About STC8A8K64S4A12EEPROM allocation

ena

About STC8A8K64S4A12EEPROM allocation [Copy link]

The manual says there is no dedicated EEPROIM space and it needs to be set manually. Is this implemented in the hardware?

The goal is to ensure that the data stored in the microcontroller remains valid even if the program is updated again.

gs001588

This is achievable. Try running the sample program and experience it.

I haven't actually used this MCU. For this type of MCU where Flash and EEPROM are mixed, generally speaking, the EEPROM will be reserved at the end of the Flash.

Flash involves sector erasure, which is done in sectors. Before erasing, the unmodified content needs to be read out and saved in RAM. This type of MCU has a feature that the RAM is relatively large, and the capacity of a sector will not affect other functions.

90houyidai

Actually, FLASH is used as eeprom, and the total amount of the two is fixed.

ena

90houyidai posted on 2021-11-9 11:40 In practice, FLASH is used as eeprom at the same time, and the total amount of the two is fixed

Well, but if you re-download the program, it should also fill the unused FALSH area with FF

90houyidai

ena posted on 2021-11-11 16:10 Well, but if you re-download the program, the unused FALSH area should also be filled with FF

stc-isp Check the option "Do not update hardware settings next time" to ensure that EEPROM data is not lost