GENERAL DESCRIPTION

The COM20051 is a low-cost, highly-integrated microcontroller incorporating a high-performance network controller based on the ARCNET Token Bus Standard (ANSI 878.1). The COM20051 is based around the popular Intel 8051 architecture. The device is implemented using a microcontroller core compatible with the Intel 80C32 ROMless version of the 8051 architecture. The COM20051 is ideal for distributed control networking applications such as those found in industrial/machine controls, building/factory automation, consumer products, instrumentation and automobiles.

FEATURES

• High Performance/Low Cost

• Microcontroller Based on Popular 8051 Architecture

• Intel 8051 Instruction Set Compatible

• Drop-In Replacement for 80C32 PLCC

• Network Supports up to 255 Nodes

• Powerful Network Diagnostics

• Maximum 507 Byte Packets

• Duplicate Node ID Detection

• Self-Configuring Network Protocol

• Retains all 8051 Peripherals Including Serial I/O and Two Timers

• Utilizes ARCNET Token Bus Network Engine

• Requires No Special Emulators

• 5 Mbps to 156 Kbps Network Data Rate

• Network Interface Supports RS-485, Twisted Pair, Coaxial, and Fiber Optic Interfaces

• Receive All Mode Allows Any Packet to Be Received