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STM32f4 internal pull down, external pull up

Question asked by Tom on Jun 25, 2014
Latest reply on Jun 26, 2014 by John F.

I'm using an STM32F4 and have configured IOs as pwm outputs with internal pull down. These pins have been connected to an input of another chip which has a 5V pull up on its inputs. 

After some time the processor broke down. May this be the issue? I'm not quite sure I understand why, but I highly suspect this since its the only thing that was connected.