STM32F0 SRAM DOUBT

[jmpo]

Posted on October 26, 2017 at 15:57

I'm using STM32F0 Discovery and need to store values in SRAM when MCU is powered off.

I already removed SB1 shunt. Then VBAT is not powered from VDD but pin3 of P1 (VBAT pin supplied with 3V).

When I turn off my STM23f0 device and turn on again the values are not stored.

It is possible to do this in this device?

If it is possible, someone can help me?

Thanks!

[Tesla DeLorean]

Posted on October 26, 2017 at 16:03

Look to see if there is some BKPRAM, or what remains powered in STANDBY mode...

[jmpo]

Posted on October 26, 2017 at 16:26

 ,

 ,

Thanks for your answer , ♯ Clive One.

 ,

 ,

There are only 5 backup registers, but I needed at least 6...

:(

 ,

 ,

I can't do this with this MCU.

[Tesla DeLorean]

Posted on October 26, 2017 at 17:11

The STM32F051 has 20-bytes of user space, perhaps you don't need the full 32-bit range for the data you want to store.

Might also want to consider the use of L0 or L4 series parts in new applications.

[Uwe Bonnes]

Posted on November 10, 2017 at 13:09

You can also think about some FRAM/MRAM  attached via I2C