MC68HC912BD32CFU10 FREESCALE [Freescale Semiconductor, Inc], MC68HC912BD32CFU10 Datasheet - Page 120

• Manufacturer Part Number: MC68HC912BD32CFU10
• Description: Advance Information
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Pulse Width Modulator
MC68HC912BD32 Rev 1.0
NOTE:
NOTE:
PPOL3 — PWM Channel 3 Polarity
PPOL2 — PWM Channel 2 Polarity
PPOL1 — PWM Channel 1 Polarity
PPOL0 — PWM Channel 0 Polarity
Register bits PCLK0 to PCLK3 may be written anytime. If a clock select
is changed while a PWM signal is being generated, a truncated or
stretched pulse may occur during transition.
Depending on the polarity bit, the duty registers may contain the count
of either the high time or the low time. If the polarity bit is one, the output
starts high and then goes low when the duty count is reached, so the
duty registers contain a count of the high time. If the polarity bit is zero,
the output starts low and then goes high when the duty count is reached,
so the duty registers contain a count of the low time.
Freescale Semiconductor, Inc.
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0 = Channel 3 output is low at the beginning of the period; high
1 = Channel 3 output is high at the beginning of the period; low
0 = Channel 2 output is low at the beginning of the period; high
1 = Channel 2 output is high at the beginning of the period; low
0 = Channel 1 output is low at the beginning of the period; high
1 = Channel 1 output is high at the beginning of the period; low
0 = Channel 0 output is low at the beginning of the period; high
1 = Channel 0 output is high at the beginning of the period; low
when the duty count is reached.
when the duty count is reached.
when the duty count is reached.
when the duty count is reached.
when the duty count is reached.
when the duty count is reached.
when the duty count is reached.
when the duty count is reached.
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Pulse Width Modulator
8-pwm