MC912DG128A Motorola, MC912DG128A Datasheet - Page 176

• Manufacturer Part Number: MC912DG128A
• Description: Microcontrollers
• Manufacturer: Motorola

PWPOL — PWM Clock Select and Polarity
Pulse-Width Modulator
MC68HC912DT128A Rev 2.0
176
RESET:
PCLK3
Bit 7
0
PCLK2
6
0
Read and write anytime.
PCLK3 — PWM Channel 3 Clock Select
PCLK2 — PWM Channel 2 Clock Select
PCLK1 — PWM Channel 1 Clock Select
PCLK0 — PWM Channel 0 Clock Select
If a clock select is changed while a PWM signal is being generated, a
truncated or stretched pulse may occur during the transition.
0 = Clock B is the clock source for channel 3.
1 = Clock S1 is the clock source for channel 3.
0 = Clock B is the clock source for channel 2.
1 = Clock S1 is the clock source for channel 2.
0 = Clock A is the clock source for channel 1.
1 = Clock S0 is the clock source for channel 1.
0 = Clock A is the clock source for channel 0.
1 = Clock S0 is the clock source for channel 0.
PCLK1
5
0
(PCKB2)
Table 28 Clock A and Clock B Prescaler
PCKA2
Pulse-Width Modulator
PCLK0
0
0
0
0
1
1
1
1
4
0
(PCKB1)
PCKA1
PPOL3
0
0
1
1
0
0
1
1
3
0
(PCKB0)
PCKA0
PPOL2
2
0
0
1
0
1
0
1
0
1
PPOL1
Clock A (B)
1
0
Value of
P
P
P
P
P
P
P
P
128
16
32
64
2
4
8
PPOL0
Bit 0
0
MOTOROLA
$0041
6-pwm