M48T59 M48T59Y/M48T59V 64 Kbit (8Kb x8) TIMEKEEPE.
STMicroelectronics
M48T59V - 64 Kbit (8 Kb x 8) TIMEKEEPER SRAM
M48T59 M48T59Y/M48T59V 64 Kbit (8Kb x8) TIMEKEEPER® SRAM PRELIMINARY DATA s INTEGRATED ULTRA LOW POWER SRAM, REAL TIME CLOCK, POWER-FAIL CONTROL CIR.