ATA8743 ATMEL Corporation, ATA8743 Datasheet - Page 127
ATA8743
Manufacturer Part Number
ATA8743
Description
Manufacturer
ATMEL Corporation
Datasheet
1.ATA8743.pdf
(238 pages)
- Current page: 127 of 238
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9152A–INDCO–07/09
Figure 21-11. Timer/Counter Timing Diagram, Setting of OCF1x, with Prescaler (f
Figure 21-12 on page 127
using phase and 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 21-12. Timer/Counter Timing Diagram, no Prescaling
Figure 21-13 on page 128
(PC and PFC PWM)
and ICFn
(CTC and FPWM)
TCNTn
OCRnx
OCFnx
(clk
TOVn
(Update at TOP)
clk
clk
I/O
TCNTn
TCNTn
OCRnx
as TOP)
(clk
I/O
Tn
clk
clk
/8)
I/O
(FPWM)
I/O
Tn
/1)
(if used
OCRnx - 1
shows the same timing data, but with the prescaler enabled.
shows the count sequence close to TOP in various modes. When
TOP - 1
TOP - 1
Old OCRnx Value
OCRnx
OCRnx Value
TOP
TOP
OCRnx + 1
BOTTOM
TOP - 1
New OCRnx Value
OCRnx + 2
BOTTOM + 1
ATA8743
TOP - 2
clk_I/O
/8)
127
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