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SUMMARY DESCRIPTION

The M48T35/Y TIMEKEEPER? RAM is a 32Kb x 8 non-volatile static RAM and real time clock. The monolithic chip is available in two special packages to provide a highly integrated battery backed-up memory and real time clock solution.

FEATURES SUMMARY

¡ö INTEGRATED, ULTRA LOW POWER SRAM, REAL TIME CLOCK, POWER-FAIL CONTROL CIRCUIT AND BATTERY

¡ö BYTEWIDE? RAM-LIKE CLOCK ACCESS

¡ö BCD CODED YEAR, MONTH, DAY, DATE, HOURS, MINUTES, AND SECONDS

¡ö FREQUENCY TEST OUTPUT FOR REAL TIME CLOCK

¡ö AUTOMATIC POWER-FAIL CHIP DESELECT AND WRITE PROTECTION

¡ö WRITE PROTECT VOLTAGES (VPFD = Power-fail Deselect Voltage):

¨C M48T35: VCC = 4.75 to 5.5V 4.5V ¡Ü VPFD ¡Ü 4.75V

¨C M48T35Y: VCC = 4.5 to 5.5V 4.2V ¡Ü VPFD ¡Ü 4.5V

¡ö SELF-CONTAINED BATTERY AND CRYSTAL IN THE CAPHAT? DIP PACKAGE

¡ö SOIC PACKAGE PROVIDES DIRECT CONNECTION FOR A SNAPHAT? HOUSING CONTAINING THE BATTERY AND CRYSTAL

¡ö SNAPHAT? HOUSING (BATTERY AND CRYSTAL) IS REPLACEABLE

¡ö PIN AND FUNCTION COMPATIBLE WITH JEDEC STANDARD 32 Kb x 8 SRAMs

¡ö RoHS COMPLIANCE

Lead-free components are compliant with the RoHS Directive.