Functional Description
The CY7C197 is a high-performance CMOS static RAM organized as 256K words by 1 bit. Easy memory expansion is provided by an active LOW Chip Enable (CE) and three-state drivers. The CY7C197 has an automatic power-down feature, reducing the power consumption by 75% when deselected.

Features
• High speed
    — 12 ns
• CMOS for optimum speed/power
• Low active power
    — 880 mW
• Low standby power
    — 220 mW
• TTL-compatible inputs and outputs
• Automatic power-down when deselected