Datasheet

89
ATmega8515(L)
2512G–AVR–03/05
Figure 42. Timer/Counter Timing Diagram, with Prescaler (f
clk_I/O
/8)
Figure 43 shows the setting of OCF0 in all modes except CTC mode.
Figure 43. Timer/Counter Timing Diagram, Setting of OCF0, with Prescaler (f
clk_I/O
/8)
Figure 44 shows the setting of OCF0 and the clearing of TCNT0 in CTC mode.
Figure 44. Timer/Counter Timing Diagram, Clear Timer on Compare Match Mode, with
Prescaler (f
clk_I/O
/8)
TOVn
T
CNTn MAX - 1 MAX BOTTOM BOTTOM + 1
clk
I/O
clk
Tn
(clk
I/O
/8)
OCFn
OCRn
T
CNTn
OCRn Value
OCRn - 1 OCRn OCRn + 1 OCRn + 2
clk
I/O
clk
Tn
(clk
I/O
/8)
OCFn
OCRn
T
CNTn
(CTC)
TOP
TOP - 1 TOP BOTTOM BOTTOM + 1
clk
I/O
clk
Tn
(clk
I/O
/8)