Btw. typically LEDs are mounted this way pin --- LED --- resistor --- Vcc and are then switched on with cbi, not sbi. > > > <--MCUCR 90: 16 9a sbi 0x02, 6 ; 2 <--DDRE > > > OUT 92: 1e 9a sbi 0x03, 6 ; 3 <--LED ON