ATxmega128D4-AU ATMEL [ATMEL Corporation], ATxmega128D4-AU Datasheet - Page 36

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ATxmega128D4-AU

Manufacturer Part Number
ATxmega128D4-AU
Description
8/16-bit Atmel XMEGA D4 Microcontroller
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet

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16. TC2 - Timer/Counter Type 2
16.1
16.2
8135L–AVR–06/12
Features
Overview
There are three Timer/Counter 2. These are realized when a Timer/Counter 0 is set in split
mode. It is then a system of two eight-bit timer/counters, each with four compare channels. This
results in eight configurable pulse width modulation (PWM) channels with individually controlled
duty cycles, and is intended for applications that require a high number of PWM channels.
The two eight-bit timer/counters in this system are referred to as the low-byte timer/counter and
high-byte timer/counter, respectively. The difference between them is that only the low-byte
timer/counter can be used to generate compare match interrupts and events. The two eight-bit
timer/counters have a shared clock source and separate period and compare settings. They can
be clocked and timed from the peripheral clock, with optional prescaling, or from the event sys-
tem. The counters are always counting down.
PORTC, PORTD and PORTE each has one Timer/Counter 2. Notation of these are TCC2
(Time/Counter C2), TCD2 and TCE2, respectively.
Six eight-bit timer/counters
Up to eight compare channels in each Timer/Counter 2
Waveform generation
Timer underflow interrupts/events
One compare match interrupt/event per compare channel for the low-byte timer/counter
Can be used with the event system for count control
– Three Low-byte timer/counter
– Three High-byte timer/counter
– Four compare channels for the low-byte timer/counter
– Four compare channels for the high-byte timer/counter
– Single slope pulse width modulation
XMEGA D4
36

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