Release Note - AVR UC3 UART DFU ISP
___________________________________


Related deliverables:
--------------------
- this release note,
- the AVR UC3 UART Bootloader user guide,
- a binary of the bootloader (at32uc3l-uart-isp-x.y.z.bin) and a default
  configuration bin file (at32uc3l-uart-isp_cfg-x.y.z.dat) with two scripts to
  program them to UC3L (program_at32uc3l-uart-isp-x.y.z.cmd to use on a DOS
  command line and program_at32uc3l-uart-isp-x.y.z.sh to use on a unix-like
  command line).
- the AVR Software Framework: bootloader source code and helper files to be
  used by applications destined to be programmed through the bootloader.

1. Release History
__________________

Version 1.0.1 - 2010/09/13
--------------------------
 - Fix the bootloader to support the smallest device of the AVR UC3 L0 series (i.e. AT32UC3L016).

  Supported Devices:
  ------------------
  - AVR UC3 L0 rev. D and higher.

  Devices delivered with version 1.0.1:
  ------------------------------------
  - AVR UC3 L0 rev. E, binary generated with GCC.

  Features: Same as version 1.0.0 (see below).
  --------

  Known Bugs and Limitations:
  --------------------------
  - None

  Supported Tools:
  ---------------
  - AVR32 GNU Toolchain v2.4.2
  - IAR EW AVR32 3.30
  - FLIP::batchisp 3.4.2

  Footprint information:
  ---------------------
  - AT32UC3L/IAR/: 6172 Bytes
  - AT32UC3L/GCC/: 7356 Bytes


Version 1.0.0 - 2010/03/31
--------------------------
 - First release

  Supported Devices:
  ------------------
  - AVR UC3 L0 rev. D and higher.

  Devices delivered with version 1.0.0:
  ------------------------------------
  - None

  Features:
  --------
  - same feature set as the USB DFU Bootloaders:
    – Read/Write Flash on-Chip Memories
    – Read Device ID
    – Full-Chip Erase
    – Start Application Command
  - the last two words of the Flash user page are reserved for the bootloader
  - one baudrate supported: 115200 bps
  - Automatic detection of the UART used to communicate with the external programmer.
    This detection is performed over a pre-defined set of (USART_RX, USART_TX) pairs.
    Refer to the AVR UC3 UART bootloader datasheet for the definition of the
    pre-defined set of (USART_RX, USART_TX) pairs per UC3 devices.
  - AVR UC3 L0: No external oscillator required

  Known Bugs and Limitations:
  --------------------------
  - None

  Supported Tools:
  ---------------
  - AVR32 GNU Toolchain v2.4.2
  - IAR EW AVR32 3.30
  - FLIP::batchisp 3.4.2

  Footprint information:
  ---------------------
  Note: any build with Flash footprint over 8192Bytes is not usable (because the
  bootloader is meant to fit in 8kB).
  - AT32UC3L/IAR/: 6212 Bytes
  - AT32UC3L/GCC/: 7292 Bytes


2. Contact Information
______________________

Atmel Corporation: http://www.atmel.com.
Support and FAQ: http://support.atmel.no.


3. Legal Information
____________________

Copyright (c) 2010 Atmel Corporation. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.

3. The name of Atmel may not be used to endorse or promote products derived
from this software without specific prior written permission.

4. This software may only be redistributed and used in connection with an Atmel
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THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
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