mc68hc912dg128 Freescale Semiconductor, Inc, mc68hc912dg128 Datasheet - Page 196

• Manufacturer Part Number: mc68hc912dg128
• Description: M68hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Pulse Width Modulator
PWPOL — PWM Clock Select and Polarity
Technical Data
196
RESET:
PCLK3
Bit 7
0
PCLK2
6
0
PCKB2 – PCKB0 — Prescaler for Clock B
Read and write anytime.
PCLK3 — PWM Channel 3 Clock Select
PCLK2 — PWM Channel 2 Clock Select
PCLK1 — PWM Channel 1 Clock Select
Freescale Semiconductor, Inc.
Clock B is one of two clock sources which may be used for channels
2 and 3. These three bits determine the rate of clock B, as shown in
Table
For More Information On This Product,
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.
PCLK1
5
0
12-1.
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Table 12-1. Clock A and Clock B Prescaler
Pulse Width Modulator
(PCKB2)
PCLK0
PCKA2
4
0
0
0
0
0
1
1
1
1
(PCKB1)
PCKA1
PPOL3
3
0
0
0
1
1
0
0
1
1
(PCKB0)
PCKA0
PPOL2
0
1
0
1
0
1
0
1
2
0
Clock A (B)
PPOL1
MC68HC912DG128 — Rev 3.0
Value of
P
P
P
P
1
0
P
P
P
P
128
16
32
64
2
4
8
PPOL0
Bit 0
0
MOTOROLA
$0041