DM163004-LT【PDF 1/2 页】BOARD DEMO PICDEM.NET

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PICDEM.net ? Internet/Ethernet Demonstration Board

Summary

The PICDEM.net? demonstration board is an

Internet/Ethernet demonstration board using the

PIC18F452 microcontroller and TCP/IP firmware. The

board supports any 40-pin DIP device that conforms to

the standard pin-out used by the PIC16F877 or

PIC18F452.

The board now uses the free Microchip TCP/IP Stack,

which is available in Application Note AN833 (DS00833).

Please refer to this document for code samples.

The Microchip TCP/IP Stack is a suite of programs that

can either provide services to standard TCP/IP-based

applications (HTTP Server, Mail Client, etc.) or be used in

a custom TCP/IP-based application. Potential users do

not need to know all of the intricacies of the TCP/IP

specifications to use it, and those interested only in the

accompanying HTTP Server application need not have

specific knowledge of TCP/IP.

Features

The TCP/IP stack is implemented in a modular fashion,

with all of its services creating highly abstracted layers,

each layer accessing services from one or more layers

directly below it. The stack is written in the ‘C’

programming language, intended for both Microchip C18

and HI-TECH PICC 18 compilers, and is designed to run

on Microchip's PIC18 family of microcontrollers only.

Although, this particular implementation is specifically

targeted to run on Microchip’s PICDEM.net Internet/

Ethernet demo board, it can be easily retargeted to any

hardware equipped with a PIC18 microcontroller.

Free Microchip TCP/IP stack

Web server with HTML

24L256 Serial EEPROM

Firmware for Xmodem to download web pages into

Serial EEPROM

ICSP?/ICD interface connector

Ethernet interface

RS-232 interface

16 x 2 LCD display

The PICDEM.net supports Ethernet and RS-232

interfaces. With a standard web browser such as

Microsoft?Explorer, HTML web pages generated by the

PICmicro?MCU can be viewed.

The initial board configuration is performed via the

RS-232 port using a standard terminal program to

configure the IP, Ethernet, etc., addresses for the board.

The demo board is also equipped with a 6-pin modular

connector to interface directly with the MPLAB? ICD 2

In-Circuit Debugger. With MPLAB ICD 2, the developer

can now modify or reprogram the onboard Flash-based

PICmicro device to meet the specific needs. A generous

breadboarding area is also available to add special

circuits for experimentation. The area is large enough to

add an embedded modem to provide for dial-up

capability.

Several status indicators and user interface devices are

provided, including a 16 x 2 LCD indicator and LEDs.

Package Contents

· Demo Board

· PIC18F452 MCU

· TCP/IP stack by Microchip

· MPLAB IDE Software

· Demo and Evaluation Kit Software and

Documentation

· CAT-5 Ethernet Crossover Cable

· DB9 Serial Cable

· Universal Power Supply

Host System Requirements

· PC-compatible system with a Intel Pentium?class or

higher processor, or equivalent

· A minimum of 32 MB RAM

· A minimum of 40 MB available hard drive space

· CD-ROM drive (for use with the accompanying CD)

· Available serial port

· Microsoft Windows?95/98, Windows NT?,

Windows 2000 or Windows XP

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