GENERAL DESCRIPTION
The ADMC330 is a low cost single chip DSP microcontroller optimized for stand alone ac motor control applications. The device is based on a 20 MHz fixed-point DSP core (ADSP- 2171) and a set of motor control peripherals including seven analog input channels and a 12-bit three-phase PWM generator. The device has two auxiliary 8-bit PWM channels and adds expansion capability through the serial ports and an 8-bit digital I/O port. The ADMC330 has internal 2K words program RAM, and 1K words data RAM, which can be loaded from an external device via the serial port. There are also 2K words of internal program ROM, which includes a monitor that adds software debugging features through the serial port.

FEATURES
   Seven Analog Input Channels
      Acquisition Synchronized to PWM Switching Frequency
   Three-Phase 12-Bit PWM Generator
      Programmable Deadtime and Narrow Pulse Deletion
      2.5 kHz Minimum Switching Frequency
      ECM Control Mode
      Output Control for Space Vector Modulation
      Gate Drive Block (Pulsed PWM Output Capability)
      Hardwired Output Polarity Control
      External Trip Input
   Two 8-Bit Auxiliary PWM Timers
      Synthesized Analog Output
      39 kHz Frequency
      0 to 99.6% Duty Cycle
   Eight Bits of Digital I/O Port
      Bit Configurable as Input or Output
      Change of State Interrupt Support
   20 MIPS Fixed Point DSP Core
      Powerful Program Sequencer
         Zero Overhead Looping
         Conditional Instruction Execution
      Independent Computational Units
         ALU
         Multiplier/Accumulator
         Barrel Shifter
      Multifunction Instructions
      Single-Cycle Instruction Execution (50 ns)
      Single-Cycle Context Switch
   ADSP-2100 Family Code and Function Compatible with
      Instruction Set Enhancements
   16-Bit Watchdog Timer
   Programmable 16-Bit Interval Timer with Prescaler
   Two Synchronous Serial Ports
      Full Debugger Interface
      2 Bootstrap Protocols via Sport 1, Serial and UART
   Memory Configuration
      2K 3 24-Bit Word Program RAM
      1K 3 16-Bit Word Data RAM
      2K 3 24-Bit Word Program ROM