CHAPTER 7 TIMER/COUNTER FUNCTION
User’s Manual U13850EJ4V0UM
213
Figure 7-37. TM2, TM3 Timer Clock Selection Registers 20, 21, 30, 31 (TCL20, TCL21, TCL30, and TCL31)
After reset: 00H
R/W
Address: FFFFF244H, FFFFF254H
7
6
5
4
3
2
1
0
TCLn0
0
0
0
0
0
TCLn2
TCLn1
TCLn0
(n = 2, 3)
After reset: 00H
R/W
Address: FFFFF24EH, FFFFF25EH
7
6
5
4
3
2
1
0
TCLn1
0
0
0
0
0
0
0
TCLn3
(n = 2, 3)
Count clock selection
f
XX
TCLn3
TCLn2
TCLn1
TCLn0
Count clock
20 MHz
Note
12.58 MHz
0
0
0
0
TIn falling edge
−
−
0
0
0
1
TIn rising edge
−
−
0
0
1
0
f
XX
/4
200 ns
318 ns
0
0
1
1
f
XX
/8
400 ns
636 ns
0
1
0
0
f
XX
/16
800 ns
1.3
µ
s
0
1
0
1
f
XX
/32
1.6
µ
s
2.5
µ
s
0
1
1
0
f
XX
/128
6.4
µ
s
10.2
µ
s
0
1
1
1
f
XX
/512
25.6
µ
s
40.7
µ
s
1
0
0
0
Setting prohibited
−
−
1
0
0
1
Setting prohibited
−
−
1
0
1
0
f
XX
/64
3.2
µ
s
5.1
µ
s
1
0
1
1
f
XX
/256
12.8
µ
s
20.3
µ
s
1
1
0
0
Setting prohibited
−
−
1
1
0
1
Setting prohibited
−
−
1
1
1
0
Setting prohibited
−
−
1
1
1
1
Setting prohibited
−
−
Note
Only for the V850/SB1.
Cautions 1. When TCLn0 and TCLn1 are overwritten by different data, write after temporarily
stopping the timer.
2. Always set bits 3 to 7 to in TCLn0 to 0, and bits 1 to 7 in TCLn1 to 0.
Remark
When connected in cascade, the settings of TCL33 to TCL30 of TM3 are invalid.