The T15M256B is a low power CMOS static RAM. organized as 32,768 x 8 bits that operates on a single 5-volt power supply. Low operating and standby current . Data retention is guaranteed at a power supply voltage as low as 1.5V. This device is packaged in a standard 28-pin DIP(600mil), SOJ, SOP, TSOP-I forward and reverse type.