• Single 2.5 V and 3.0 V supply: 2.2 V to 3.6 V
• Fast access time: 70 ns (max)
• Power dissipation:
    - Active: 5.0 mW/MHz (typ)(VCC = 2.5 V)
                : 6.0 mW/MHz (typ) (VCC = 3.0 V)
    - Standby: 2 µW (typ) (VCC = 2.5 V)
                   : 2.4 µW (typ) (VCC = 3.0 V)
• Completely static memory.
    - No clock or timing strobe required
• Equal access and cycle times
• Common data input and output.
    - Three state output
• Battery backup operation.
    - 2 chip selection for battery backup
• Temperature range: –40 to +85°C