stm32 lowpower run mode comsuption

[Staly.1]

debug a program in the sram, the current is 29 uA, how to down to 8uA or lower ?

i dont know how to disable flash/eeprom or other peripheral

[TDK]

There are hundreds of "stm32" chips. Be more specific.

[Staly.1]

hi TDK,

thank you for your reply, i used stm32l072rbt6

[Peter BENSCH]

There are a lot of things to influence the current consumption of an STM32. Unfortunately you didn't mention, which of the more than 1000 derivatives you are working with. But it looks like a STM32L0/STM32L1, because these are the only families providing native EEPROM.

Did you already read the application notes like AN4445 (for STM32L0), AN3193 (for STM32L15x) or AN4621 (for STM32L4)?

Some more hints:

• disable the clock of all peripherals not being in use
• use external crystal, as internal RC oscillators are drawing higher currents
• always optimize code for speed
• always use 32bit variables, even maybe only 8bit are used - it requires less statements to execute (=current)

Good luck!

/Peter

[Staly.1]

hi Peter,

thanks a lot for your reply, i 'm using stm32L072rbt6, setting msi as system clock(65k). i try to clear the bit about peripherals clock ​,it seems no effects. could i try to make the flash or eeprom sleep or other methods

[Staly.1]

hey , i try to powerdown the flash .it works and down to 10uA:D . thanks a lot