mc68hc912bc32 Freescale Semiconductor, Inc, mc68hc912bc32 Datasheet - Page 127
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mc68hc912bc32
Manufacturer Part Number
mc68hc912bc32
Description
M68hc12 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC912BC32.pdf
(334 pages)
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Freescale Semiconductor
LIMBDM
PSBCK
ECLK
*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
÷
÷
÷
÷
÷
÷
÷
2
2
2
2
2
2
2
0:0:0
0:0:1
0:1:0
1:0:0
1:1:0
0:1:1
1:0:1
1:1:1
Figure 11-3. PWM Clock Sources
M68HC12B Family Data Sheet, Rev. 9.1
BITS:
PCKA2,
PCKA1,
PCKA0
8-BIT SCALE REGISTER
8-BIT DOWN COUNTER
8-BIT SCALE REGISTER
8-BIT DOWN COUNTER
PWSCNT1
PWSCNT0
PWSCAL1
PWSCAL0
CLOCK B
CLOCK A
= 0
= 0
÷
÷
2
2
PCLK3
PCLK2
PCLK0
PCLK1
CLOCK TO PWM
CHANNEL 3
CLOCK TO PWM
CHANNEL 0
CLOCK TO PWM
CHANNEL 1
CLOCK TO PWM
CHANNEL 2
Introduction
127
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