MC68HC912BD32 Datasheet, PDF (123/292 Pages) Freescale Semiconductor, Inc – Advance Information

Freescale Semiconductor, Inc.
Pulse Width Modulator
PWM Register Description
PWSCNT0— PWM Scale Counter 0 Value
$0045
Bit 7
6
5
4
3
2
1
Bit 0
Bit 7
6
5
4
3
2
1
Bit 0
RESET:
0
0
0
0
0
0
0
0
PWSCNT0 is a down-counter that, upon reaching $00, loads the
value of PWSCAL0. Read any time.
PWSCAL1— PWM Scale Register 1
$0046
Bit 7
6
5
4
3
2
1
Bit 0
Bit 7
6
5
4
3
2
1
Bit 0
RESET:
0
0
0
0
0
0
0
0
Read and write anytime. A write will cause the scaler counter
PWSCNT1 to load the PWSCAL1 value unless in Special mode with
DISCAL =1 in the PWTST register.
PWM channels 2 and 3 can select clock S1 (scaled) as its input clock
by setting the control bit PCLK2 and PCLK3 respectively. Clock S1 is
generated by dividing clock B by the value in the PWSCAL1 register
and dividing again by two. When PWSCAL1 = $FF, clock B is divided
by 256 then divided by two to generate clock S1.
PWSCNT1— PWM Scale Counter 1 Value
$0047
Bit 7
6
5
4
3
2
1
Bit 0
Bit 7
6
5
4
3
2
1
Bit 0
RESET:
0
0
0
0
0
0
0
0
PWSCNT1 is a down-counter that, upon reaching $00, loads the
value of PWSCAL1. Read any time.
11-pwm
Pulse Width Modulator
For More Information On This Product,
Go to: www.freescale.com
MC68HC912BD32 Rev 1.0