mc68hc711k4 Freescale Semiconductor, Inc, mc68hc711k4 Datasheet - Page 215

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mc68hc711k4

Manufacturer Part Number
mc68hc711k4
Description
Hcmos Microcontroller Unit
Manufacturer
Freescale Semiconductor, Inc
Datasheet

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9.9.2.2 Pulse-Width Modulation Timer Polarity Register
9.9.2.3 Pulse-Width Modulation Timer Prescaler Register
M68HC11K Family
MOTOROLA
Address: $0061
Address: $0062
PCLK[4:3] — Pulse-Width Channel 4, 3 Clock Select Bits
PCLK[2:1] — Pulse-Width Channel 2, 1 Clock Select Bits
PPOL[4:1] — Pulse-Width Channel x Polarity Bits
Scaled clock S is generated by dividing clock A by the value in PWSCAL,
then dividing the result by two. If PWSCAL = $00, the divisor is 256, then
two.
Reset:
Reset:
Read:
Read:
Write:
Write:
Freescale Semiconductor, Inc.
For More Information On This Product,
0 = Clock B is source.
1 = Clock S is source.
0 = Clock A is source.
1 = Clock S is source.
0 = PWM channel x output is low at the beginning of the clock cycle
1 = PWM channel x output is high at the beginning of the clock
PCLK4
Bit 7
Bit 7
Bit 7
and goes high when duty count is reached.
cycle and goes low when duty count is reached.
0
0
Figure 9-32. Pulse-Width Modulation Timer
Figure 9-33. Pulse-Width Modulation Timer
Go to: www.freescale.com
PCLK3
Bit 6
Timing System
6
0
6
0
Prescaler Register (PWSCAL)
Polarity Register (PWPOL)
PCLK2
Bit 5
5
0
5
0
PCLK1
Bit 4
4
0
4
0
PPOL4
Bit 3
3
0
3
0
Pulse-Width Modulator (PWM)
PPOL3
Bit 2
2
0
2
0
PPOL2
Bit 1
1
0
1
0
Timing System
Technical Data
PPOL1
Bit 0
Bit 0
Bit 0
0
0
215

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