NEC PD754144 User Manual page 137

4-bit single-chip microcontrollers
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CHAPTER 6 PERIPHERAL HARDWARE FUNCTION
Figure 6-31. Setting of Timer Counter Mode Register (3/3)
Address
7
6
5
F90H
TM26
TM25
Count pulse (CP) select bit
TM26
TM25
0
1
0
1
1
0
1
0
1
1
1
1
Other
Timer start command bit
Clears counter and IRQT2 flag when "1" is written. Starts count operation
TM23
if bit 2 is set to "1".
Operation mode
TM22
0
Stops (count value retained)
1
Count operation
Operation mode select bit
TM21
TM20
0
0
(c) Timer counter (channel 2)
4
3
2
1
TM24
TM23
TM22
TM21
TM24
Count pulse (CP)
0
f
/2
X
1
f
X
10
0
f
/2
X
8
1
f
/2
X
6
0
f
/2
X
4
1
f
/2
X
Setting prohibited
Count operation
8-bit timer counter mode
User's Manual U10676EJ3V0UM
0
Symbol
TM20
TM2
Mode
137

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