Datasheet

151
8021G–AVR–03/11
ATmega329P/3290P
Figure 17-9 shows the same timing data, but with the prescaler enabled.
Figure 17-9. Timer/Counter Timing Diagram, with Prescaler (f
clk_I/O
/8)
Figure 17-10 shows the setting of OCF2A in all modes except CTC mode.
Figure 17-10. Timer/Counter Timing Diagram, Setting of OCF2A, with Prescaler (f
clk_I/O
/8)
Figure 17-11 shows the setting of OCF2A and the clearing of TCNT2 in CTC mode.
TOVn
TCNTn
MAX - 1 MAX BOTTOM BOTTOM + 1
clk
I/O
clk
Tn
(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)