MC68HC908MR8 Datasheet, PDF (153/372 Pages) Motorola, Inc – Microcontrollers

Pulse-Width Modulator for Motor Control (PWMMC)
Output Control
PWM VALUE REGISTER
PWMS 1 & 2
PWM1
PWM2
PWM VALUE REGISTER
PWMS 3 & 4
PWM VALUE REGISTER
PWMS 5 & 6
Figure 9-11. Complementary Pairing
PWM3
PWM4
PWM5
PWM6
AC
INPUTS
PWM
1
PWM
3
PWM
2
PWM
4
PWM
5
PWM
6
TO
MOTOR
Figure 9-12. Typical AC Motor Drive
When complementary operation is used, two additional features are
provided:
• Dead-time insertion
• Separate top/bottom pulse width correction to correct for
distortions caused by the motor drive characteristics.
If independent operation is chosen, each PWM has its own PWM value
register.
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor Pulse-Width Modulator for Motor Control (PWMMC)
Technical Data
153