MC912DG128A Motorola, MC912DG128A Datasheet - Page 177

• Manufacturer Part Number: MC912DG128A
• Description: Microcontrollers
• Manufacturer: Motorola

7-pwm
MOTOROLA
The following four bits apply in left-aligned mode only:
PPOL3 — PWM Channel 3 Polarity
PPOL2 — PWM Channel 2 Polarity
PPOL1 — PWM Channel 1 Polarity
PPOL0 — PWM Channel 0 Polarity
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 zero and left
alignment is selected, the duty registers contain a count of the low
time. If the polarity bit is one, the duty registers contain a count of the
high time.
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.
Pulse-Width Modulator
MC68HC912DT128A Rev 2.0
PWM Register Descriptions
Pulse-Width Modulator
177