GENERAL DESCRIPTION
The ADMC(F)341 is a low cost, single-chip, DSP-based controller suitable for permanent magnet synchronous motors, ac induction motors, and brushless dc motors. The ADMC(F)341 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
      2 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 (ADMCF341 Only)
   3 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
   2 Double-Buffered Serial Ports with SPI Mode Support
   Integrated Power-On Reset Function
   3-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
      3 Bipolar ISENSE Inputs with Programmable
         Sample-and-Hold Amplifier and Overcurrent
         Protection (Usable as 3 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
   2 16-Bit Auxiliary PWM Timers
      Synthesized Analog Output
      Programmable Frequency
      0% to 100% Duty Cycle
   2 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 Compressors
   Washing Machines
   Industrial Variable Speed Drives
   HVAC