NEC PD754144 - Manual (Page 146)

CHAPTER 6 PERIPHERAL HARDWARE FUNCTION
146
User’s Manual U10676EJ3V0UM
Figure 6-36. Setting of Timer Counter Mode Register
7 6 5 4 3 2 1 0
TM20 TM21 TM23 TM22 TM24 TM25 TM26 –
Address
TM2 F90H
Symbol
TM23
Clears counter and IRQT2 flag when "1" is written. Starts count operation
if bit 2 is set to "1".
Timer start command bit
Operation mode
TM22
0
1
Stops (count value retained)
Count operation
Count operation
Count pulse (CP) select bit
TM26 Count pulse (CP) TM25
0 1
1 0
0 1
1 0
TM24
0
1
0
1
1 1 0
1 1 1
Operation mode select bit
TM21
0 PWM pulse generator mode
Mode TM20
1
f X /2
f
X
f X /2 8
f
X
/2 6
f X /2 10
f X /2 4
Other Setting prohibited
Remark When the timer counter (channel 2) is used as the PWM pulse generator mode, set the operation mode
select bits TM10 and TM11 of the time counter (channel 1) to 0.