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T89C51RB2 - (T89C51RB2/RC2) 8-bit Microcontroller with 16 Kbytes/ 32 Kbytes FLASH

General Description

T89C51RB2/RC2 is a high-performance FLASH version of the 80C51 8-bit microcontrollers.

It contains a 16K or 32K byte Flash memory block for program and data.

The Flash memory can be programmed either in parallel mode or in serial mode with the ISP capability or with software.

Key Features

  • 80C52 Compatible.
  • 8051 Pin and Instruction Compatible.
  • Four 8-bit I/O Ports.
  • Three 16-bit timer/counters.
  • 256 Bytes Scratch Pad RAM.
  • 10 Interrupt Sources with 4 Priority Levels.
  • Dual Data Pointer Variable Length MOVX for slow RAM/Peripherals ISP (In-System Programming) using Standard VCC Power Supply Boot ROM Contains Low Level FLASH Programming Routines and a Default Serial Loader High-Speed Architecture.
  • 40 MHz in Standar.

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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
Features • 80C52 Compatible – 8051 Pin and Instruction Compatible – Four 8-bit I/O Ports – Three 16-bit timer/counters – 256 Bytes Scratch Pad RAM – 10 Interrupt Sources with 4 Priority Levels – Dual Data Pointer Variable Length MOVX for slow RAM/Peripherals ISP (In-System Programming) using Standard VCC Power Supply Boot ROM Contains Low Level FLASH Programming Routines and a Default Serial Loader High-Speed Architecture – 40 MHz in Standard Mode – 20 MHz in X2 Mode (6 clocks/machine cycle) 16K/32K Bytes on-chip FLASH Program/Data Memory – Byte and Page (128 Bytes) Erase and Write – 10k Write Cycles On-chip 1024 Bytes Expanded RAM (XRAM) – Software Selectable Size (0, 256, 512, 768, 1024 bytes) – 256 Bytes Selected at Reset for TS87C51RB2/RC2 Compatibility Keyboard Interrupt Interface on