Resolved! STM32U595 used PA11 and PA12 as gpio
I used PA11 and PA12 as standard GPIO in STM32U595ZJT6Q and system frequency is 4MHz. Config PA11 and PA12 to PP output mode ,no pull up.Don't set this gpios to high, the mini system current is 3mA,but set this gpios to high, the current is 22mA.Test...