DESCRIPTION
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.
   
■ 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
■ MICROPROCESSOR POWER-ON RESET
■ PROGRAMMABLE ALARM OUTPUT ACTIVE
    in the BATTERY BACKED-UP MODE
■ PACKAGING INCLUDES a 44-LEAD SOIC and
    SNAPHAT TOP (to be Ordered Separately)