ATMEGA169 ATMEL [ATMEL Corporation], ATMEGA169 Datasheet - Page 116

• Manufacturer Part Number: ATMEGA169
• Description: 8-bit Microcontroller with 16K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

116
ATmega169/V
Figure 51. Timer/Counter Timing Diagram, no Prescaling
Figure 52 shows the same timing data, but with the prescaler enabled.
Figure 52. Timer/Counter Timing Diagram, with Prescaler (f
and ICF n
(PC and PFC PWM)
and ICFn
(CTC and FPWM)
TOVn
(Update at TOP)
(PC and PFC PWM)
TOVn
(CTC and FPWM)
(Update at TOP)
TCNTn
TCNTn
OCRnx
(clk
as TOP)
OCRnx
TCNTn
TCNTn
as TOP)
(clk
clk
clk
clk
clk
I/O
(FPWM)
I/O
(FPWM)
I/O
Tn
I/O
Tn
/8)
(if used
/1)
(if used
TOP - 1
TOP - 1
TOP - 1
TOP - 1
Old OCRnx Value
Old OCRnx Value
TOP
TOP
TOP
TOP
BOTTOM
BOTTOM
TOP - 1
TOP - 1
clk_I/O
New OCRnx Value
New OCRnx Value
/8)
BOTTOM + 1
BOTTOM + 1
2514P–AVR–07/06
TOP - 2
TOP - 2