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W78C51D - 8-BIT MICROCONTROLLER

This page provides the datasheet information for the W78C51D, a member of the W78 8-BIT MICROCONTROLLER family.

Datasheet Summary

Description

The W78C51D microcontroller supplies a wider frequency and supply voltage range than most 8-bit microcontrollers on the market.

It is compatible with the industry standard 80C51 microcontroller series.

Features

  • Fully static design.
  • Supply voltage of 4.5V to 5.5V.
  • DC-40 MHz operation.
  • 128 bytes of on-chip scratchpad RAM.
  • 4K bytes of on-chip mask ROM.
  • 64K bytes program memory address space.
  • 64K bytes data memory address space.
  • Four 8-bit bidirectional ports.
  • Two 16-bit timer/counters.
  • One full duplex serial port.
  • Seven-source, two-level interrupt capability.
  • One extra 4-bit bit-addressable I/O por.

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Datasheet preview – W78C51D

Datasheet Details

Part number W78C51D
Manufacturer Winbond
File Size 255.97 KB
Description 8-BIT MICROCONTROLLER
Datasheet download datasheet W78C51D Datasheet
Additional preview pages of the W78C51D datasheet.

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Full PDF Text Transcription

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Preliminary W78C51D 8-BIT MICROCONTROLLER GENERAL DESCRIPTION The W78C51D microcontroller supplies a wider frequency and supply voltage range than most 8-bit microcontrollers on the market. It is compatible with the industry standard 80C51 microcontroller series. The W78C51D contains four 8-bit bidirectional parallel ports, one extra 4-bit bit-addressable I/O port (Port 4) and two additional external interrupts ( INT2 , INT3 ), two 16-bit timer/counters, one watchdog timer and a serial port. These peripherals are supported by a seven-source, two-level interrupt capability. There are 128 bytes of RAM and an 4K byte mask ROM for application programs. The W78C51D microcontroller has two power reduction modes, idle mode and power-down mode, both of which are software selectable.
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