STM32L432KC Core Bug ?

[JLiao]

Dear All,

Do you find any VSSA (VRef-) pinout on the STM32L432 32QFN ?

The Analog Input never stable !!

when PA_1 NC, PA_0 result:

0V = 7FFH

3.3v = FFFH

when PA_1 to GND, PA_0 result:

0V = 0H

3.3v = FFFH

when PA_1 to 3.3V, PA_0 become floating....

I can not find Vref-, and also guess the Vres- no connect to GND internal.

Any solution ?

Thanks,