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PIC32-MAXI-WEB

General purpose development board

USER’S MANUAL

Document revision C, October 2015

All boards produced by Olimex LTD are ROHS compliant

DISCLAIMER

names may be trademarks of others and the rights belong to their respective owners.

The information in this document is provided in connection with Olimex products. No license, express or implied

or otherwise, to any intellectual property right is granted by this document or in connection with the sale of

Olimex products.

This hardware design of PIC32-MAXI-WEB is neither public not open-source. Any copying of the product would result

in copyright infringement.

The software is released under the terms that are detailed in the agreement page, that pops-up when you attempt to

download a demo software archive.

It is possible that the pictures in this manual differ from the latest revision of the board.

The product described in this document is subject to continuous development and improvements. All particulars of the

product and its use contained in this document are given by OLIMEX in good faith. However all warranties implied or

expressed including but not limited to implied warranties of merchantability or fitness for purpose are excluded. This

document is intended only to assist the reader in the use of the product. OLIMEX Ltd. shall not be liable for any loss or

damage arising from the use of any information in this document or any error or omission in such information or any

incorrect use of the product.

This evaluation board/kit is intended for use for engineering development, demonstration, or evaluation purposes only

and is not considered by OLIMEX to be a finished end-product fit for general consumer use. Persons handling the

product must have electronics training and observe good engineering practice standards. As such, the goods being

provided are not intended to be complete in terms of required design-, marketing-, and/or manufacturing-related

protective considerations, including product safety and environmental measures typically found in end products that

incorporate such semiconductor components or circuit boards.

Olimex currently deals with a variety of customers for products, and therefore our arrangement with the user is not

exclusive. Olimex assumes no liability for applications assistance, customer product design, software performance, or

infringement of patents or services described herein.

THERE IS NO WARRANTY FOR THE DESIGN MATERIALS AND THE COMPONENTS

USED TO CREATE PIC32-MAXI-WEB. THEY ARE CONSIDERED SUITABLE ONLY

FOR PIC32-MAXI-WEB.

Page 2 of 22

Table of Contents

DISCLAIMER............................................................................................................. 2

1. INTRODUCTION................................................................................................... 4

1.1 BOARD FEATURES...............................................................................................................4

1.2 ELECTROSTATIC WARNING:............................................................................................4

1.3 BOARD USE REQUIREMENTS:.........................................................................................4

1.4 BOARD LAYOUT................................................................................................................... 5

2. MICROCONTROLLER DETAILS...................................................................... 6

2.1 FEATURES.............................................................................................................................. 6

2.2 BLOCK DIAGRAM................................................................................................................8

2.3 MEMORY MAP...................................................................................................................... 9

3 BOARD SCHEMATIC AND DIMENSIONS...................................................... 10

3.1 SCHEMATIC.........................................................................................................................10

3.2 PHYSICAL DIMENSIONS.................................................................................................. 12

4. CONTROL CIRCUITRY..................................................................................... 13

4.1 POWER SUPPLY CIRCUIT................................................................................................13

4.2 RESET CIRCUIT..................................................................................................................13

4.3 CLOCK CIRCUIT................................................................................................................ 13

5. JUMPERS, CONNECTORS AND INTERFACES............................................ 14

5.1 JUMPER DESCRIPTION....................................................................................................14

5.2 INPUT/OUTPUT................................................................................................................... 14

5.3 EXTERNAL CONNECTOR DESCRIPTION....................................................................15

5.3.1 PWR_JACK..................................................................................................................................................15

5.3.2 ICSP CONNECTOR....................................................................................................................................15

5.3.3 RS232/UART.................................................................................................................................................16

5.3.6 CAN1 AND CAN2........................................................................................................................................17

5.3.7 JTAG..............................................................................................................................................................17

5.3.8 UEXT1...........................................................................................................................................................18

5.3.9 UEXT2...........................................................................................................................................................18

5.3.10 MICROSD CARD......................................................................................................................................19

6. AVAILABLE DEMO SOFTWARE......................................................................20

7. REVISION AND ORDERING INFORMATION.............................................. 21

7.1 DOCUMENT REVISION.....................................................................................................21

7.2 BOARD REVISION.............................................................................................................. 21

8. WARRANTY AND SUPPORT.............................................................................22

Page 3 of 22

1. INTRODUCTION

This board features a PIC32 processor with embedded 100Mbit Ethernet module which allows you

to easily develop network applications. It has everything you would normally need for such

applications: power relays which you can command through a web interface, a large 240×320 TFT

LCD with touchscreen support (that allows the development of complex graphical user interface

applications), digital opto-isolated inputs, trimmer potentiometer, accelerometer with integrated

temperature sensor, two CAN interface channels, RS232 interface, USB On-The-Go and micro SD

card slot to store large amounts of data. With this board you can easily automate your home and

then control and monitor it from any point in the world via Internet. An extension connector is

available so you can connect custom made hardware to the board. The PIC32MX795F512L has

512K Flash memory (plus an additional 12 KB of Boot Flash).

1.1 BOARD FEATURES

The notable board features are listed below:



PIC32MX795F512L high-performance, USB, CAN and Ethernet 32-bit Flash

microcontroller

TFT LCD 320×240 65k colors with resistive touchscreen

Debug interface – JTAG and ICSP

RESET circuit

Reset button

Two opto-isolated digital inputs with indicator LEDs

Two CAN interfaces

100Mbit Ethernet interface

Two UEXT connectors to connect to other Olimex boards

Accelerometer with integrated temperature sensor

MicroSD card holder

Two relays 10A/250VAC with indicator LEDs

USB On-The-Go

RS232 interface

Trimmer connected to analog input

Three user LEDs

Stand-alone power LED

Three user buttons

3.3V voltage regulator

Dimensions (140×100) mm (5.51×3.94)"

1.2 ELECTROSTATIC WARNING:

The PIC32-MAXI-WEB board is shipped in protective anti-static packaging. The board must not be

subject to high electrostatic potentials. General practice for working with static sensitive devices

should be applied when working with this board.

1.3 BOARD USE REQUIREMENTS:

Cables: the board needs external power supply cable and mini ICSP cable (connected to the

respective debugger) in order to test basic functionality. Depending on the peripherals used you may

also need and Ethernet RJ45 terminated cable, 9pin RS232 cable, miniUSB cable.

Page 4 of 22

Hardware: The board requires +12V regulated power supply.

!!! Please note that the PIC32 processor on this board is not supported by the once famous ICD2

programmer/debugger and derivatives. You would need a newer debugger/programmer. Please

ensure your programmer/debugger is compatible with PIC32 microcontrollers.

1.4 BOARD LAYOUT

Page 5 of 22

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