GENERAL DESCRIPTION
The ADMCF341 is a low-cost, single-chip DSP-based controller, suitable for permanent magnet synchronous motors, ac induction motors, and brushless dc motors. The ADMCF341 integrates a 20 MHz, fixed-point DSP core with a complete set of motor control and system peripherals that permits fast, efficient development of motor controllers.

FEATURES
   20 MHz Fixed-Point DSP Core
      Single-Cycle Instruction Execution (50 ns)
      ADSP-21xx Family Code Compatibility
      Independent Computational Units
         ALU, Multiplier/Accumulator, Barrel Shifter
      Multifunction Instructions
      Single-Cycle Context Switch
      Powerful Program Sequencer
         Zero Overhead Looping
         Conditional Instruction Execution
      Two Independent Data Address Generators
   Memory Configuration
      512 x 16-Bit Data Memory RAM
      512 x 24-Bit Program Memory RAM
      4K x 24-Bit Program Memory ROM
      4K x 24-Bit Program Flash Memory
   Three Independent Flash Memory Sectors
      3584 x 24-Bit, 256 x 24-Bit, 256 x 24-Bit
   Low-Cost Pin-Compatible ROM Option
   16-Bit Watchdog Timer
   Programmable 16-Bit Internal Timer with Prescaler
   Two Double Buffered Serial Ports with SPI Mode Support
   Integrated Power-On Reset Function
   Three-Phase 16-Bit PWM Generation Unit:
      16-Bit Center-Based PWM Generator
      Programmable PWM Pulsewidth
      Edge Resolution to 50 ns
      153 Hz Minimum Switching Frequency
      Double/Single Duty Cycle Update Mode Control
      Individual Enable and Disable for Each PWM Output
      High-Frequency Chopping Mode for Transformer
         Coupled Gate Drives
      External PWMTRIP Pin
   Integrated 6-Channel ADC Subsystem
      Three Bipolar ISENSE Inputs with Programmable
      Sample-and-Hold Amplifier and Overcurrent Protection
      (Usable as Three Dedicated Analog Inputs)
   Muxed Auxiliary Analog Inputs
      Internal Voltage Reference (2.5 V)
      Acquisition Synchronized to PWM Switching
      Frequency
   9-Pin Digital I/O Port
      Bit Configurable as Input or Output
      Change of State Interrupt Support
   Two 16-Bit Auxiliary PWM Timers
      Synthesized Analog Output
      Programmable Frequency
      0% to 100% Duty Cycle
      Two Programmable Operational Modes
      Independent Mode/Offset Mode
   Motor Types
      Permanent Magnet Synchronous Motors (PMSM)
      Brushless DC Motors (BDCM)
      AC Induction Motors (ACIM)

APPLICATIONS
   Refrigerator and Air Conditioner Compressor
   Washing Machines
   Industrial Variable Speed Drives
   HVAC