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STM32F051R8 missing interrupt response

Question asked by frech.roland on Dec 16, 2012
Latest reply on Dec 21, 2012 by frech.roland
During programming trials on a STM32F051 discovery cardlet I found out that the TIM1 update interrupt does not work while using TIM1 channel 4 for PWM input signal evaluation. The update flag UIF is set, but no interrupt happens. Other interrupt events of TIM1 function correcly. I circumvented that problem by using the compare feature of a free channel of TIM1. Is this missing interrupt a design problem or a single failure on my specific chip?

Any help is appreciated.

Here are the specific F051 chip data:

GH221 W6
CHN GH 207