Справочник Пользователя для Motorola MC68HC908MR16
Advance Information
MC68HC908MR16/MC68HC908MR32 — Rev. 4.0
182
Pulse-Width Modulator for Motor Control (PWMMC)
MOTOROLA
Pulse-Width Modulator for Motor Control
DT1 — Dead-Time 1 Bit
Current sensing pin IS1 is monitored immediately before dead-time
ends due to the assertion of PWM1.
ends due to the assertion of PWM1.
9.10.11 PWM Output Control Register
The PWM output control register (PWMOUT) is used to manually control
the PWM pins.
the PWM pins.
OUTCTL— Output Control Enable Bit
This read/write bit allows the user to manually control the PWM pins.
When set, the PWM generator is no longer the input to the dead-time
and output circuitry. The OUTx bits determine the state of the PWM
pins. Setting the OUTCTL bit does not disable the PWM generator.
The generator continues to run, but is no longer the input to the PWM
dead-time and output circuitry. When OUTCTL is cleared, the outputs
of the PWM generator immediately become the inputs to the
dead-time and output circuitry.
When set, the PWM generator is no longer the input to the dead-time
and output circuitry. The OUTx bits determine the state of the PWM
pins. Setting the OUTCTL bit does not disable the PWM generator.
The generator continues to run, but is no longer the input to the PWM
dead-time and output circuitry. When OUTCTL is cleared, the outputs
of the PWM generator immediately become the inputs to the
dead-time and output circuitry.
1 = PWM outputs controlled manually
0 = PWM outputs determined by PWM generator
0 = PWM outputs determined by PWM generator
OUT6–OUT1— PWM Pin Output Control Bits
These read/write bits control the PWM pins according to
Address: $0025
Bit 7
6
5
4
3
2
1
Bit 0
Read:
0
OUTCTL
OUT6
OUT5
OUT4
OUT3
OUT2
OUT1
Write:
Reset:
0
0
0
0
0
0
0
0
= Unimplemented
Figure 9-45. PWM Output Control Register (PWMOUT)