We are using the FSMC on the STM32F103 to drive a lc-display. To generate the Backlight PWM we like to use PD12 remapped to Timer4_Ch1. Now I have the problem that every time the fsmc sends data, a signal is on the PWM. I have found some information on Timer4 and FSMC in errata sheet, but only for Timer 4 channel 2. Is there a problem with Ch1?