M48T212Y Datasheet - ST Microelectronics

M48T212Y 5V/3.3V TIMEKEEPER[ CONTROLLER

The M48T212Y/V are self-contained devices that include 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. Access to all TIMEKEEPER ® functions and the external RAM .

M48T212Y M48T212V 5V/3.3V TIMEKEEPER® CONTROLLER s CONVERTS LOW POWER SRAM into NVRAMs YEAR 2000 COMPLIANT (4-Digit Year) BATTERY LOW FLAG INTEGRATED REAL TIME CLOCK, POWER-FAIL CONTROL CIRCUIT, BATTERY and CRYSTAL AUTOMATIC POWER-FAIL CHIP DESELECT and WRITE PROTECTION WATCHDOG TIMER CHOICE of WRITE PROTECT VOLTAGES (VPFD = Power-fail Deselect Voltage): M48T212Y: 4.2V ≤ VPFD ≤ 4.5V M48T212V: 2.7V ≤ VPFD ≤ 3.0V s s s SNAPHAT (SH) Battery s 44 1 SOH44 (MH) s s s s MICR.

M48T212Y Features

* age VOH Battery Back-up VOUT Curren

M48T212Y_STMicroelectronics.pdf