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ATMEGA640 датащи(PDF) 152 Page - Microchip Technology

номер детали ATMEGA640
подробное описание детали  8-bit Microcontroller with 16/32/64KB In-System Programmable Flash
PDF  436 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

ATMEGA640 датащи(HTML) 152 Page - Microchip Technology

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ATmega640/V-1280/V-1281/V-2560/V-2561/V [DATASHEET]
DS40002211A
17.10 Timer/Counter Timing Diagrams
The Timer/Counter is a synchronous design and the timer clock (clkTn) is therefore shown as a clock enable signal
in the following figures. The figures include information on when Interrupt Flags are set, and when the OCRnx Reg-
ister is updated with the OCRnx buffer value (only for modes utilizing double buffering). Figure 17-10 shows a
timing diagram for the setting of OCFnx.
Figure 17-10. Timer/Counter Timing Diagram, Setting of OCFnx, no Prescaling
Figure 17-11 shows the same timing data, but with the prescaler enabled.
Figure 17-11. Timer/Counter Timing Diagram, Setting of OCFnx, with Prescaler (fclk_I/O/8)
clk
Tn
(clk
I/O/1)
OCFnx
clk
I/O
OCRnx
TCNTn
OCRnx Value
OCRnx - 1
OCRnx
OCRnx + 1
OCRnx + 2
OCFnx
OCRnx
TCNTn
OCRnx Value
OCRnx - 1
OCRnx
OCRnx + 1
OCRnx + 2
clk
I/O
clk
Tn
(clk
I/O/8)



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