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Looking for another register to store value other than RTC registers

Midhun
Associate II

Hi Team,

 we are using STM32 for our project there is a need of repeated reading and saving of values, for this purpose currently we are using RTC Backup registers.

RTC_BKP_DR0 0x00000000U
RTC_BKP_DR1 0x00000001U
RTC_BKP_DR2 0x00000002U
RTC_BKP_DR3 0x00000003U
RTC_BKP_DR4 0x00000004U

Each register can store 32 bit values all of them occupied and we need to store additional 24 bit.

Can you please help me to find similar registers to store this 24 bit data.

NB: Other than flash.

2 REPLIES 2
AScha.3
Chief

Hi,

STM32 -- which one ?

STM32L031  has eeprom area and 8K ram , for saving some values ->

 

AScha3_0-1704275832797.png

AScha3_1-1704276053109.png

+

AScha3_2-1704276256627.png

 

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Uwe Bonnes
Principal II

Some STM32 have an extra 4 k Ram block powered by the RTC supply. Or think about an external NVRAM.