Renesas R8C/20 User Manual

R8C/20 Group, R8C/21 Group 14. Timers
Rev.2.00 Aug 27, 2008 Page 212 of 458
REJ09B0250-0200
Figure 14.75 Operating Example of PWM Mode (Duty 0%, Duty 100%)
m
p
q
Value in TRDi register
n
m: Setting value in TRDGRAi register
Set to 0 by a program
Rewrite by a program
0000h
q
Duty 0 %
TRDGRBi register
IMFA bit in
TRDSRi register
1
0
IMFB bit in
TRDSRi register
1
0
TSTARTi bit in
TRDSTR register
TRDIOBi output
p (p > m)n
Since the compare match in the TRDGRBi register is
not generated, “L” is not applied to TRDIOBi output
1
0
m
p
Value in TRDi register
n
0000h
TRDGRBi register
IMFA bit in
TRDSRi register
1
0
IMFB bit in
TRDSRi register
1
0
TSTARTi bit in
TRDSTR register
TRDIOBi output
pn
1
0
“L” is applied to TRDIOBi output by the compare
match in the TRDGRBi register with no change.
m
i = 0 or 1
The above applies to the following conditions:
The EBi bit in the TRDOER1 register is set to 0. (Enable TRDIOBi output.)
The POLB bit in the TRDPOCRi register is set to 0. (active level “L”)
Rewrite by a program
Set to 0 by a program
Set to 0 by a program
When the compare matches in the TRDGRAi and TRDGRBi registers are generated
simultaneously, the compare match in the TRDGRBi register has a priority.
“L” is applied to TRDIOBi output without any change.
Duty 100 %
Set to 0 by a program

Renesas R8C/20 Specifications

General

Brand	Renesas
Model	R8C/20
Category	Control Unit
Language	English