Datasheet

19. TC2 - 8-bit Timer/Counter2 with PWM and Asynchronous Operation
19.1. Features
• Single Channel Counter
• Clear Timer on Compare Match (Auto Reload)
• Glitch-free, Phase Correct Pulse Width Modulator (PWM)
• Frequency Generator
• 10-bit Clock Prescaler
• Overflow and Compare Match Interrupt Sources (TOV2, OCF2A, and OCF2B)
• Allows Clocking from External 32kHz Watch Crystal Independent of the I/O Clock
19.2. Overview
Timer/Counter2 (TC2) is a general purpose, single channel, 8-bit Timer/Counter module.
A simplified block diagram of the 8-bit Timer/Counter is shown below. CPU accessible I/O Registers,
including I/O bits and I/O pins, are shown in bold. The device-specific I/O Register and bit locations are
listed in the following Register Description. For the actual placement of I/O pins, refer to the pinout
diagram.
The TC2 is enabled when the PRTIM2 bit in the Power Reduction Register (PRR.PRTIM2) is written to '1'.
Atmel ATmega644A [DATASHEET]
Atmel-42716C-ATmega644A_Datasheet_Complete-10/2016
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