Tc - Timer/Counter; Overview; Features - Atmel SAM L22G Manual

35. TC – Timer/Counter
35.1.

Overview

There are up to four TC peripheral instances.
Each TC consists of a counter, a prescaler, compare/capture channels and control logic. The counter can
be set to count events, or clock pulses. The counter, together with the compare/capture channels, can be
configured to timestamp input events or IO pin edges, allowing for capturing of frequency and/or pulse
width.
A TC can also perform waveform generation, such as frequency generation and pulse-width modulation.
35.2.

Features

• Selectable configuration
– 8-, 16- or 32-bit TC operation, with compare/capture channels
• 2 compare/capture channels (CC) with:
– Double buffered timer period setting (in 8-bit mode only)
– Double buffered compare channel
• Waveform generation
– Frequency generation
– Single-slope pulse-width modulation
• Input capture
– Event / IO pin edge capture
– Frequency capture
– Pulse-width capture
– Time-stamp capture
• One input event
• Interrupts/output events on:
– Counter overflow/underflow
– Compare match or capture
• Internal prescaler
• DMA support
Atmel SAM L22G / L22J / L22N [DATASHEET]
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