參數(shù)資料
型號: ATMEGA1284-PU
廠商: Atmel
文件頁數(shù): 15/160頁
文件大?。?/td> 0K
描述: IC MCU AVR 128K FLASH 40PDIP
產品培訓模塊: MCU Product Line Introduction
megaAVR Introduction
標準包裝: 10
系列: AVR® ATmega
核心處理器: AVR
芯體尺寸: 8-位
速度: 20MHz
連通性: I²C,SPI,UART/USART
外圍設備: 欠壓檢測/復位,POR,PWM,WDT
輸入/輸出數(shù): 32
程序存儲器容量: 128KB(64K x 16)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 4K x 8
RAM 容量: 16K x 8
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 5.5 V
數(shù)據(jù)轉換器: A/D 8x10b
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 40-DIP(0.600",15.24mm)
包裝: 管件
配用: ATSTK600-RC05-ND - STK600 ROUTING CARD AVR
111
8272E–AVR–04/2013
ATmega164A/PA/324A/PA/644A/PA/1284/P
16. 16-bit Timer/Counter1 and Timer/Counter3(1) with PWM
Note:
1. Timer/Counter3 is only available in ATmega1284/1284P
16.1
Features
True 16-bit design (that is, allows 16-bit PWM)
Two independent Output Compare units
Double Buffered Output Compare Registers
One Input Capture unit
Input Capture Noise Canceler
Clear Timer on Compare Match (Auto Reload)
Glitch-free, Phase Correct Pulse Width Modulator (PWM)
Variable PWM Period
Frequency Generator
External Event Counter
Four independent interrupt Sources (TOV1, OCF1A, OCF1B, and ICF1)
16.2
Overview
The 16-bit Timer/Counter unit allows accurate program execution timing (event management),
wave generation, and signal timing measurement.
Most register and bit references in this section are written in general form. A lower case “n”
replaces the Timer/Counter number, and a lower case “x” replaces the Output Compare unit
channel. However, when using the register or bit defines in a program, the precise form must be
used, that is, TCNT1 for accessing Timer/Counter1 counter value and so on.
A simplified block diagram of the 16-bit Timer/Counter is shown in Figure 16-1. For the actual
placement of I/O pins, see ”Pin configurations” on page 2. CPU accessible I/O Registers, includ-
ing I/O bits and I/O pins, are shown in bold. The device-specific I/O Register and bit locations
The PRTIM1 bit in ”PRR0 – Power Reduction Register 0” on page 48 must be written to zero to
enable Timer/Counter1 module.
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