M48T39Y Datasheet - STMicroelectronics

M48T39Y 256Kb (32K x 8) TIMEKEEPER SRAM

M48T39Y 256 Kb (32K x8) TIMEKEEPER® SRAM PRELIMINARY DATA s INTEGRATED ULTRA LOW POWER SRAM, REAL TIME CLOCK, POWER-FAIL CONTROL CIRCUIT, BATTERY and CRYSTAL s BCD CODED YEAR, MONTH, DAY, DATE, HOURS, MINUTES and SECONDS s AUTOMATIC POWER-FAIL CHIP DESELECT and WRITE PROTECTION s WRITE PROTECT VOLTAGE (VPFD = Power-fail Deselect Voltage): M48T39Y: 4.20V ≤ VPFD ≤ 4.50V s PROGRAMMABLE INTERRUPTS and SQUARE WAVE OUTPUT s WATCHDOG TIMER RESTARTS on OUT-OF-CONTROL PROCESSOR s CLOCK ACCURA.

M48T39Y Features

* include Programmable Alarms, Watchdog Timer and Interval

M48T39Y-STMicroelectronics.pdf