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W78E54B - 8-BIT MTP MICROCONTROLLER

Description

The W78E54B is an 8-bit microcontroller which can accommodate a wider frequency range with low power consumption.

The instruction set for the W78E54B is fully compatible with the standard 8051.

Features

  • Fully static design 8-bit CMOS microcontroller.
  • Wide supply voltage of 4.5V to 5.5V.
  • 256 bytes of on-chip scratchpad RAM.
  • 16 KB electrically erasable/programmable MTP-ROM.
  • 64 KB program memory address space.
  • 64 KB data memory address space.
  • Four 8-bit bi-directional ports.
  • One extra 4-bit bit-addressable I/O port, additional INT2 / INT3 (available on 44-pin PLCC/QFP package).
  • Three 16-bit timer/counters.
  • O.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (W78E54B-Winbond.pdf) that lists specifications for multiple related part numbers.

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Full PDF Text Transcription

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W78E54B 8-BIT MTP MICROCONTROLLER GENERAL DESCRIPTION The W78E54B is an 8-bit microcontroller which can accommodate a wider frequency range with low power consumption. The instruction set for the W78E54B is fully compatible with the standard 8051. The W78E54B contains an 16K bytes MTP ROM (Multiple-Time Programmable ROM); a 256 bytes RAM; four 8-bit bi-directional and bit-addressable I/O ports; an additional 4-bit I/O port P4; three 16bit timer/counters; a hardware watchdog timer and a serial port. These peripherals are supported by eight sources two-level interrupt capability. To facilitate programming and verification, the MTP-ROM inside the W78E54B allows the program memory to be programmed and read electronically. Once the code is confirmed, the user can protect the code for security.
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