ATmega Timer/Counter/Prescaler Calculator

Calculate ATmega Timer/Counter and prescaler values directly on this page.

Timer/Counter0 (8 bit) and Timer/Counter1 (16 bit)

Clocks

Hz
Hz

Prescalers

Prescaler 1 8 64 256 1024
Decimal          
Hexadec.          
Error [%]          

Green - Timer/Counter0.
Blue - Timer/Counter1.
Red - Cannot be used.

Registers 

FOC0 WGM00 COM01 COM00 WGM01 CS02 CS01 CS00 TCCR0
                OCR0

COM1A1 COM1A0 COM1B1 COM1B0 FOC1A FOC1B WGM11 WGM10 TCCR1A
ICNC1 ICES1 - WGM13 WGM12 CS12 CS11 CS10 TCCR1B
                OCR1AH
                OCR1AL

OCIE2 TOIE2 TICIE1 OCIE1A OCIE1B TOIE1 OCIE0 TOIE0 TIMSK