M48T212A Datasheet - ST Microelectronics

M48T212A 3.3V TIMEKEEPER CONTROLLER

The M48T212A is a self-contained device that includes a real time clock (RTC), programmable alarms, a watchdog timer, and two external chip enable outputs which provide control of up to four (two in parallel) external low-power static RAMs. A built-in 32.768 kHz oscillator (external crystal controll.

M48T212A 3.3V TIMEKEEPER® CONTROLLER PRELIMINARY DATA s CONVERTS LOW POWER SRAM into NVRAMs YEAR 2000 COMPLIANT (4-Digit Year) USES SUPER CAPACITOR or LITHIUM BATTERY (User Supplied) BATTERY LOW FLAG INTEGRATED REAL TIME CLOCK, POWER-FAIL CONTROL CIRCUIT AUTOMATIC POWER-FAIL CHIP DESELECT and WRITE PROTECTION WATCHDOG TIMER WRITE PROTECT VOLTAGES (VPFD = Power-fail Deselect Voltage): M48T212A: 2.7V ≤ VPFD ≤ 3.0V MICROPROCESSOR POWER-ON RESET PROGRAMMABLE ALARM OUTPUT ACTIVE in the BAT.

M48T212A Features

* Timing EX tEXPD A tEXPD E1CON tAPD E2CON

M48T212A_STMicroelectronics.pdf