Rainbow-electronics ATtiny2313 Manuale Utente Scaricare il pdf (Pagina 104)

104

ATtiny2313

2543A–AVR–08/03

Figure 50. Timer/Counter Timing Diagram, no Prescaling

Figure 51 shows the same timing data, but with the prescaler enabled.

Figure 51. Timer/Counter Timing Diagram, with Prescaler (f

clk_I/O

/8)

TOVn

(FPWM)

and ICFn

(if used

as TOP)

OCRnx

(Update at TOP)

TCNTn

(CTC and FPWM)

TCNTn

(PC and PFC PWM)

TOP - 1 TOP TOP - 1 TOP - 2

Old OCRnx Value

New OCRnx Value

TOP - 1 TOP BOTTOM BOTTOM + 1

clk

(clk

I/O

/1)

clk

I/O

TOVn

(FPWM)

and ICFn

(if used

as TOP)

OCRnx

(Update at TOP)

TCNTn

(CTC and FPWM)

TCNTn

(PC and PFC PWM)

TOP - 1

TOP TOP - 1 TOP - 2

Old OCRnx Value New OCRnx Value

TOP - 1 TOP BOTTOM BOTTOM + 1

clk

I/O

clk

(clk

I/O

/8)

1 2 ... 99 100 101 102 103 104 105 106 107 108 109 ... 210 211

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