DS89C420-QCL Datasheet, PDF (4/139 Pages) Maxim Integrated Products – Ultra-High-Speed Flash Microcontroller User’s Guide

Ultra-High-Speed Flash
Microcontroller User’s Guide
SECTION 11: PROGRAMMABLE TIMERS
16-Bit Timers
Timer 0, Timer 1 Modes
Mode 0
Mode 1
Mode 2
Mode 3
Timer 2 Modes
Watchdog Timer
SECTION 12: SERIAL I/O
Serial Mode Summary
Mode 0
Mode 1
Mode 2
Mode 3
Serial Port Initialization
Baud Rates
Serial I/O Description
Framing Error Detection
Multiprocessor Communication
SECTION 13: TIMED-ACCESS PROTECTION
Protected Bits
Protection Scheme
Valid Timed-Access Procedure
Invalid Timed-Access Procedure
Timed-Access Protects Watchdog
SECTION 14: INSTRUCTION SET DETAILS
SECTION 15: PROGRAM LOADING
ROM Loader Mode
AutoBaud-Rate Detection
Command Line Interface
Command Line Syntax
Command Summaries
Error Messages
Parallel Programming Mode
User Code In-Application Programming Mode
REVISION HISTORY
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