
R8C/10 Group
Rev.1.20 Jan 27, 2006 page 67 of 180
REJ09B0019-0120
Bit name
Function
Bit symbol
T
i
m
e
r
Y
,
Z
w
a
v
e
f
o
r
m
o
u
t
p
u
t
c
o
n
t
r
o
l
r
e
g
i
s
t
e
r
Symbol Address After reset
PUM 0084
16 0016
7
6
5
4
3
2
1
0
N
O
T
E
S
:
1
.
T
h
e
I
N
O
S
E
G
b
i
t
i
s
v
a
l
i
d
o
n
l
y
w
h
e
n
t
h
e
I
N
T
0
P
L
b
i
t
i
n
t
h
e
I
N
T
E
N
r
e
g
i
s
t
e
r
i
s
"
0
"
(
o
n
e
-
e
d
g
e
)
.
2
.
T
h
e
I
N
O
S
G
T
b
i
t
m
u
s
t
b
e
s
e
t
t
o
"
1
"
a
f
t
e
r
t
h
e
I
N
T
0
E
N
b
i
t
i
n
t
h
e
I
N
T
E
N
r
e
g
i
s
t
e
r
a
n
d
t
h
e
I
N
O
S
E
G
b
i
t
i
n
t
h
e
P
U
M
r
e
g
i
s
t
e
r
a
r
e
s
e
t
.
0000
T
Y
O
P
TZOPL
INOSEG
I
N
O
S
T
G
INT0 pin one-shot trigger
polarity select bit
(1)
Timer Z output level
latch
T
i
m
e
r
Y
o
u
t
p
u
t
l
e
v
e
l
l
a
t
c
h
I
N
T
0
p
i
n
o
n
e
-
s
h
o
t
t
r
i
g
g
e
c
o
n
t
r
o
l
b
i
t
(2
)
Function varies depending on the operation mode
Function varies depending on the operation mode
0 : Edge trigger at falling edge
1 : Edge trigger at rising edge
(
T
i
m
e
r
Z
)
(Timer Z)
0 : INT0 pin one-shot trigger invalid
1 : INT0 pin one-shot trigger valid
(
b
3
-
b
0
)
R
e
s
e
r
v
e
d
b
i
t
Must set to “0”
RW
RW
R
W
RW
R
W
RW
Figure 12.14 PUM Register and TCSS Register
Bit name
Function
B
i
t
s
y
m
b
o
l
Timer X count source
select bit
(1)
b1 b0
T
X
C
K
1
TXCK0
TYCK0
Timer Y count source
select bit
(1)
T
Z
C
K
0
T
Y
C
K
1
T
Z
C
K
1
Must be set to “0”
(
b
7
-
b
6
)
Reserved bit
Timer Z count source
select bit
(1)
NOTES:
1. Avoid switching a count source, while a counter is in progress. Timer counter must be stopped before switching a count
source.
Timer count source setting register
Symbol Address After reset
TCSS 008E
16
00
16
7
6
5
4
3
2
1
0
0 0 : f
1
0 1 : f
8
1 0 : f
32
1 1 : f
2
b3 b2
0 0 : f
1
0 1 : f
8
1 0 : f
RING
1 1 : Selects input from CNTR
1
pin
b5 b4
0 0 : f
1
0 1 : f
8
1 0 : Selects Timer Y underflow
1 1 : f
2
R
W
RW
R
W
RW
RW
R
W
R
W
R
W
12.2 Timer (Timer Y)
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