ATMEGA48V_06 ATMEL [ATMEL Corporation], ATMEGA48V_06 Datasheet - Page 128

• Manufacturer Part Number: ATMEGA48V_06
• Description: 8-bit Microcontroller with 8K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

128
ATmega48/88/168
Figure 14-11. Timer/Counter Timing Diagram, Setting of OCF1x, with Prescaler (f
Figure 14-12
frequency correct PWM mode the OCR1x Register is updated at BOTTOM. The timing diagrams
will be the same, but TOP should be replaced by BOTTOM, TOP-1 by BOTTOM+1 and so on.
The same renaming applies for modes that set the TOV1 Flag at BOTTOM.
Figure 14-12. Timer/Counter Timing Diagram, no Prescaling
Figure 14-13
(PC and PFC PWM)
and ICFn
(CTC and FPWM)
OCRnx
TCNTn
OCFnx
(clk
TOVn
(Update at TOP)
clk
clk
I/O
TCNTn
TCNTn
OCRnx
as TOP)
(clk
I/O
Tn
clk
clk
/8)
shows the count sequence close to TOP in various modes. When using phase and
I/O
shows the same timing data, but with the prescaler enabled.
(FPWM)
I/O
Tn
/1)
(if used
OCRnx - 1
TOP - 1
TOP - 1
Old OCRnx Value
OCRnx
OCRnx Value
TOP
TOP
OCRnx + 1
BOTTOM
TOP - 1
New OCRnx Value
OCRnx + 2
BOTTOM + 1
TOP - 2
clk_I/O
2545J–AVR–12/06
/8)