Output Control; Selecting Six Independent Pwms Or Three Complementary Pwm Pairs - Freescale Semiconductor MC68HC908MR16 Datasheet

Pulse-Width Modulator for Motor Control (PWMMC)

12.5 Output Control

This subsection discusses output control.

12.5.1 Selecting Six Independent PWMs or Three Complementary PWM Pairs

The PWM outputs can be configured as six independent PWM channels or three complementary channel
pairs. The option INDEP determines which mode is used (see
complementary operation is chosen, the PWM pins are paired as shown in
one pair is then determined by one PWM value register. This type of operation is meant for use in motor
drive circuits such as the one in
PWM VALUE REGISTER
PWM VALUE REGISTER
PWM VALUE REGISTER
AC
INPUTS
126
Figure 12-13.
PWMS 1 AND 2
PWMS 3 AND 4
PWMS 5 AND 6
Figure 12-12. Complementary Pairing
PWM
1
PWM
2
Figure 12-13. Typical AC Motor Drive
MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1
5.2 Functional
PWM
PWM
3 5
PWM PWM
4
6
Description). If
Figure 12-12. Operation of
PWM1 PIN
PWM2 PIN
PWM3 PIN
PWM4 PIN
PWM5 PIN
PWM6 PIN
TO
MOTOR
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