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UPD17225 - 4-BIT SINGLE-CHIP MICROCONTROLLER

This page provides the datasheet information for the UPD17225, a member of the UPD 4-BIT SINGLE-CHIP MICROCONTROLLER family.

Datasheet Summary

Description

small general-purpose infrared remote control transmitters.

Features

  • Infrared remote controller carrier generator circuit (REM output).
  • 17K architecture: General-purpose register system.
  • Program memory (ROM), Data memory (RAM) µPD17225 Program memory (ROM) 4 K bytes (2048 × 16) Data memory (RAM) µPD17226 8 K bytes (4096 × 16) µPD17227 12 K bytes (6144 × 16) µPD17228 16 K bytes (8192 × 16) 111 × 4 bits 223 × 4 bits.
  • 8-bit timer : 1 channel.
  • Basic internal timer/Watchdog timer : 1 channel (WDOUT output).

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Datasheet preview – UPD17225

Datasheet Details

Part number UPD17225
Manufacturer NEC
File Size 393.41 KB
Description 4-BIT SINGLE-CHIP MICROCONTROLLER
Datasheet download datasheet UPD17225 Datasheet
Additional preview pages of the UPD17225 datasheet.

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Full PDF Text Transcription

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DATA SHEET MOS INTEGRATED CIRCUIT µPD17225, 17226, 17227, 17228 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER DESCRIPTION µPD17225, 17226, 17227, 17228 (hereafter called µPD17225 subseries) are 4-bit single-chip microcontrollers for small general-purpose infrared remote control transmitters. It employs a 17K architecture of general-purpose register type devices for the CPU, and can directly execute operations between memories instead of the conventional method of executing operations through the accumulator. Moreover, all the instructions are 16-bit 1-word instructions which can be programmed efficiently. In addition, a one-time PROM model, µPD17P218, to which data can be written only once, is also available.
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