28-Lead ROM-Based
DSP Motor Controller with Current Sense
a
ADMC328
TARGET APPLICATIONS
150 Hz Minimum Switching Frequency
Washing Machines, Refrigerator Compressors, Fans,
Pumps, Industrial Variable Speed Drives, Automotive
Double/Single Duty Cycle Update Mode Control
Programmable PWM Pulsewidth
Special Crossover Function for Brushless DC Motors
Individual Enable and Disable for Each PWM Output
High Frequency Chopping Mode for Transformer
Coupled Gate Drives
MOTOR TYPES
Permanent Magnet Synchronous Motors (PMSM)
Brushless DC Motors (BDCM)
External PWMTRIP Pin
Integrated ADC Subsystem
Five Analog Inputs Plus One Dedicated ISENSE Input
Acquisition Synchronized to PWM Switching Frequency
Internal Voltage Reference
FEATURES
20 MIPS Fixed-Point DSP Core
Single Cycle Instruction Execution (50 ns)
ADSP-21xx Family Code Compatible
Independent Computational Units
ALU
9-Pin Digital I/O Port
Bit Configurable as Input or Output
Change of State Interrupt Support
Two 8-Bit Auxiliary PWM Timers
Synthesized Analog Output
Programmable Frequency
Multiplier/Accumulator
Barrel Shifter
Multifunction Instructions
Single Cycle Context Switch
Powerful Program Sequencer
Zero Overhead Looping
0% to 100% Duty Cycle
Two Programmable Operational Modes
Independent Mode/Offset Mode
16-Bit Watchdog Timer
Conditional Instruction Execution
Two Independent Data Address Generators
Memory Configuration
Programmable 16-Bit Internal Timer with Prescaler
Double Buffered Synchronous Serial Port
Hardware Support for UART Emulation
Integrated Power-On Reset Function
28-Lead SOIC or PDIP Package Options
512 ؋
24-Bit Program Memory RAM
4K ؋
24-Bit Program Memory ROM
512 ؋
16-Bit Data Memory RAM
Three-Phase 16-Bit PWM Generator
16-Bit Center-Based PWM Generator
Programmable Dead Time and Narrow Pulse Deletion
Edge Resolution to 50 ns
FUNCTIONAL BLOCK DIAGRAM
ADSP-2100 BASE
ARCHITECTURE
PROGRAM
ROM
MEMORY
BLOCK
DATA
ADDRESS
I
5
16-BIT
3-PHASE
PWM
PROGRAM
RAM
DATA
MEMORY
SENSE
AMP
V
2.5V
GENERATORS
REF
ANALOG
INPUTS
PROGRAM
SEQUENCER
& TRIP
DAG 1
DAG 2
PROGRAM MEMORY ADDRESS
DATA MEMORY ADDRESS
PROGRAM MEMORY DATA
DATA MEMORY DATA
ARITHMETIC UNITS
ALU MAC SHIFTER
AUX
PWM
WATCH-
DOG
TIMER
SERIAL PORT
SPORT1
9-BIT
PIO
POR
TIMER
REV. B
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
World Wide Web Site: http://www.analog.com
© Analog Devices, Inc., 2000
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