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Durability of 80-byte User Memory in Backup Domain of STM32F405

Question asked by Valkyrie-MT on Jul 22, 2012
Latest reply on Jul 24, 2012 by Valkyrie-MT

I have a small number of bytes (less than 80 bytes) that I need to store in persistent storage, but the values may change in excess of 10,000 times.  I believe the SRAM would work fine for this, but I would rather not use the extra battery power to maintain the SRAM if the 80-byte memory in the backup domain can handle the write frequency I anticipate.  What kind of memory is this 80-byte user memory?  What are the specs for number of writes?