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MM58174A

Part Number	MM58174A
Manufacturer	National
Description	Microprocessor-Compatible Real-Time Clock
Published	May 9, 2005
Detailed Description	MM58174A Microprocessor-Compatible Real-Time Clock May 1991 MM58174A Microprocessor-Compatible Real-Time Clock General...
Datasheet	MM58174A PDF File

Overview

MM58174A Microprocessor-Compatible Real-Time Clock May 1991 MM58174A Microprocessor-Compatible Real-Time Clock General Description The MM58174A is a low-threshold metal-gate CMOS circuit that functions as a real-time clock and calendar in bus-oriented microprocessor systems The device includes an interrupt timer which may be programmed to one of three times Timekeeping is maintained down to 2 2V to allow low power standby battery operation The timebase is generated from a 32768 Hz crystal-controlled oscillator Y Y Y Y Y TTL compatible Low power standby operation (2 2V 10 mA) Low cost internally biased oscillator Low cost 16-pin dual-in-line package Available for commercial and military temperature ranges Applications Y Y Y Y Y Y Y Y Features Y Y Y Y Y Y Microprocessor compatible Tenths of seconds seconds tens of seconds minutes tens of minutes day of week days tens of days months tens of months independent registers Automatic leap year calculation Internal pull-ups to safeguard ...

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MM58174A Microprocessor-Compatible Real-Time Clock - National

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