Rainbow Electronics ATmega3290P_V - Manual (Page 143)

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
Tn
(clk
I/O
/8)
OCFnx
OCRnx
TCNTn
(CTC)
TOP
TOP - 1 TOP BOTTOM BOTTOM + 1
clk
I/O
clk
Tn
(clk
I/O
/8)