Rev.4287C–USB–11/04
USB
Microcontrollers
AT89C5131A
USB Bootloader
Features
Protocol
– USB Used as Physical Layer
– Device Firmware Upgrade Class Compliant
– USB Clock Auto-Configuration
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 (IAP)
– Read/Write Flash and EEPROM Memories
– Read Device ID
– Block Erase
– Read/Write Configuration Bytes
– Bootloader Start
Description
This document describes the USB bootloader functionalities as well as the USB proto-
col to efficiently perform operations on the on-chip Flash (EEPROM) memories.
Additional information on the AT89C5131A product can be found in the AT89C5131A
datasheet and the AT89C5131A errata sheet available on the Atmel web site.
The bootloader software package (binary) currently used for production is available
from the Atmel web site.
Bootloader Revision Purpose of Modifications Date
Revisions 1.0.2 (and above) First release 25/03/2003