M48T58 M48T58Y 5.0 V, 64 Kbit (8 Kb x 8) TIMEKEEPE.
STMicroelectronics
M48T58Y - 64 Kbit (8 Kb x 8) TIMEKEEPER SRAM
M48T58 M48T58Y 5.0 V, 64 Kbit (8 Kb x 8) TIMEKEEPER® SRAM Features ■ Integrated, ultra low power SRAM, real-time clock, power-fail control circuit an.