COM20051 View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

Manufacturer

COM20051

Integrated Microcontroller and Network Interface with Watchdog Timer and A/D Converter Interface

SMSC -> Microchip 

COM20051+

Integrated Microcontroller and Network

Interface with Watchdog Timer and A/D

Converter Interface

FEATURES

• Low Cost

• Microcontroller Based on Popular 8051

• 5 Mbps to 156 Kbps Network Data Rate

Architecture

• Network Interface Supports RS-485,

• Intel 8051 Code Compatible

Twisted Pair, Coaxial, and Fiber Optic

• 68 Pin PLCC

Interfaces

• Network Supports up to 255 Nodes

• Receive All Mode Allows Any Packet to Be

• Powerful Network Diagnostics

Received

• Maximum 512 Byte Packets

• On-Board Programmable Watchdog Timer

• Duplicate Node ID Detection

• Analog Data Acquisition Port

• Self-Configuring Network Protocol

• Retains all 8051 Peripherals Including

- Interfaces to Any A/D Converter up to

16 Bits Wide

Serial I/O and Two Timers

- Sampling Rates from 1 s to 100ms

• Utilizes ARCNET® Token Bus Network

Engine

Possible

- Decouples 80C32 from Repetitive

• Requires No Special Emulators

Sampling Tasks

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

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.

The COM20051+ contains many features that

are beneficial for embedded control

applications. The microcontroller is a fully-

functional 16MHz 80C32 that is comparable to

the Intel 80C32. In contrast to other embedded

controller/networking solutions, the COM20051+

adds a fully-featured, robust, powerful, and

simple network interface, watchdog timer, and

data acquisition port, while retaining all of the

basic 8051 peripherals, such as the serial port

and counter/timers.

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