MSM58321 Datasheet PDF (REAL TIME CLOCK/CALENDAR)

MSM58321 - REAL TIME CLOCK/CALENDAR

Description

The MSM 58321 is a metal gate CMOS Real Time Clock/Calendar with a battery backup function for use in bus-oriented microprocessor applications.

The 4-bit bidirectional bus line method is used for the data I/O circuit; the clock is set, corrected, or read by accessing the memory.

Features

7 Function-Second, Minute, Hour, Day, Day-of-Week, Month, Year.
Automatic leap year calender.
12/24 hour format.
Frequency divider 5-poststage reset.
Reference signal output.
32.768 kHz crystal controlled operation Single 5V power supply Back-up battery operation to VDD = 2.2V Low power dissipation 90 µW max. at VDD = 3V 2.5 mW max. at VDD = 5V.
16 pin plastic DIP (DIP 16-P-300).

Datasheet Details

Part number	MSM58321
Manufacturer	OKI
File Size	121.85 KB
Description	REAL TIME CLOCK/CALENDAR
Datasheet	MSM58321 Datasheet
Additional preview pages of the MSM58321 datasheet.

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Full PDF Text Transcription

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¡ Semiconductor MSM58321 ¡ Semiconductor REAL TIME CLOCK/CALENDAR DESCRIPTION The MSM 58321 is a metal gate CMOS Real Time Clock/Calendar with a battery backup function for use in bus-oriented microprocessor applications. The 4-bit bidirectional bus line method is used for the data I/O circuit; the clock is set, corrected, or read by accessing the memory. MSM58321 The time is read with 4-bit DATA I/O, ADDRESS WRITE, READ, and BUSY; it is written with 4-bit DATA I/O, ADDRESS WRITE, WRITE, and BUSY. FEATURES • 7 Function-Second, Minute, Hour, Day, Day-of-Week, Month, Year • Automatic leap year calender • 12/24 hour format • Frequency divider 5-poststage reset • Reference signal output • • • • 32.

Published: Jul 1, 2005 |