XC912BC32CFU8 Motorola Semiconductor Products, XC912BC32CFU8 Datasheet - Page 135

• Manufacturer Part Number: XC912BC32CFU8
• Description: M68HC12B Family Data Sheet
• Manufacturer: Motorola Semiconductor Products

11.2 PWM Register Descriptions
11.2.1 PWM Clocks and Concatenate Register
M68HC12B Family — Rev. 8.0
MOTOROLA
LIMBDM
ECLK
PSBCK
*CLOCK S0 = (CLOCK A)/2, (CLOCK A)/4, (CLOCK A)/6,... (CLOCK A)/512
**CLOCK S1 = (CLOCK B)/2, (CLOCK B)/4, (CLOCK B)/6,... (CLOCK B)/512
BITS:
PCKB2,
PCKB1,
PCKB0
0:0:0
0:0:1
0:1:0
0:1:1
1:0:0
1:0:1
1:1:0
1:1:1
PSBCK IS BIT 0 OF PWCTL REGISTER.
INTERNAL SIGNAL LIMBDM IS 1 IF THE MCU IS IN BACKGROUND DEBUG MODE.
REGISTER:
PWPRES
This section provides descriptions of the PWM registers.
Read: Anytime
Write: Anytime
÷
÷
÷
÷
÷
÷
÷
2
2
2
2
2
2
2
Address: $0040
Reset:
Read:
Write:
Figure 11-4. PWM Clocks and Concatenate Register (PWCLK)
0:0:0
0:0:1
0:1:0
1:0:0
1:1:0
0:1:1
1:0:1
1:1:1
CON23
Figure 11-3. PWM Clock Sources
Bit 7
BITS:
PCKA2,
PCKA1,
PCKA0
0
Pulse-Width Modulator (PWM)
CON01
6
0
8-BIT SCALE REGISTER
8-BIT SCALE REGISTER
8-BIT DOWN COUNTER
8-BIT DOWN COUNTER
PCKA2
PWSCNT1
PWSCNT0
PWSCAL1
PWSCAL0
5
0
CLOCK B
CLOCK A
PCKA1
4
0
= 0
= 0
÷
÷
PCKA0
2
2
3
0
Pulse-Width Modulator (PWM)
PCKB2
PWM Register Descriptions
2
0
PCLK3
PCLK2
PCLK0
PCLK1
PCKB1
CLOCK TO PWM
CHANNEL 3
CLOCK TO PWM
CHANNEL 1
CLOCK TO PWM
CHANNEL 2
CLOCK TO PWM
CHANNEL 0
1
0
Data Sheet
PCKB0
Bit 0
0
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