AN1911 Freescale Semiconductor / Motorola, AN1911 Datasheet - Page 2

• Manufacturer Part Number: AN1911
• Description: 3-Phase AC Motor Control with V/Hz Speed Open Loop Using DSP56F80X
• Manufacturer: Freescale Semiconductor / Motorola

Motorola DSP Advantages and Features
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offer a rich dedicated peripheral set, including Pulse Width Modulation (PWM) modules
Analog-to-Digital Converters (ADCs), Timers, communication peripherals (SCI, SPI, CAN), on-board
Flash and RAM. Generally, all family members are well suited for motor control.
The typical member of the family, the DSP56F805, provides the following peripheral blocks:
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Other than the fast Analog-to-Digital converter and 16-bit Quadrature Timers, the most interesting
peripheral from a motor control point of view is the Pulse Width Modulation (PWM) module. Its
highly flexible configuration permits efficient control of AC induction motors.
Two Pulse Width Modulator modules each with six PWM outputs, three Current Sense inputs, and
four Fault inputs, fault tolerant design with dead-time insertion; supports both center- and
edge-aligned modes
Two 12-bit Analog-to-Digital Converters (ADC) which support two simultaneous conversions;
ADC can be synchronized by PWM modules
Two Quadrature Decoders each with four inputs or two additional Quad Timers
Two General Purpose Quad Timers totaling six pins: Timer C with two pins and Timer D with four
pins
CAN 2.0 B Module with 2-pin port for transmit and receive
Two Serial Communication Interfaces, each with two pins (or four additional GPIO lines)
Serial Peripheral Interface (SPI) with configurable four-pin port (or four additional GPIO lines)
14 dedicated General Purpose I/O (GPIO) pins, 18 multiplexed GPIO pins
Computer Operating Properly (COP) watchdog timer
Two dedicated external interrupt pins
External reset input pin for hardware reset
External reset output pin for system reset
JTAG/On-Chip Emulation (OnCE™) module for unobtrusive, processor speed-independent
debugging
Software-programmable, Phase Lock Loop-based frequency synthesizer for the DSP core clock
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Memory configuration
— 32252
— 512
— 2K
— 4K
— 2K
16-bit words of Data RAM
16-bit words of Data Flash
16-bit words of Boot Flash
16-bit words of Program RAM
16-bit words of Program Flash
Indirect Power Factor Correction Using DSP56F80X
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com