Rainbow-electronics ATmega3290P_V Manuale Utente Scaricare il pdf (Pagina 143)

100

101

143

ATmega329/3290/649/6490

2552H–AVR–11/06

Figure 63. Timer/Counter Timing Diagram, Setting of OCF2A, with Prescaler (f

clk_I/O

/8)

Figure 64 shows the setting of OCF2A and the clearing of TCNT2 in CTC mode.

Figure 64. Timer/Counter Timing Diagram, Clear Timer on Compare Match mode, with

Prescaler (f

clk_I/O

/8)

OCFnx

OCRnx

TCNTn

OCRnx Value

OCRnx - 1 OCRnx OCRnx + 1 OCRnx + 2

clk

I/O

clk

(clk

I/O

/8)

OCFnx

OCRnx

TCNTn

(CTC)

TOP

TOP - 1 TOP BOTTOM BOTTOM + 1

clk

I/O

clk

(clk

I/O

/8)

1 2 ... 138 139 140 141 142 143 144 145 146 147 148 ... 374 375

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