Basic Bootloader for the AVR-DA Family

PublishTime：2021-10-27

This application note describes how the AVR-DA family of microcontrollers (MCUs) can use self-programming. This enables the user to download application code into Flash without the need for an external programmer. The example application is using the AVR128DA48 Curiosity Nano Board to communicate through the UART interface with a PC running a Python™ script.
To avoid transferring unuseful data, the current implementation includes a configuration section at the beginning of the image that will inform the bootloader about the features of the new image. Included in this information is the size of the code, so only the useful data will be transferred in the memory, thus significantly reducing the upload time.
The provided example bootloader application and Python™ scripts are suitable as starting points for custom bootloader applications.

Brand of Product：	Microchip
Part#：	AVR-DA Family 、 AVR-DA 、 AVR128DA28 、 AVR32DA28 、 AVR128DA32 、 AVR128DA48 、 AVR128DA64 、 AVR64DA32 、 AVR64DA48 、 AVR64DA64 、 AVR32DA32 、 AVR32DA48 More Part#
Product Category：	microcontrollers 、 MCUs More
Application：	More
Data Type：	Application note & Design Guide More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	2020
Version Number：
Data Encoding：	AN3341,DS00003341A
Data Size：	680 KB

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