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STM32L4 shutdown mode current consumption dependent on SYS_CLK

ASai.1
Associate

I am using the stm32L452RE Nucleo board and flashed the same with the shutdown mode example (default uses SYS_CLK = 80MHz) and observed the current consumption in shutdown mode to be in 500nA. But if the SYS_CLK is changed to 16MHz, 20MHz, 40MHz and flashed the current drawn is observed to be a constant 0.3 mA.

What might me the issue that is causing the shutdown mode to be dependent on SYS_CLK?

1 REPLY 1
Uwe Bonnes
Principal III

What example are you talking about?