download ATMEL pdf datasheets USB DFU Bootloader Datasheet AT90USB128x AT90USB64x AT90USB162 AT90USB82 ATmega32U4 ATmega16U4

USB DFU
Bootloader
Datasheet
AT90USB128x
AT90USB64x
AT90USB162
AT90USB82
ATmega32U4
ATmega16U4

Features
昒SB Protocol
朆ased on the USB DFU class
朅utobaud (8/16 MHz crystal)
旾n-System Programming
朢ead/Write Flash and EEPROM on-chip memories
朢ead Device ID
朏ull chip Erase
朣tart application command
?In-Application Programming
朣oftware Entry-points for on-chip flash drivers

1. Description

The 8bits mega AVR with USB interface devices are factory configured with a
USB bootloader located in the on-chip flash boot section of the controller.
This USB bootloader allows to perform In-System Programming from an USB
host controller without removing the part from the system or without a
pre-programmed application, and without any external programming interface.
This document describes the USB bootloader functionalities as well as the serial
protocol to efficiently perform operations on the on chip Flash memories (Flash
and EEPROM).

Click here to download ATMEL pdf datasheets USB DFU Bootloader Datasheet AT90USB128x AT90USB64x AT90USB162 AT90USB82 ATmega32U4 ATmega16U4

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