COM20051+中文資料SMSC數(shù)據(jù)手冊PDF規(guī)格書

GENERAL DESCRIPTION

The COM20051+ is a low-cost, highly-integrated microcontroller incorporating a highperformance 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 similar to 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

? Low Cost

? Microcontroller Based on Popular 8051 Architecture

? Intel 8051 Code Compatible

? 68 Pin PLCC

? Network Supports up to 255 Nodes

? Powerful Network Diagnostics

? Maximum 512 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

? On-Board Programmable Watchdog Timer

? Analog Data Acquisition Port

- Interfaces to Any A/D Converter up to 16 Bits Wide

- Sampling Rates from 1 s to 100ms Possible

- Decouples 80C32 from Repetitive Sampling Tasks