AN1910 Freescale Semiconductor / Motorola, AN1910 Datasheet - Page 2

• Manufacturer Part Number: AN1910
• Description: 3-Phase AC Motor Control with V/Hz Speed Closed Loop Using the DSP56F80X
• Manufacturer: Freescale Semiconductor / Motorola

Motorola DSP Advantages and Features
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offer a rich dedicated peripherals set, such as pulse width modulation (PWM) modules,
analog-to-digital converter (ADC), timers, communication peripherals (SCI, SPI, CAN), on-board
flash and RAM. Several parts comprise the family: DSP56F801/803/805/807, with different
peripherals and on-board memory configurations. Generally, all are well suited for motor control.
The typical member of the family, the DSP56F805, provides the following peripheral blocks:
The pulse-width-modulation (PWM) block offers high freedom in its configuration enabling to control
the AC induction motor in efficient way.
The PWM block has the following features:
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Two pulse width modulator modules (PWMA & PWMB), each with six PWM outputs, three
current status inputs, and four fault inputs, fault tolerant design with deadtime insertion,
supports both center- and edge- aligned modes
Two 12-bit, analog-to-digital convertors (ADCs), supporting two simultaneous conversions
with dual 4-pin multiplexed inputs, ADC and can be synchronized by PWM modules
synchronized
Two quadrature decoders (Quad Dec0 & Quad Dec1), each with four inputs, or two additional
quad timers A & B
Two dedicated general purpose quad timers totalling 6 pins: Timer C with 2 pins and Timer D
with 4 pins
CAN 2.0 A/B module with 2-pin ports used to transmit and receive
Two serial communication interfaces (SCI0 & SCI1), each with two pins, or four additional
MPIO lines
Serial peripheral interface (SPI), with configurable 4-pin port, or four additional MPIO lines
Computer operating properly (COP) timer
Two dedicated external interrupt pins
Fourteen dedicated multiple purpose I/O (MPIO) pins and 18 multiplexed MPIO pins
External reset pin for hardware reset
JTAG/on-chip emulation (OnCE™)
Software-programmable, phase lock loop-based frequency synthesizer for the DSP core clock
Memory configuration
— 32252 16-bit words of program flash
— 512
— 2K
— 4K
— 2K
Three complementary PWM signal pairs, or six independent PWM signals
Features of complementary channel operation
Deadtime insertion
Separate top and bottom pulse width correction via current status inputs or software
Separate top and bottom polarity control
Edge-aligned or center-aligned PWM reference signals
15-bits of resolution
16-bit words of data RAM
16-bit words of data flash
16-bit words of boot flash
16-bit words of program RAM
3-Phase AC Motor Control with V/Hz Speed Closed Loop
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com