M48T35AY M48T35AV 256 Kbit (32Kb x8) TIMEKEEPER® .
ST Microelectronics
M48T35AY - 256 Kbit 32Kb x8 TIMEKEEPER SRAM
M48T35AY M48T35AV 256 Kbit (32Kb x8) TIMEKEEPER® SRAM s INTEGRATED ULTRA LOW POWER SRAM, REAL TIME CLOCK, POWER-FAIL CONTROL CIRCUIT and BATTERY BYTE.