MC68HC912BD32 Datasheet, PDF (119/292 Pages) Freescale Semiconductor, Inc – Advance Information

Freescale Semiconductor, Inc.
Pulse Width Modulator
PWM Register Description
PCKB2–PCKB0 — Prescaler for Clock B
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 23.
Table 23 Clock A and Clock B Prescaler
PCKA2
(PCKB2)
0
0
0
0
1
1
1
1
PCKA1
(PCKB1)
0
0
1
1
0
0
1
1
PCKA0
(PCKB0)
0
1
0
1
0
1
0
1
Value of
Clock A (B)
E
E/ 2
E/4
E/ 8
E/16
E/ 32
E/ 64
E/ 128
PWPOL— PWM Clock Select and Polarity
Bit 7
6
5
4
PCLK3 PCLK2 PCLK1 PCLK0
RESET:
0
0
0
0
3
PPOL3
0
2
PPOL2
0
1
PPOL1
0
$0041
Bit 0
PPOL0
0
Read and write anytime.
PCLK3 — PWM Channel 3 Clock Select
0 = Clock B is the clock source for channel 3.
1 = Clock S1 is the clock source for channel 3.
PCLK2 — PWM Channel 2 Clock Select
0 = Clock B is the clock source for channel 2.
1 = Clock S1 is the clock source for channel 2.
PCLK1 — PWM Channel 1 Clock Select
0 = Clock A is the clock source for channel 1.
1 = Clock S0 is the clock source for channel 1.
PCLK0 — PWM Channel 0 Clock Select
0 = Clock A is the clock source for channel 0.
1 = Clock S0 is the clock source for channel 0.
7-pwm
Pulse Width Modulator
For More Information On This Product,
Go to: www.freescale.com
MC68HC912BD32 Rev 1.0