ATtiny261A datasheet(104/292 Pages) ATMEL

Il numero della parte	ATtiny261A

Spiegazioni elettronici	8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash

PDF	292 Pages

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Produttore elettronici	ATMEL [ATMEL Corporation]

Homepage	http://www.atmel.com

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104 / 292 page

104

8197A–AVR–10/09

ATtiny261A/461A/861A

12.9 Timer/Counter Timing Diagrams

The Timer/Counter is a synchronous design and the timer clock (clkT1) is therefore shown as a

clock enable signal in the following figures. The figures include information on when Interrupt

Flags are set.

Figure 12-15 contains timing data for basic Timer/Counter operation. The figure shows the count

sequence close to the MAX value in all modes other than Phase and Frequency Correct PWM

Mode.

Figure 12-15. Timer/Counter Timing Diagram, no Prescaling

Figure 12-16 shows the same timing data, but with the prescaler enabled, in all modes other

than Phase and Frequency Correct PWM Mode.

Figure 12-16. Timer/Counter Timing Diagram, with Prescaler (fclkT1/8)

Figure 12-17 shows the setting of OCF1A, OCF1B and OCF1D in all modes.

Table 12-7.

Configuration of Output Compare Pins OC1D and OC1D in PWM6 Mode

COM1D1

COM1D0

OC1D Pin (PB4)

OC1D Pin (PB5)

Disconnected

01OC1A •

OC1OE4

OC1A •

OC1OE5

10OC1A •

OC1OE4

OC1A •

OC1OE5

11OC1A •

OC1OE4

OC1A •

OC1OE5

clk

(clk

PCK /1)

TOVn

clk

PCK

TCNTn

TOP - 1

TOP

BOTTOM

BOTTOM + 1

TOVn

TCNTn

TOP - 1

TOP

BOTTOM

BOTTOM + 1

clk

PCK

clk

(clk

PCK /8)

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