ATEMGA128-16AI View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
'ATEMGA128-16AI' PDF : 395 Pages View PDF
Figure 57. Timer/Counter Timing Diagram, no Prescaling
clkI/O
clkTn
(clkI/O/1)
TCNTn
(CTC and FPWM)
TCNTn
(PC and PFC PWM)
TOVn (FPWM)
and ICFn (if used
as TOP)
OCRnx
(Update at TOP)
TOP - 1
TOP - 1
TOP
TOP
Old OCRnx Value
BOTTOM
TOP - 1
BOTTOM + 1
TOP - 2
New OCRnx Value
Figure 58 shows the same timing data, but with the prescaler enabled.
Figure 58. Timer/Counter Timing Diagram, with Prescaler (fclk_I/O/8)
clkI/O
clkTn
(clkI/O/8)
TCNTn
(CTC and FPWM)
TCNTn
(PC and PFC PWM)
TOVn (FPWM)
and ICFn (if used
as TOP)
OCRnx
(Update at TOP)
TOP - 1
TOP - 1
TOP
TOP
Old OCRnx Value
BOTTOM
TOP - 1
BOTTOM + 1
TOP - 2
New OCRnx Value
132 ATmega128
2467O–AVR–10/06
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