I am developing a product with a circuit using STM32L073RZT6. It is planned to be 3μA in the circuit design in STOP mode, but it can only drop to 40μA.

[YHara.1]

"When STOP mode is executed using the sample code of STM32CubeL0, the power consumption can be suppressed to 1 ~ 2uA, but it is the most consumed when the alarm and GPIO are enabled and the recovery from STOP mode is enabled. How can I reduce power consumption?

[Bubbles]

Hello @YHara.1​ ,

there can be several reasons for the increased consumption. Most common cause is that the debug interface remains active. By putting all unused GPIO, including debug interface, to analog state, the problem is usually solved. Check the PWR examples from the Cube package. AN4445 may also help.

Rgds,

J

[YHara.1]

Thank you for the immediate reply.

I will check it.

by Y.Hara​