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W78C51D - 8-BIT MICROCONTROLLER

Download the W78C51D datasheet PDF. This datasheet also covers the W78 variant, as both devices belong to the same 8-bit microcontroller family and are provided as variant models within a single manufacturer datasheet.

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.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (W78-C51D.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number W78C51D
Manufacturer Winbond
File Size 255.97 KB
Description 8-BIT MICROCONTROLLER
Datasheet download datasheet W78C51D Datasheet

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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
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.