R8C/1A Group, R8C/1B Group
14. Timers
Rev.1.30
Dec 08, 2006
Page 131 of 315
REJ09B0252-0130
Figure 14.17
Registers TZMR and PUM in Programmable Waveform Generation Mode
Timer Z Waveform Output Control Register
Symbol
Address
After Reset
PUM
0084h
00h
Bit Symbol
Bit Name
Function
RW
INT0
_____
pin one-shot trigger
control bit
INT0
_____
pin one-shot trigger
polarity select bit
0
b3 b2
INOSTG
b1 b0
0
—
(b4-b0)
0
0 0
0
b7 b6 b5 b4
RW
TZOPL
RW
0
Reserved bits
Set to 0.
Timer Z output level latch
0 : Outputs “H” for primary period.
Outputs “L” for secondary period.
Outputs “L” w hen the timer is stopped.
1 : Outputs “L” for primary period.
Outputs “H” for secondary period.
Outputs “H” w hen the timer is stopped.
RW
INOSEG
RW
Set to 0 in programmable w aveform generation
mode.
Set to 0 in programmable w aveform generation
mode.
Timer Z Mode Register
Symbol
Address
After Reset
TZMR
0080h
00h
Bit Symbol
Bit Name
Function
RW
NOTES :
1.
2.
When the TZS bit is set to 1 (count starts), the count value is w ritten to the reload register only. When the TZS bit is
set to 0 (count stops), the count value is w ritten to both reload register and counter.
TZS
Timer Z count start flag
(2)
0 : Stops counting.
1 : Starts counting.
RW
TZWC
Timer Z w rite control bit
Set to 1 in programmable w aveform generation
mode.
(1)
RW
Reserved bits
Set to 0.
RW
TZMOD0
Timer Z operating mode bits
b5 b4
0 1 : Programmable w aveform generation mode
RW
TZMOD1
RW
0 0 0
—
(b3-b0)
1 0 1 0
Refer to
14.2.5 Notes on Tim er Z
for precautions regarding the TZS bit.
b7 b6 b5 b4 b3 b2 b1 b0