W24257
GENERAL DESCRIPTION
32K × 8
CMOS STATIC RAM
The W24257 is a slow speed, low power
CMOS static RAM organized as 32768 × 8 bits that operates on a single 5-volt power supply.
This device is manufactured using Winbond's high performance
CMOS technology.
FEATURES
• Low power consumption: − Active: 325 mW (max.
) − Standby: 75 µW (max.
) (LL-version) 150 µW (max.
) (L-version)
• Access time: 70 nS (max.
) • Single +5V power supply • Fully static operation
PIN CONFIGURATIONS
• All inputs and outputs directly TTL compatible • Three-state outputs • Battery back-up operation capability • Data retention
voltage: 2V (min.
) • Packaged in 28-pin 330 mil SOP,
standard type one TSOP (8 mm x 13.
4 mm...