MM58274C-12 Datasheet | National Semiconductor

MM58274C-12 Microprocessor patible Real Time Clock September 1990 MM58274C-12 Microprocessor patible Real Time Clock General Description The MM58274C-12 is fabricated using low threshold metal gate CMOS technology and is designed to operate in bus oriented microprocessor systems where a real time clock and calendar function are required The on-chip 32 768 kHz crystal controlled oscillator will maintain timekeeping down to 2 2V to allow low power standby battery operation This device is pin patible with the MM58174A but continues timekeeping up to tens of years Applications Y Point of sale terminals Y Teller terminals Y Word processors Y Data logging Y Industrial process...