OLIMEX ENC28J60-H Development Board User Manual

: June 12, 2024
: OLIMEX

Table of Contents

INTRODUCTION
BOARD FEATURES
ELECTROSTATIC WARNING
Ethernet Controller Features
BLOCK DIAGRAM
MEMORY MAP
SCHEMATIC
POWER SUPPLY CIRCUIT
CONNECTOR DESCRIPTIONS
EXT
MECHANICAL DIMENSIONS
AVAILABLE DEMO SOFTWARE
ORDER CODE
REVISION HISTORY
Documents / Resources

OLIMEX ENC28J60-H Development Board

OLIMEX ENC28J60-H Development Board

INTRODUCTION

ENC28J60-H is world’s smallest Ethernet controller development board with it’s size of only 30×24mm. It provides easy connection to any microcontroller with only few ports via SPI which makes it perfect for adding Ethernet connectivity to embedded applications.

BOARD FEATURES

ENC28J60 10 Mbit Ethernet controller
on-board RJ45 connector with build in Ethernet transformer and two status LEDs
easy interface to any microcontroller via SPI
compact size in DIL 10 pin format, the distance between pin rows is 0.8”
PCB: FR-4, 1.5 mm (0,062″), soldermask, white silkscreen component print
Dimensions: 30×24 mm (1.18×0.95″)

ELECTROSTATIC WARNING

The ENC28J60-H 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.

Ethernet Controller Features

ENC28J60-H board use ENC28J60 stand-alone Ethernet controller with these features:

IEEE 802.3. Compatible Ethernet Controller
Fully Compatible with 10/100/1000Base-T Networks
Integrated MAC and 10Base-T PHY
Supports One 10Base-T Port with Automatic Polarity Detection and Correction
Supports Full and Half-Duplex modes
Programmable Automatic Retransmit on Collision
Programmable Padding and CRC Generation
Programmable Automatic Rejection of Erroneous Packets
SPI Interface with Clock Speeds Up to 20 MHz

BLOCK DIAGRAM

Block Diagram

MEMORY MAP

Memory Map

SCHEMATIC

Schematic

ENC28J60-H
Rev. B
COPYRIGHT(C) 2008, OLIMEX Ltd.
http://www.olimex.com/dev

Schematic

POWER SUPPLY CIRCUIT

ENC28J60-H is typically power supplied by EXT pin 10 and pin 9.

RESET CIRCUIT

ENC28J60-H reset circuit includes EXT connector pin 8, U1 pin 10 and R9 (10k).

CLOCK CIRCUIT

Quartz crystal 25 MHz is connected to ENC28J60 pin 23 (OSC1) and pin 24 (OSC2).

IMPORTANT: If the board has a quartz crystal rotated at 45 degrees relative to the pads provided do not panic. This is normal. We have two types of such crystals – one of them requires 4 pads, the other only 2 pads. That is why we have provided 4 pads to be able to fit both crystals. All boards Olimex manufactures pass automatized optical inspection after assembly and obvious misplacement like this is impossible to occur.

Clock Circuit

JUMPER DESCRIPTION

There are no configurable jumpers on the board.

CONNECTOR DESCRIPTIONS

LAN

Connector Descriptions

Pin # Signal Name Chip Side Pin # Signal Name Chip Side

1

| TX+| 5| Not Connected (NC)
2| TX-| 6|

VDD

3

| VDD| 7| RX+
4| Not Connected (NC)| 8|

RX-

LED| Color|

Usage

---|---|---

Right

| Green| Link status
Left| Yellow|

Activity status

EXT

Connector Descriptions

Pin#

| Signal Name| Pin#| Signal Name
---|---|---|---
1| SCK| 6|

CLKOUT

2

| MOSI| 7| CS
3| MISO| 8|

RST

4

| WOL| 9| GND
5| INT| 10|

3.3V

MECHANICAL DIMENSIONS

Mechanical Dimensions

AVAILABLE DEMO SOFTWARE

Please check the SOFTWARE section of the product page for a number of examples with different boards. The web page for ENC28J60-H is: https://www.olimex.com/Products/Modules/Ethernet/ENC28J60-H/

ORDER CODE

ENC28J60-H – completely assembled and tested, includes ENC28J60 Ethernet controller

How to order?

You can purchase directly from our online shop or from any of our distributors. Note that usually it might be faster and cheaper to purchase Olimex products from our distributors. List of confirmed Olimex LTD distributors and resellers: https://www.olimex.com/Distributors

Please visit our web site www.olimex.com for more information.

REVISION HISTORY

Board revision:

Board revision	Notable changes
B	Initial release of the board

Manual revision:

Document revision	Notable changes	Modified page
A

Initial manual release

| All
B, 23.01.15|

Cleared duplicate information
Added clarification about the rotated quartz crystal
Formatting improvements

| All

Disclaimer:

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.

The hardware design of ENC28J60-H is considered intellectual property of Olimex. The hardware design files are considered copyright material and would not be distributed.

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 ENC28J60-H. THEY ARE CONSIDERED SUITABLE ONLY FOR ENC28J60-H.

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