DESCRIPTION
The M48T02,12 TIMEKEEPER RAM is a 2K x 8 non-volatile static RAM and real time clock which is pin and functional compatible with the MK48T02,12.
■ INTEGRATED ULTRA LOW POWER SRAM,
REAL TIME CLOCK and POWER-FAIL
CONTROL CIRCUIT
■ BYTEWIDE RAM-LIKE CLOCK ACCESS
■ BCD CODED YEAR, MONTH, DAY, DATE,
HOURS, MINUTES and SECONDS
■ CLOCK ACCURACY of ± 1 MINUTE a
MONTH, @ 25°C
■ SOFTWARE CONTROLLED CLOCK
CALIBRATION for HIGH ACCURACY
APPLICATIONS
■ AUTOMATICPOWER-FAILCHIPDESELECTand
WRITE PROTECTION
■ CHOICE of TWO WRITE PROTECT
VOLTAGES:
– M48T02: 4.5V ≤ VPFD ≤ 4.75V
– M48T12: 4.2V ≤ VPFD ≤ 4.5V
■ SELF CONTAINED BATTERY and CRYSTAL
in the CAPHAT DIP PACKAGE
■ 10 YEARS of DATA RETENTION and CLOCK
OPERATION in the ABSENCE of POWER
■ PIN and FUNCTION COMPATIBLE with
JEDEC STANDARD 2K x 8 SRAMs