M48T128Y M48T128V* 5.0 or 3.3V, 1 Mbit (128 Kb x 8.
ST Microelectronics
M48T128V - 1 Mbit (128 Kb x 8) TIMEKEEPER SRAM
M48T128Y M48T128V* 5.0 or 3.3V, 1 Mbit (128 Kb x 8) TIMEKEEPER® SRAM FEATURES SUMMARY ■ INTEGRATED, ULTRA LOW POWER SRAM, REAL TIME CLOCK, POWER-FAIL.