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Dallas Semiconductor DS89C420

The Dallas Semiconductor DS89C420 is an 8051 based Ultra High-Speed Micro with 2 DPTRs, WDT, 2 Serial Ports, 32 I/O lines, 3 Timers/Counters, 13 Interrupts/3 Priority levels, 16K Bytes Flash, 256 Bytes On-chip RAM, 1K Bytes Additional XRAM. The DS89C420 has been obsoleted. For future designs select the DS89C430 (http://www.keil.com/dd/chip/3673.htm) which is a drop-in replacement that is feature compatible with the DS89C420.

*** EOL Notice ***
This device is no longer in production.

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Development Tools
Compiler, Assembler, Linker, Debugger
Data Sheets
Data Sheet for the Dallas Semiconductor DS89C420
Data Sheet
688,632 bytes
High-Speed User's Guide for the Dallas Semiconductor DS89C420
High-Speed User's Guide
6,850,603 bytes

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Header Files
Example Code
Evaluation Boards
Emulators
FLASH Utilities
Device Programmers
Real-Time OS
Simulated Features

The following on-chip peripherals are simulated by the Keil Software µVision Debugger.

The following on-chip peripherals are not simulated.

  • Flash
AGSI Drivers

The following AGSI Drivers are available for the Keil Software µVision Simulator.

AGDI Drivers

The following AGDI Drivers are available for the Keil Software µVision Debugger.

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