Description
The Hitachi HM628512BI is a 4-Mbit static RAM organized 512-kword × 8-bit. HM628512BI Series has realized higher density, higher performance and low power consumption by employing Hi-CMOS process technology. The HM628512BI Series offers low power standby power dissipation; therefore, it is suitable for battery backup systems. It has packaged in 32-pin SOP, 32-pin TSOP II and 32-pin DIP.

FEATUREs
• Single 5 V supply
• Access time: 70/85 ns (max)
• Power dissipation
- Active: 50 mW/MHz (typ)
- Standby: 10 µW (typ)
• 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
• Battery backup operation
• Operating temperature: –40 to +85˚C