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參數(shù)資料
| 型號(hào)： | ATTINY2313 |
| 廠商： | Atmel Corp. |
| 元件分類(lèi)： | 8位微控制器 |
| 英文描述： | -bit AVR Microcontroller with 8K Bytes In- System Programmable Flash |
| 中文描述： | 位AVR微控制器具有8K字節(jié)的系統(tǒng)內(nèi)可編程閃存 |
| 文件頁(yè)數(shù)： | 186/226頁(yè) |
| 文件大?。?/td> | 3676K |
| 代理商： | ATTINY2313 |
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62
2543L–AVR–08/10
ATtiny2313
8-bit
Timer/Counter0
with PWM
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 man-
agement) and wave generation. The main features are:
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)
Overview
A simplified block diagram of the 8-bit Timer/Counter is shown in Figure 27. For the actual place-
ment of I/O pins, refer to “Pinout ATtiny2313” 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 loca-
tions are listed in the “8-bit Timer/Counter Register Description” on page 73.
Figure 27. 8-bit Timer/Counter Block Diagram
Registers
The Timer/Counter (TCNT0) and Output Compare Registers (OCR0A and OCR0B) 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 Inter-
rupt Mask Register (TIMSK). TIFR and TIMSK are not shown in the figure.
The Timer/Counter can be clocked internally, via the prescaler, or by an external clock source on
the T0 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 (clkT0).
The double buffered Output Compare Registers (OCR0A and OCR0B) is compared with the
Timer/Counter value at all times. The result of the compare can be used by the Waveform Gen-
erator to generate a PWM or variable frequency output on the Output Compare pins (OC0A and
OC0B). See “Output Compare Unit” on page 64. for details. The Compare Match event will also
set the Compare Flag (OCF0A or OCF0B) which can be used to generate an Output Compare
interrupt request.
Clock Select
Timer/Counter
DA
T
A
B
U
S
OCRnA
OCRnB
=
TCNTn
Waveform
Generation
Waveform
Generation
OCFnA
OCFnB
=
Fixed
TOP
Value
Control Logic
= 0
TOP
BOTTOM
Count
Clear
Direction
TOVn
(Int.Req.)
OCFnA
(Int.Req.)
OCFnB
(Int.Req.)
TCCRnA
TCCRnB
Tn
Edge
Detector
( From Prescaler )
clk
Tn
相關(guān)PDF資料 |
PDF描述 |
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| ATMEGA128 | -bit AVR Microcontroller with 8K Bytes In- System Programmable Flash |
| AT93C56AU3-10UI-1.8 | 3-wire Serial EEPROMs 2K (256 x 8 or 128 x 16) |
| AT93C56AU3-10UI-2.7 | 3-wire Serial EEPROMs 2K (256 x 8 or 128 x 16) |
| AT93C56AW-10SI-1.8 | 3-wire Serial EEPROMs 2K (256 x 8 or 128 x 16) |
| AT93C56AW-10SI-2.7 | 3-wire Serial EEPROMs 2K (256 x 8 or 128 x 16) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ATTINY2313_06 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit Microcontroller with 2K Bytes In-System Programmable Flash |
| ATTINY2313-16MI | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit AVR Microcontroller with 2K Bytes In-System Programmable Flash |
| ATTINY2313-16MJ | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit AVR Microcontroller with 2K Bytes In-System Programmable Flash |
| ATTINY2313-16PI | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit AVR Microcontroller with 2K Bytes In-System Programmable Flash |
| ATTINY2313-16PJ | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit AVR Microcontroller with 2K Bytes In-System Programmable Flash |
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