2012-05-15 10:31 AM
I wonder if someone could help me.
I need to save, to retain ''some'' variables of my applications, but the 4Kbytes from the Backup registers is too few for what I need. So I would like to ask if there is another way to make this possible. I can't lost this information while the power is OFF. I would like to store it in the Flash memory when the power goes back, and reload this variables when the power turns on. But I think that in the instant that the powers goes back, it it too late to store my variables in Flash. Best regards, A.Paiva2012-05-16 04:48 AM
Thats o.k.. I assumed the slave uC had to do with the backup storage.
But as a side note - with a second controller, you pull in a much higher complexity, especially in keeping both uC's synchronious. Not to mention parallel debugging...2012-05-16 06:00 AM
''I told I must use an slave uC, only to have more peripherals for communication and get data.''
I suggest to use higher pin count STM32. This will be a better choice than compared to another MCU. Your software may anyway remain the same.2012-05-16 06:10 AM
WRONG, the number of erase cycles is about whatever tha datsheet states FRAM expensive? the FM25V02-GTR (32k*8) is about $3 Erik