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參數(shù)資料
| 型號： | M308B8FCGP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, FLASH, 32 MHz, MICROCONTROLLER, PQFP144 |
| 封裝： | 20 X 20 MM, 0.50 MM PITCH, PLASTIC, LQFP-144 |
| 文件頁數(shù)： | 26/70頁 |
| 文件大?。?/td> | 1150K |
| 代理商： | M308B8FCGP |
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32
XMEGA D4 [DATASHEET]
8135P–AVR–01/2014
15.
TC0/1 – 16-bit Timer/Counter Type 0 and 1
15.1 Features
Four 16-bit timer/counters
Three timer/counters of type 0
One timer/counter of type 1
32-bit timer/counter support by cascading two timer/counters
Up to four compare or capture (CC) channels
Four CC channels for timer/counters of type 0
Two CC channels for timer/counters of type 1
Double buffered timer period setting
Double buffered capture or compare channels
Waveform generation:
Frequency generation
Single-slope pulse width modulation
Dual-slope pulse width modulation
Input capture:
Input capture with noise cancelling
Frequency capture
Pulse width capture
32-bit input capture
Timer overflow and error interrupts/events
One compare match or input capture interrupt/event per CC channel
Can be used with event system for:
Quadrature decoding
Count and direction control
Capture
High-resolution extension
Increases frequency and waveform resolution by 4x (2-bit) or 8x (3-bit)
Advanced waveform extension:
Low- and high-side output with programmable dead-time insertion (DTI)
Event controlled fault protection for safe disabling of drivers
15.2 Overview
Atmel AVR XMEGA devices have a set of four flexible 16-bit Timer/Counters (TC). Their capabilities include accurate
program execution timing, frequency and waveform generation, and input capture with time and frequency measurement
of digital signals. Two timer/counters can be cascaded to create a 32-bit timer/counter with optional 32-bit capture.
A timer/counter consists of a base counter and a set of compare or capture (CC) channels. The base counter can be
used to count clock cycles or events. It has direction control and period setting that can be used for timing. The CC
channels can be used together with the base counter to do compare match control, frequency generation, and pulse
width waveform modulation, as well as various input capture operations. A timer/counter can be configured for either
capture or compare functions, but cannot perform both at the same time.
A timer/counter can be clocked and timed from the peripheral clock with optional prescaling or from the event system.
The event system can also be used for direction control and capture trigger or to synchronize operations.
There are two differences between timer/counter type 0 and type 1. Timer/counter 0 has four CC channels, and
timer/counter 1 has two CC channels. All information related to CC channels 3 and 4 is valid only for timer/counter 0.
Only Timer/Counter 0 has the split mode feature that split it into two 8-bit Timer/Counters with four compare channels
each.
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