M48T129Y M48T129V 5.0 or 3.3 V, 1 Mbit (128 Kbit .
STMicroelectronics
M48T129V - 1Mbit (128 Kbit x 8) TIMEKEEPER SRAM
M48T129Y M48T129V 5.0 or 3.3 V, 1 Mbit (128 Kbit x 8) TIMEKEEPER® SRAM Not recommended for new design Features ■ Integrated, ultra low power SRAM, .