Functional Description[1]

The CY62256 is a high-performance CMOS static RAM organized as 32K words by 8 bits. Easy memory expansion is provided by an active LOW chip enable (CE) and active LOW output enable (OE) and three-state drivers. This device has an automatic power-down feature, reducing the power consumption by 99.9 when deselected.

Features

• Temperature Ranges

— Commercial: 0°C to 70°C

— Industrial: –40°C to 85°C

— Automotive: –40°C to 125°C

• High speed: 55 ns and 70 ns

• Voltage range: 4.5V–5.5V operation

• Low active power (70 ns, LL version, Com’l and Ind’l)

— 275 mW (max.)

• Low standby power (70 ns, LL version, Com’l and Ind’l)

— 28 µW (max.)

• Easy memory expansion with CE and OE features

• TTL-compatible inputs and outputs

• Automatic power-down when deselected

• CMOS for optimum speed/power

• Package available in a standard 450-mil-wide (300-mil

body width) 28-lead narrow SOIC, 28-lead TSOP-1,

28-lead reverse TSOP-1, and 600-mil 28-lead PDIP

packages

• Also available in Lead-free packages