STM32F030K6T6 persistent memory

[troy1818]

Posted on July 18, 2015 at 15:11

Hi,

I would like to know if I can use this MCU in order to store some bytes in persistent memory area. I took a quick look at the datasheet but I did not see anything. Anyone know the best way to save some bytes to be used at next boot ? Need extra eeprom chip ?Regards,StaringL

[Amel NASRI]

Posted on July 22, 2015 at 17:30

Hi rygelxvi,

May be you need to use the backup registers (RTC_BKPxR) that are implemented in the RTC domain and remain powered-on by VBAT when the VDD power is switched off.There are 5 x 32-bit backup registers.-Mayla-

[Tesla DeLorean]

Posted on July 22, 2015 at 17:38

With or without removing the power?

The SRAM retains over a simple reset.You could also journal a few entries in FLASH.

[troy1818]

Posted on July 23, 2015 at 21:05

Hi,

I would like to save about 350x8 bytes. The data must survive a power down - power up.Writing some page in flash would suffice I guess but I have never done this from runtime before. You have any examples of how this is done ?Regards,StaringL

[Tesla DeLorean]

Posted on July 23, 2015 at 21:17

I'm not using Cortex-M0 parts. I suspect it works like all the other STM32

STM32F0-Discovery_FW_V1.0.0\Project\Peripheral_Examples\Flash_Program\main.cIf it's data that changes a lot, FLASH is probably not the way to go, but for device/board specific calibration data it's quite usable.

[troy1818]

Posted on July 23, 2015 at 21:53

Hi Clive,

That is fantastic, thanks a lot !It is just configuration data at startup so flash is fine 🙂Regards,StaringL