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I'm using ATmega32. This two timers looks very similar. What is a difference between them? When should I use Timer0, and when Timer2?

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    \$\begingroup\$ Did you read the datasheet? There's a separate chapter for each timer. \$\endgroup\$ – Nick Alexeev Mar 3 '14 at 23:20
  • \$\begingroup\$ Probably one of the two can be routed to the UART peripheral. I didn't check the datasheet, but that is what I remember from a similar search a while ago. There are probably other similar differences. \$\endgroup\$ – jippie Mar 4 '14 at 6:32
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Timer2 is async timer. It means it can count when sleeping. But it's tricky to setup it when external clock is required. When external clock source is to be used a few pulses to setup it correctly is needed. I.e. it limits timer2 counter to be used as random pulse counter.

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