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