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UPD754244 - 4-BIT SINGLE-CHIP MICROCONTROLLERS

Datasheet Summary

Description

The µ PD754244 is a 4-bit single-chip microcontroller which incorporates the EEPROMTM for key-less entry application.

Features

  • On-chip EEPROM: 16 × 8 bits (mapped to the data memory) On-chip key return reset function for key-less entry System clock oscillation circuit.
  • µ PD754144: RC oscillator (external resistor and capacitor).
  • µ PD754244: Crystal/ceramic oscillator Low-voltage operation: V DD = 1.8 to 6.0 V Timer function (4 channels).
  • Basic interval timer/watchdog timer: 1 channel.
  • 8-bit timer counter : 3 chan.

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Datasheet Details

Part number UPD754244
Manufacturer NEC
File Size 416.13 KB
Description 4-BIT SINGLE-CHIP MICROCONTROLLERS
Datasheet download datasheet UPD754244 Datasheet
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Full PDF Text Transcription

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DATA SHEET µPD754144, 754244 4-BIT SINGLE-CHIP MICROCONTROLLERS MOS INTEGRATED CIRCUIT DESCRIPTION The µ PD754244 is a 4-bit single-chip microcontroller which incorporates the EEPROMTM for key-less entry application. It incorporates a 16 × 8-bit EEPROM, a 4-Kbyte mask ROM to store software, a 128 × 4-bit RAM to store the processing data, a processing CPU, and a carrier generator which easily outputs waveforms for infrared remote controller. The details of functions are described in the following user’s manual. Be sure to read it before designing.
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