Datasheet

30. TC – Timer/Counter

30.1 Overview

The TC consists of a counter, a prescaler, compare/capture channels and control logic. The counter can

be set to count events, or it can be configured to count clock pulses. The counter, together with the

compare/capture channels, can be configured to timestamp input events, allowing capture of frequency

and pulse width. It can also perform waveform generation, such as frequency generation and pulse-width

modulation (PWM).

30.2 Features

• Selectable configuration

– Up to five 16-bit Timer/Counters (TC), each configurable as:

• 8-bit TC with two compare/capture channels

• 16-bit TC with two compare/capture channels

• 32-bit TC with two compare/capture channels, by using two TCs

• Waveform generation

– Frequency generation

– Single-slope pulse-width modulation

• Input capture

– Event capture

– Frequency capture

– Pulse-width capture

• One input event

• Interrupts/output events on:

– Counter overflow/underflow

– Compare match or capture

• Internal prescaler

• Can be used with DMA and to trigger DMA transactions

SAM D21 Family

TC – Timer/Counter

Datasheet Complete

DS40001882D-page 662