HM624256A Overview
The Hitachi HM624256A is a high speed 1M Static RAM organized as 262,144-word × 4-bit. It realizes high speed access time (20/25/35 ns) and low power consumption, employing CMOS process technology and high speed circuit designing technology. It is most advantageous for the field where high speed and high density memory is required, such as the cache memory for main frame or 32-bit MPU.
HM624256A Key Features
- Single 5 V supply and high density 28-pin package (DIP and SOJ)
- High speed
- Low power dissipation
- pletely static memory No clock or timing strobe required
- Equal access and cycle time
- Directly TTL patible All inputs and outputs
- A17 I/O1
- I/O4 CS OE WE VCC VSS
- (3) Write cycle (1) Write cycle (2)