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