Stand-alone use of STM32 CPU in STSPIN32F0

[Central SUPPORT]

We would like to use the embedded STM32 in the SPIN for calculation purposes if no Vm power supply voltage is available.

But datasheet is mentioning that Vdd < Vm. And the circuit diagram shows connections between Vdd, Vdda and internal 3.3V.

Question 1: Is it possible to use only Vdd and Vdda (both 3.3V) to run the chip ?

Question 2: Under this condition which max. input current we would have to expect if CPU runs in low power mode ?

NOTE: This question and answer originated from a customer support case which was handled by us. We regularly review support cases and add any helpful ones here for all to benefit from.

[Central SUPPORT · Accepted solution]

Question1: Is it possible to use only Vdd and Vdda (both 3.3V) to run the chip ?

Answer 1: Yes, you can but in this case you will not able to control the embedded gate driver.

Question 2: Under this condition which max. input current we would have to expect if CPU runs in low power mode ?

Answer 2: Current consumption in Standby mode will be around 125 uA.