Справочник Пользователя для Motorola MC68HC908MR16
Pulse-Width Modulator for Motor Control (PWMMC)
PWM Glossary
MC68HC908MR16/MC68HC908MR32 — Rev. 4.0
Advance Information
MOTOROLA
Pulse-Width Modulator for Motor Control (PWMMC)
183
9.11 PWM Glossary
CPU cycle — One internal bus cycle (1/f
OP
)
PWM clock cycle (or period) — One tick of the PWM counter (1/f
OP
with no prescaler). See
PWM cycle (or period)
•
Center-aligned mode: The time it takes the PWM counter to count
up and count down (modulus * 2/f
up and count down (modulus * 2/f
OP
assuming no prescaler). See
.
•
Edge-aligned mode: The time it takes the PWM counter to count
up (modulus/f
up (modulus/f
OP
). See
.
Table 9-10. OUTx Bits
OUTx Bit
Complementary Mode
Independent Mode
OUT1
1 — PWM1 is active.
0 — PWM1 is inactive.
0 — PWM1 is inactive.
1 — PWM1 is active.
0 — PWM1 is inactive.
0 — PWM1 is inactive.
OUT2
1 — PWM2 is complement of PWM 1.
0 — PWM2 is inactive.
0 — PWM2 is inactive.
1 — PWM2 is active.
0 — PWM2 is inactive.
0 — PWM2 is inactive.
OUT3
1 — PWM3 is active.
0 — PWM3 is inactive.
0 — PWM3 is inactive.
1 — PWM3 is active.
0 — PWM3 is inactive.
0 — PWM3 is inactive.
OUT4
1 — PWM4 is complement of PWM 3.
0 — PWM4 is inactive.
0 — PWM4 is inactive.
1 — PWM4 is active.
0 — PWM4 is inactive.
0 — PWM4 is inactive.
OUT5
1 — PWM5 is active.
0 — PWM5 is inactive.
0 — PWM5 is inactive.
1 — PWM5 is active.
0 — PWM5 is inactive.
0 — PWM5 is inactive.
OUT6
1 — PWM 6 is complement of PWM 5.
0 — PWM6 is inactive.
0 — PWM6 is inactive.
1 — PWM6 is active.
0 — PWM6 is inactive.
0 — PWM6 is inactive.