参数资料
型号: IT80C51-12D
厂商: ATMEL CORP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP44
封装: 1 MM HEIGHT, QFP-44
文件页数: 81/109页
文件大小: 10824K
代理商: IT80C51-12D
59
ATtiny20 [DATASHEET]
8235E–AVR–03/2013
11.
8-bit Timer/Counter0 with PWM
11.1
Features
Two Independent Output Compare Units
Double Buffered Output Compare Registers
Clear Timer on Compare Match (Auto Reload)
Glitch Free, Phase Correct Pulse Width Modulator (PWM)
Variable PWM Period
Frequency Generator
Three Independent Interrupt Sources (TOV0, OCF0A, and OCF0B)
11.2
Overview
Timer/Counter0 is a general purpose 8-bit Timer/Counter module, with two independent Output Compare Units, and with
PWM support. It allows accurate program execution timing (event management) and wave generation.
Figure 11-1. 8-bit Timer/Counter Block Diagram
Clock Select
Timer/Counter
DA
T
A
B
U
S
OCRnA
OCRnB
=
TCNTn
Waveform
Generation
Waveform
Generation
OCnA
OCnB
=
Fixed
TOP
Value
Control Logic
= 0
TOP
BOTTOM
Count
Clear
Direction
TOVn
(Int.Req.)
OCnA
(Int.Req.)
OCnB
(Int.Req.)
TCCRnA
TCCRnB
Tn
Edge
Detector
( From Prescaler )
clk
Tn
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