Renesas R8C/Tiny Series Manuale Pagina 67

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R8C/10 Group
Rev.1.20 Jan 27, 2006 page 57 of 180
REJ09B0019-0120
Figure 12.3 PREX Register, TX Register, and TCSS Register
B
i
t
n
a
m
e
Function
B
i
t
s
y
m
b
o
l
T
i
m
e
r
X
c
o
u
n
t
s
o
u
r
c
e
s
e
l
e
c
t
b
i
t
(1
)
b1 b0
T
X
C
K
1
T
X
C
K
0
T
Y
C
K
0
T
i
m
e
r
Y
c
o
u
n
t
s
o
u
r
c
e
s
e
l
e
c
t
b
i
t
(1
)
T
Z
C
K
0
T
Y
C
K
1
T
Z
C
K
1
M
u
s
t
b
e
s
e
t
t
o
0
(
b
7
-
b
6
)
R
e
s
e
r
v
e
d
b
i
t
T
i
m
e
r
Z
c
o
u
n
t
s
o
u
r
c
e
s
e
l
e
c
t
b
i
t
(1
)
N
O
T
E
S
:
1
.
A
v
o
i
d
s
w
i
t
c
h
i
n
g
a
c
o
u
n
t
s
o
u
r
c
e
,
w
h
i
l
e
a
c
o
u
n
t
e
r
i
s
i
n
p
r
o
g
r
e
s
s
.
T
i
m
e
r
c
o
u
n
t
e
r
m
u
s
t
b
e
s
t
o
p
p
e
d
b
e
f
o
r
e
s
w
i
t
c
h
i
n
g
a
c
o
u
n
t
s
o
u
r
c
e
.
T
i
m
e
r
c
o
u
n
t
s
o
u
r
c
e
s
e
t
t
i
n
g
r
e
g
i
s
t
e
r
S
y
m
b
o
lA
d
d
r
e
s
sA
f
t
e
r
r
e
s
e
t
T
C
S
S0
0
8
E
1
6
0
0
1
6
b
7
b
6
b
5
b
4
b
3
b
2
b
1
b
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
b
5
b
4
0 0 : f
1
0 1 : f
8
1 0 : Selects Timer Y underflow
1 1 : f
2
RW
RW
RW
RW
RW
RW
R
W
R
W
0
0
Symbol Address After reset
TX 008D
16
FF
16
Underflow of Prescaler X is counted
Function
Timer X Register
Symbol Address After reset
PREX 008C
16
FF
16
b7
b0
RW
Internal count source is counted
Function
Setting range
Prescaler X Register
b7
b0
00
16
to FF
16
00
16
to FF
16
Internal count source is counted
00
16
to FF
16
Externally input pulses are counted
00
16
to FF
16
Pulse width of externally input
pulses is measured
(Internal count source is counted)
00
16
to FF
16
Pulse period of externally input
pulses is measured
(Internal count source is counted)
00
16
to FF
16
Timer mode
Pulse output mode
Event counter mode
Pulse width
measurement mode
Pulse period
measurement mode
Mode
RW
RW
RW
RW
RW
RW
RW
Setting range
12.1 Timer (Timer X)
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