Fujitsu FR81S User Manual
CHAPTER 17: PPG
5. Operation
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : PPG
FUJITSU SEMICONDUCTOR CONFIDENTIAL
FUJITSU SEMICONDUCTOR CONFIDENTIAL
50
5.7. Start Delay Mode Operation (PWM Normal Wave Form
Selected)
The Start Delay mode operation (PWM Normal Wave Form selected) is explained.
In the Start Delay operation, a valid edge of PPG waveform output is delayed for the Start Delay value
setting period. If the PPG output waveform selection bit (PCN.OWFS)="1" (Center Aligned Wave Form) is
selected, the delay value is doubling the set value of the Start Delay value setting register. Moreover, the
PWM operation, the one shot operation, Normal Wave Form, and Center Aligned Wave Form are supported.
setting period. If the PPG output waveform selection bit (PCN.OWFS)="1" (Center Aligned Wave Form) is
selected, the delay value is doubling the set value of the Start Delay value setting register. Moreover, the
PWM operation, the one shot operation, Normal Wave Form, and Center Aligned Wave Form are supported.
Figure 5-8 Example of Start Delay Operation (PWM Normal Wave Form Selected)
CNTE
Activation trigger
PSDR
0007
PCSR
8000
PDUT
0005
Buffer
(cycle value)
(cycle value)
8000
0005
Buffer
(duty value)
(duty value)
Down count value
(PTMR)
(PTMR)
8000
0005
0007
PPG pin output
Normal polarity
Inverted polarity
Interrupt factor
duty
cycle
Start Delay
Valid edge
Duty match
Counter borrow
Duty match
STRD
(1)
(2)
(3) Writing
(4) Start Delay enable
(5) Enable PPG operation
(6)
(7) Load
(8) down count
(9) Load
(11) match
(12) invertion
(14) borrow
(15) clear
(10) down count
(13) downcount
(16) Reload
(17)
MB91520 Series
MN705-00010-1v0-E
591