M30245_06 Datasheet, PDF (309/367 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/20 SERIES

M30245 Group
3. Timer A Applications
l = reload register content
FFFF16
(1) Timer A0 start count
(2) Timer A0 underflow
l
000016
n = reload register content
FFFF16
n
(3) Timer A1 start count
(4) Timer A1 stop count
Time
000116
Timer A0 count “1”
start flag
“0”
Timer A1 count “1”
start flag
“0”
PWM pulse output _{“H”}
from TA1OUT pin _{“L”}
Timer A0 interrupt “1”
request bit
“0”
Timer A1 interrupt “1”
request bit
“0”
Set to “1” by software
Set to “1” by software
1ms
500µs
Time
Cleared to “0” when interrupt request is accepted, or cleared by software
Cleared to “0” when interrupt request is accepted, or cleared by software
Figure 3.2.1. Operation timing of variable-period variable-duty PWM output
f1
Used for timer mode (Set to period)
f8
Timer A0
Timer A0 interrupt request bit
f32
fC32
Timer A1
Timer A1 interrupt request bit
Used for one-shot timer mode (Set to “H” width)
Figure 3.2.2. Connection diagram of variable-period variable-duty PWM output
Rev.2.00 Oct 16, 2006 page 300 of 354
REJ09B0340-0200