Specifications

The Pace-Setting Performance and Features of the 56F8300 Hybrid Controllers
MOTOROLA Motorola 56F8300 Hybrid Controller Family 23
Figure 1-12 shows the effect of using the PWM module ‘s waveform distortion correction feature. In
certain operating conditions, the results can be significant. The corrected waveform results in
smoother, quieter, and more efficient motor operation.
Figure 1-12. Actual Waveforms Taken on a 1/2 Horsepower Motor
The “write once” feature of certain PWM registers protects critical system configuration data from
accidentally being changed. The parameters that can be covered by this protection are:
• Dead-time value
• Fault-disable mapping
• PWM output polarity bits
• Independent or complementary (tandem) PWM operation
In a typical motor control application, these parameters are constants which are not expected to change
for a given system configuration. This mode is optional, in that the software developer can choose
whether to make these parameters write protected after configuring them. If write protection is not
enabled, then they can be modified without restriction.
3.2.7 ADC Module
The 56F8300 Analog-to-Digital (ADC) Converters are very powerful, offering high frequency
operation of up to 1.2µs per conversion, and are very accurate, offering twelve bits of resolution.
Figure 1-13 shows a functional block diagram of the ADC module. As shown, it has two sample and
hold circuits and two conversion units, enabling simultaneous conversions.
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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