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MSM62X42B Datasheet REAL TIME CLOCK IC

Manufacturer: OKI Electric

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General Description

The MSM62X42B is a bus-connection Microcomputer peripheral IC of a Real Time Clock with built-in crystal in the perpetual calendar which can be read and written from a second unit.

The interface between this IC and a microcomputer uses 4 data buses, 4 address buses, 3 control buses and 2 chip selects and carries out setting up, amending and reading time.

ALE input is available for 8048 system, 8051 system or 8085 system and is used for other microcomputers if this input is fixed at "H".

Overview

www.DataSheet4U.com ¡ Semiconductor MSM62X42B ¡ Semiconductor REAL TIME CLOCK IC WITH BUILT-IN.

Key Features

  • 32.768kHz built-in crystal oscillator (2 ranks of ± 10PPM and ± 50PPM --DIP) (2 ranks of ± 20PPM and ± 50PPM --SOP).
  • Real time clock of second, minute, date, month, year and day of week.
  • Interface corresponding to microcomputer bus.
  • 30-second compensation controlled by software.
  • Periodical interrupt function (or periodical waveform output) for alarm.
  • STOP/START function for clock.
  • 12/24 hour selectable.
  • AEL input for 8048 s.

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