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R8C/18 Group, R8C/19 Group
TZS bit in TZMR
register
TZOS bit in TZOC
register
Count source
Prescaler Z
underflow signal
INT0 pin input
Contents of timer Z
IR bit in TZIC
register
TZOPL bit in PUM
register
TZOUT pin input
The above applies under the following conditions.
PREZ = 01h, TZPR = 01h
TZOPL bit in PUM register = 0, INOSTG bit = 1 (INT0 one-shot trigger enabled)
INOSEG bit = 1 (rising edge trigger)
Figure 14.20
Operating Example in Programmable One-Shot Generation Mode
Rev.1.30
Apr 14, 2006
REJ09B0222-0130
Set to 1 by program
1
0
Set to 1 by program
1
0
1
0
Count
starts
01h
1
0
Set to 0 by program
1
0
Waveform
output starts
"H"
"L"
Page 129 of 233
Set to 0 when
counting ends
Count
Timer Z
starts
primary
reloads
00h
01h
Set to 0 when interrupt request is
acknowledged, or set to 0 by
program
Waveform
Waveform
output ends
output starts
Set to 1 by INT0 pin
input trigger
Timer Z
primary
reloads
00h
01h
Waveform
output ends
14. Timers
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