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1. Description
2. Related parts
3. Related items
Atmel AVR32806
2
devices with the USB feature are shipped with a USB boot loader.
®
Atmel AVR
UC3
This USB boot loader allows in-system programming (ISP) to be performed from a USB host
controller without removing the part from the system, without a preprogrammed application, and
without any external programming interface other than USB.
One boot loader is compiled for each AVR UC3 series. The default hardware I/O conditions
used to request the start of the ISP are also specific to each family.
The USB DFU boot loader, version 1.1.0, has the exact same set of features as the USB DFU
boot loader, versions 1.0.x. The difference is the implementation: Version 1.1.0 does not use
any general purpose fuse for configuration, and uses instead the last two words at the end of the
user page, while version 1.0.3 uses three general purpose fuses (GP29, GP30, and GP31) and
the last word at the end of the user page.
This document describes the USB boot loader functions and its use in various contexts.
This documentation applies to the following AVR UC3 parts:
•
Atmel AT32UC3C0512C,
•
Atmel AT32UC3C0256C,
•
Atmel AT32UC3C0128C,
•
Atmel AT32UC3C064C,
•
Atmel AT32UC3C1512C,
•
Atmel AT32UC3C1256C,
•
Atmel AT32UC3C1128C,
•
Atmel AT32UC3C164C,
•
Atmel AT32UC3C2512C,
•
Atmel AT32UC3C2256C,
•
Atmel AT32UC3C2128C,
•
Atmel AT32UC3C264C,
Note:
The list above is the list of
loader, version 1.1.0 or higher.
Note:
The Atmel AT32UC3A0/1, rev. H and higher, the Atmel AT32UC3B0/1, rev. F and higher, and
the Atmel AT32UC3A3, rev. E and higher, can operate with version 1.1.0 of the USB DFU
boot loader, but these devices are shipped preprogrammed with older versions of the boot
loader. For an accurate boot loader version per
the table of preprogrammed boot loader versions in
The boot loader is compiled for each
eral memory map. The functionality is the same among families.
•
Atmel AVR UC3 A0, A1 Series datasheet:
http://www.atmel.com/dyn/resources/prod_documents/doc32058.pdf
•
Atmel AVR UC3 B0, B1 Series datasheet:
http://www.atmel.com/dyn/resources/prod_documents/doc32059.pdf
rev. D and higher
rev. D and higher
rev. D and higher
rev. D and higher
rev. D and higher
rev. D and higher
rev. D and higher
rev. D and higher
rev. D and higher
rev. D and higher
rev. D and higher
rev. D and higher
devices shipped with a preprogrammed USB DFU boot
AVR UC3
family because of differences in the MCU periph-
AVR UC3
devices overview, please refer to
AVR UC3
devices in
AVR UC3
Section
32166A–AVR32806–06/11
8.2.
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