NEC PD754244 Manuel D’Utilisation
CHAPTER 6 PERIPHERAL HARDWARE FUNCTION
122
User’s Manual U10676EJ3V0UM
6.4 Timer Counter
The
µPD754244 incorporates a three-channel timer counter. The timer counter has the following functions.
(a) Programmable interval timer operation
(b) Square wave output of any frequency to PTO0-PTO2 pins
(c) Count value read function
The timer counter can operate in the following four modes as set by the mode register.
Table 6-6. Mode List
Mode
Channel
Channel 0 Channel 1 Channel 2
TM11
TM10
TM21
TM20
Refer to
8-bit timer counter mode
0
0
0
0
6.4.2
PWM pulse generator mode
×
×
0
0
0
1
6.4.3
16-bit timer counter mode
×
1
0
1
0
6.4.4
Carrier generator mode
×
0
0
1
1
6.4.5
Remark
×: Corresponding function is not available.
6.4.1 Configuration of timer counter
The configuration of the timer counter is shown in Figures 6-23 to 6-25.