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AN1070/0102 1/10
AN1070
APPLICATION NOTE
ST7 CHECKSUM SELFCHECKING CAPABILITY
by Microcontroller Division Applications
INTRODUCTION
The goal of this application note is to present a software technique for determining if data and
program in FLASH have been corrupted and if so not to run the user program.
The program described in this application note has been written for the ST72F26x family
(ST72260G1, ST72262G1, ST72262G2, ST72264G1, ST72264G2) but can be extended to all
other ST7 MCUs.
You have to choose your device at the beginning of the program (several “#include” and “#de-
fine” statements are provided for this purpose). In this application, we chose to use a
ST72264G2.
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