AT89C51AC2_05 Datasheet, PDF (1/29 Pages) ATMEL Corporation – 80C51 Microcontrollers

Features
• Protocol
– UART Used as a Physical Layer
– Based on the Intel Hex-type Records
– Autobaud
• In-System Programming
– Read/Write Flash and EEPROM Memories
– Read Device ID
– Full-chip Erase
– Read/Write Configuration Bytes
– Security Setting From ISP Command
– Remote Application Start Command
• In-Application Programming/Self-Programming
– Read/Write Flash and EEPROM Memories
– Read Device ID
– Block Erase
– Read/Write Configuration Bytes
– Bootloader Start
Description
This document describes the UART bootloader functionalities as well as the serial
protocol to efficiently perform operations on the on chip Flash (EEPROM) memories.
Additional information on the A/T89C51AC2 product can be found in the
A/T89C51AC2 datasheet and the A/T89C51AC2 errata sheet available on the Atmel
web site, www.atmel.com.
The bootloader software package (source code and binary) currently used for produc-
tion is also available from the Atmel web site.
80C51
Microcontrollers
AT89C51AC2
T89C51AC2
UART
Bootloader
Bootloader Revision
Revision 1.2.0
Revisions 1.4.0 and higher
Purpose of Modifications
First release
New command supported
- EEPROM access
- Start application
- Extra Byte access
- 128 bytes page Flash programming
- New boot process
Date
23/04/2001
02/11/2001
Rev. 4231C–CAN–03/05
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