Operation Of Ppg Timer; Pwm Operation; Fig. 13.2 Timing Of Disabling Pwm Operation Restart; Fig. 13.3 Timing Of Enabling Pwm Operation Restart - Fujitsu MB90420/5 (A) Series Hardware Manual

MB90420/5 (A) SERIES F

13.4 Operation of PPG Timer

The operation of the PPG timer is explained.

13.4.1 PWM Operation

At PWM operation, a continuous pulse can be output from detection of the start trigger. The cycle of the
output pulse is controlled by changing the PCSR value and the duty ratio is controlled by changing the PDUT
value.
n When restart disabled
Start trigger
m
n
O
PPG
(1) = T (n+1) µs
(2) = T (m+1) µs
n When restart enabled
Start trigger
m
n
o
PPG
2
MC-16LX FAMILY 16-BIT MICROCONTROLLERS HARDWARE MANUAL
Rising edge detected
(2)

Fig. 13.2 Timing of Disabling PWM Operation Restart

Rising edge detected

Fig. 13.3 Timing of Enabling PWM Operation Restart

(1)
T : Count clock cycle
m : PCSR value
n : PDUT value
Restart by trigger
(1)
(2)
13-10
Trigger ignored