Datasheet

21. TC2 - 8-bit Timer/Counter2 with PWM and Asynchronous Operation

21.1 Features

• 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 32 kHz Watch Crystal Independent of the I/O Clock

21.2 Overview

Timer/Counter2 (TC2) is a general purpose, 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 (PRR0.PRTIM2) is written to

'1'.

ATmega328PB

TC2 - 8-bit Timer/Counter2 with PWM and Asynchrono...

Datasheet Complete

DS40001906C-page 218