MM58167B Datasheet PDF (Microprocessor Real Time Clock)

MM58167B - Microprocessor Real Time Clock

Description

The MM58167B is a low threshold metal gate CMOS circuit that functions as a real time clock in bus oriented microprocessor systems The device includes an addressable real time counter 56 bits of RAM and two interrupt outputs A POWER DOWN input allows the chip to be disabled from the rest of the syst

Features

Y Y Y 56 bits of RAM with comparator to compare the real time counter to the RAM data 2.

Datasheet Details

Part number	MM58167B
Manufacturer	National
File Size	173.09 KB
Description	Microprocessor Real Time Clock
Datasheet	MM58167B Datasheet

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Full PDF Text Transcription

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MM58167B Microprocessor Real Time Clock October 1990 MM58167B Microprocessor Real Time Clock General Description The MM58167B is a low threshold metal gate CMOS circuit that functions as a real time clock in bus oriented microprocessor systems The device includes an addressable real time counter 56 bits of RAM and two interrupt outputs A POWER DOWN input allows the chip to be disabled from the rest of the system for standby low power operation The time base is a 32 768 kHz crystal oscillator Y Y Y Y Y Y Features Y Y Y 56 bits of RAM with comparator to compare the real time counter to the RAM data 2 INTERRUPT OUTPUTS with 8 possible interrupt signals POWER DOWN input that disables all inputs and outputs except for one of the interrupts Status bit to indicate rollover during a read 32

Published: May 9, 2005 |