Thanks. That's unfortunate for me. But I am reading the datasheet and i think this behaviour can be controled with registers TCCR1X or so.So it should be possible acording to datasheet if i understand correct. But no success yet as it is quite complicated to read all these settings. So in general can i use some sort of hardware PWM on PB5 and digital out on PB4 at the same time on attiny861? assuming i know how to setup registers correctly?