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MFG:OKI  Package Cooled:DIP  

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Part Number: MSM62X42B

 

MFG: OKI

Package Cooled: DIP

 

Description: The MSM62X42B is a bus-connection Microcomputer peripheral IC of a Real Time Clock with built-in crystal in the perpetu...


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MSM62X42B 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". The clock function provides seconds, minutes, hours, day of week, date, month, year, 12/24 hour selectable, automatic leap year in the Christian Era and 30-second compensation controlled by software.  The periodical interrupt function (or periodical waveform output) and the STOP/START function of the clock are also provided.  The device is a silicon gate CMOS and the current consumption is low.  The built-in crystal oscillator is 32.768 kHz and battery backup operation is considered.

MSM62X42B Maximum Ratings

Parameter Symbol Conditions Rating Unit
Power supply voltage VDD Ta = 25° 0.3 to 7 V
Input voltage VI   -03 to VDD +0.3 V
Output voltage Vo   -03 to VDD +0.3 V
Storage temperature TSTG - 55 to +85 °C
Soldering conditions (lead) TSOL - Temp.:under 260°C
Time :within 10 seconds		  

MSM62X42B 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 microcom- puter 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 system, 8051 system or 8085 system (when a microcomputer does not provide the ALE
   output, fix the AEL input at "H".)
* Low current consumption for CMOS device
* Low STANDBY voltage and small STANDBY current
* 18-pin plastic DIP(DIP18-P-300)
* 24-pin plastic SOP  

MSM62X42B Connection Diagram

MSM62X42B Connection Diagram

MSM62X42B datasheet

MSM62X42B
PDF/DataSheet Download

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