收藏本站
ATmega128
8-bit
Timer/Counter2
with PWM
Overview
Timer/Counter2 is a general purpose, single channel, 8-bit Timer/Counter module. The main
features are:
? Single Channel Counter
? Clear Timer on Compare Match (Auto Reload)
? Glitch-free, Phase Correct Pulse width Modulator (PWM)
? Frequency Generator
? External Event Counter
? 10-bit Clock Prescaler
? Overflow and Compare Match Interrupt Sources (TOV2 and OCF2)
A simplified block diagram of the 8-bit Timer/Counter is shown in Figure 61 . For the actual place-
ment of I/O pins, refer to “Pin Configurations” on page 2 . CPU accessible I/O registers, including
I/O bits and I/O pins, are shown in bold. The device-specific I/O register and bit locations are
listed in the “8-bit Timer/Counter Register Description” on page 156 .
Figure 61. 8-Bit Timer/Counter Block Diagram
TCCRn
count
TOVn
clear
direction
Control Logic
clk Tn
Clock Select
(Int.Req.)
Edge
Detector
Tn
BOTTOM
TOP
( From Prescaler )
Timer/Counter
TCNTn
=0
= 0xFF
OCn
(Int.Req.)
=
OCRn
Waveform
Generation
OCn
Registers
The Timer/Counter (TCNT2) and Output Compare Register (OCR2) are 8-bit registers. Interrupt
request (abbreviated to Int.Req. in the figure) signals are all visible in the Timer Interrupt Flag
Register (TIFR). All interrupts are individually masked with the Timer Interrupt Mask Register
(TIMSK). TIFR and TIMSK are not shown in the figure since these registers are shared by other
timer units.
The Timer/Counter can be clocked internally, via the prescaler, or by an external clock source on
the T2 pin. The Clock Select logic block controls which clock source and edge the Timer/Counter
uses to increment (or decrement) its value. The Timer/Counter is inactive when no clock source
is selected. The output from the clock select logic is referred to as the timer clock (clk T2 ).
145
2467X–AVR–06/11
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
ATMEGA64RZAPV-10AU BUNDLE ATMEGA644P/AT86RF230 TQFP
ATP101-TL-H MOSFET P-CH 30V 25A ATPAK
ATP102-TL-H MOSFET P-CH 30V 40A ATPAK
ATP103-TL-H MOSFET P-CH 30V 55A ATPAK
ATP104-TL-H MOSFET P-CH 30V 75A ATPAK
ATP106-TL-H MOSFET P-CH 40V 30A ATPAK
ATP107-TL-H MOSFET P-CH 40V 50A ATPAK
ATP108-TL-H MOSFET P-CH 40V 70A ATPAK
相关代理商/技术参数
ATMEGA128RFA1-ZUR SL514 制造商:Atmel Corporation 功能描述:
ATMEGA128RFA1-ZUR00 制造商:Atmel Corporation 功能描述:2.4GHZ 802.15.4 128K SOC REVF 制造商:Atmel Corporation 功能描述:2.4GHZ 802.15.4 128K SOC REVF T&R - Bulk 制造商:Atmel from Components Direct 功能描述:ATMEL ATMEGA128RFA1-ZUR00 MICROCONTROLLERS (MCU) 制造商:Atmel 功能描述:Atmel ATMEGA128RFA1-ZUR00 Microcontrollers (MCU) 制造商:Atmel Corporation 功能描述:MCU AVR 2.4GHZ 128K FLASH 64VQFN 制造商:Atmel Corporation 功能描述:2.4GHZ 802.15.4 128K SOC Revision F 制造商:Atmel 功能描述:2.4GHZ 802.15.4 128K SOC REVF
ATMEGA128RFR2-ZF 功能描述:IC RF TXRX+MCU 802.15.4 64-VFQFN 制造商:microchip technology 系列:- 包装:托盘 零件状态:在售 类型:TxRx + MCU 射频系列/标准:802.15.4 协议:Zigbee? 调制:DSSS， O-QPSK 频率:2.4GHz 数据速率（最大值）:2Mbps 功率 - 输出:3.5dBm 灵敏度:-100dBm 存储容量:128kB 闪存，4kB EEPROM，16kB SRAM 串行接口:I2C，JTAG，SPI，USART GPIO:35 电压 - 电源:1.8 V ~ 3.6 V 电流 - 接收:5mA ~ 12.5mA 电流 - 传输:8mA ~ 14.5mA 工作温度:-40°C ~ 125°C 封装/外壳:64-VFQFN 裸露焊盘 标准包装:260
ATMEGA128RFR2-ZFR
ATMEGA128RFR2-ZU 制造商:Atmel Corporation 功能描述:2.4GHZ 802.15.4 128K SOC IND 85C - Bulk
ATMEGA128RFR2-ZUR 制造商:Atmel Corporation 功能描述:2.4GHZ 802.15.4 128K SOC 85C T&R - Tape and Reel
ATMEGA128RZAV-8AU 功能描述:射频微控制器 - MCU AVR Z-Link Bundle RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:Si100x 数据总线宽度:8 bit 最大时钟频率:24 MHz 程序存储器大小:64 KB 数据 RAM 大小:4 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LGA-42 安装风格:SMD/SMT 封装:Tube
ATMEGA128RZAV-8MU 功能描述:射频微控制器 - MCU AVR Z-Link Bundle RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:Si100x 数据总线宽度:8 bit 最大时钟频率:24 MHz 程序存储器大小:64 KB 数据 RAM 大小:4 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LGA-42 安装风格:SMD/SMT 封装:Tube