3826A Datasheet, PDF (37/93 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

3826 Group (A version)
b7
b0
PWM control register
(PWMCON : address 002B16)
Count source selection bit
0 : f(XIN)
1 : f(XIN)/2
PWM0 function enable bit
0 : PWM0 disabled
1 : PWM0 enabled
PWM1 function enable bit
0 : PWM1 disabled
1 : PWM1 enabled
Not used (“0” at reading)
Fig. 36 Structure of PWM control register
A
B
PWM
stop
(internal)
T
T
PWM0 output ^Port
C
B
T
=
C
T2
stop
T2
Port
PWM1 output
Port
Port
PWM register
write signal
(Changes from “A” to “B” during “H” period)
PWM prescaler
write signal
(Changes from “T” to “T2” during PWM period)
PWM0 function
enable bit
PWM1 function
enable bit
When the contents of the PWM register or PWM prescaler have changed, the PWM
output will change from the next period after the change.
Fig. 37 PWM output timing when PWM register or PWM prescaler is changed
Rev.2.00 May. 24, 2006 page 37 of 90
REJ03B0028-0200