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UM8031 - Single Chip 8-Bit Microcomputer

Download the UM8031 datasheet PDF. This datasheet also covers the UM8051 variant, as both devices belong to the same single chip 8-bit microcomputer family and are provided as variant models within a single manufacturer datasheet.

General Description

The UM8051/8031 is a stand-alone, high-performance single-chip computer fabricated with UMC's highly-reliable +5 Volt, NMOS technology and packaged in a 40-pin DIP.

Key Features

  • 4K x BROM.
  • 128 x 8 RAM.
  • Four 8-bit ports, 32 I/O lines.
  • Two 16-bit timer/event counters.
  • High-performance full-duplex serial channel.
  • External memory expandable to 128K.
  • Boolean processor.
  • UM8048 architecture enhanced with:.
  • Non-paged jumps.
  • Direct addressing.
  • Four 8-register banks.
  • Stack depth up to 128 -bytes.
  • Multiply, divide, subtract, compare.
  • Most instructions exe.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (UM8051-UMC.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number UM8031
Manufacturer UMC
File Size 489.67 KB
Description Single Chip 8-Bit Microcomputer
Datasheet download datasheet UM8031 Datasheet

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Other Datasheets by UMC

Part Number Description
UM8035 Single Chip 8-Bit Microcomputer
UM8039 Single Chip 8-Bit Microcomputer
UM8048 Single Chip 8-Bit Microcomputer
UM8049 Single Chip 8-Bit Microcomputer
UM8051 Single Chip 8-Bit Microcomputer

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
eUMC UMBOS1 / UMB031 ======::::Single Chip 8-Bit Microcomputer Features • 4K x BROM • 128 x 8 RAM • Four 8-bit ports, 32 I/O lines • Two 16-bit timer/event counters • High-performance full-duplex serial channel • External memory expandable to 128K • Boolean processor • UM8048 architecture enhanced with: • Non-paged jumps • Direct addressing • Four 8-register banks • Stack depth up to 128 -bytes • Multiply, divide, subtract, compare • Most instructions execute in 1~s • 4~s multiply and divide General Description The UM8051/8031 is a stand-alone, high-performance single-chip computer fabricated with UMC's highly-reliable +5 Volt, NMOS technology and packaged in a 40-pin DIP. It provides the hardware features, architectural enhancements and new instructions that are necessary to make it a.