Timer X - Renesas M16C Series Hardware Manual

R8C/11 Group
Prescaler X Register
b7
Timer X Register
b7
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
b 7 b 6 b5 b 4 b 3 b 2 b 1 b 0
0 0
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 .
Figure 12.3 PREX Register, TX Register, and TCSS Register
Rev.1.20 Jan 27, 2006
REJ09B0062-0120
b0
to FF Twmf 0 6211h5.070. 1164
b0
Underflow of Prescaler X is counted
Symbol
TCSS
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
T X C K 0
s e l e c t b i t
T X C K 1
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
T Y C K 1
T i m e r Z c o u n t s o u r c e
TZCK0
s e l e c t b i t
T Z C K 1
R e s e r v e d b i t
( b 7 - b 6 )
page 72 of 204
Symbol Address
PREX 008C
Function
Internal count source is counted
Internal count source is counted
Externally input pulses are counted
Pulse width of externally input
pulses is measured
(Internal count source is counted)
Pulse period of externally input
pulses is measured
(Internal count source is counted)
Symbol Address
TX 008D
Function
Address After reset
008E 00
16 16
B i t n a m e
b 1 b 0
0 0 : f
1
(1 )
0 1 : f
8
1 0 : f
3 2
1 1 : f
2
b 3 b 2
0 0 : f
1
(1 )
0 1 : f
8
1 0 : f
R I N G
1 1 : S e l e c t s i n p u t f r o m C N T R
b 5 b 4
0 0 : f
1
(1 )
0 1 : f
8
1 0 : S e l e c t s T i m e r Y u n d e r f l o w
1 1 : f
2
Must be set to "0"
After reset
FF
16 16
Setting range
00 to FF
16 16
00 to FF
16 16
00 to FF
16 16
00 to FF
16 16
00
160000
After reset
FF
16 16
00 to FF
16 16
Function
p i n
1
RW
R W
R W
R W
R W
R W
R W
R W
R W