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MOD-WiFi development board
User's manual
All boards produced by Olimex are ROHS compliant
Document revision B, May 2014
Copyright(c) 2014, OLIMEX Ltd, All rights reserved
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INTRODUCTION:
MOD-WiFi module gives you the opportunity to add WIFI to any of our
development boards with UEXT connector. There is ready made support in
Microchip's TCP-IP stack so you can use MOD-WIFI with any PIC board with UEXT
and you have hands on the complete source code.
BOARD FEATURES:
– MOD-WIFI extends OLIMEX boards (that have a UEXT connector) to have Wireless
internet access
– Uses Microchip MRF24WB0MA module
– Works with Microchip TCP-IP stack
– PCB: FR-4, 1.5 mm (0,062"), soldermask, white silkscreen component print
– Dimensions: (29.00x22.50)mm (1.14x0.86)"
– Space between the pin rows: 20mm (0.8")
ELECTROSTATIC WARNING:
The MOD-WiFi 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.
BOARD USE REQUIREMENTS:
Hardware: some of our development boards with UEXT.
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Wi-Fi Module Features:
MOD-WiFi board use MRF24WB0MA Wi-Fi module with these features:
– Single-chip 802.11b including MAC, baseband, RF and power amplifier
– Data Rate: 1 & 2 Mbps
– 802.11b/g/n compatible
– Low power operation
– API for embedded markets, no OS required
– PCB antenna
– Hardware support for AES and RC4 based ciphers (WEP, WPA, WPA2 security)
– SPI slave interface with interrupt
– Single 3.3V supply, operates from 2.7V to 3.6V
– 21mm x 31mm 36-pin Dual Flat pack PCB SM Package
– Wi-Fi certified, RoHS and CE compliant
– FCC Certified (USA, FCC ID: W7O-ZG2100-ZG2101)
– IC Certified (IC: 8248A-G21ZEROG)
– Fully compliant with EU & meets the R&TTE Directive for Radio Spectrum
– Radio Type Approval Certified (Japan, MRF24WB0MA based solution ID:
AC164136-2 – 005WWCA0311 005GZCA0149)
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BLOCK DIAGRAM:
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SCHEMATIC:
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UEXT
MOD-WIFI, board revision A with MRF24WB0MA
https://www.olimex.com
OLIMEX LTD, BULGARIA, 2014
C1
1uFC21uF
C3
39pF
R1
4.7k
R2
4.7k
R3
NA
R4
4.7k
R5
4.7k
R6
4.7kR74.7k
R8
4.7k
R9
4.7k
CE_N
20
DNC
8
DNC1
22
DNC2
12
DNC3
13
DNC4
14
DNC5
15
GND
1
GND1
10
GND2
18
GND3
19
GND4
25
GND5
28
GND6
30
GND7
36
INT_NX
33
JTAG_EN
21
JTAG_RST_N
9
JTAG_TCK
4
JTAG_TDI
6
JTAG_TDO
3
JTAG_TMS
5
RES
16
RST_N
7
SCK
34
SCS_N
23
SDI
35
SDO
32
UART_RX
26
UART_TX
27
VDD1_1.8
11
VDD1_3.3
29
VDD2_1.8
24
VDD3_1.8
31
VDD_1.8
2
VDD_3.3
17
U1
MRF24WB0MA
1 2
3 4
5 6
7 8
9 10
IDC10F/PCB
3.3V
3.3V
3.3V3.3V3.3V
3.3V
3.3V
3.3V
#SS
#SS
INT_NX
INT_NX
JTAG_RST_N
JTAG_RST_N
MISO
MISO
MOSI
MOSI
RST_N
RST_N
RXD
RXD
SCK
SCK
TXD
TXD
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BOARD LAYOUT:
POWER SUPPLY CIRCUIT:
MOD-WiFi is typically power supplied by UEXT pin 1 and pin 2 with 3.3V.
The board power consumption is about 110 mA.
RESET CIRCUIT:
MOD-WiFi reset circuit includes pull down R4 (4.7k) connected to MRF24WB0MA
pin 8 (JTAG_RST_N) and pin 21 (JTAG_EN).
JUMPER DESCRIPTION:
There are no jumpers on this board.
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CONNECTOR DESCRIPTIONS:
UEXT:
Pin # Signal Name
1 VCC
2 GND
3 RXD
4 TXD
5 INT_NX
6 RST_N
7 MISO
8 MOSI
9 SCK
10 #SS
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MECHANICAL DIMENSIONS:
UEXT measures
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AVAILABLE DEMO SOFTWARE:
–Microchip's application libraries libraries that include a TCP-IP stack and examples,
very easy to configure and use with PIC microcontrollers.
– PIC-WEB and MOD-WIFI demo example; based on MICROCHIP's application
libraries: https://www.olimex.com/Products/PIC/Development/PIC-
WEB/resources/PIC_WEB_MOD_WIFI_5_42.zip
– MOD-MX460 and MOD-WIFI demo example:
https://www.olimex.com/Products/Modules/Ethernet/MODWIFI/resources/MOD-WIFI-demo-for-the-PIC32-MX460-rev.B-board.zip
– PIC-T795 and MOD-WIFI demo example:
https://www.olimex.com/Products/Duino/PIC32/PIC32-T795/resources/T795MOD-WIFI.zip
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ORDER CODE:
MOD-WiFi – completely assembled and tested
How to order?
You can order to us directly or by any of our distributors.
Check our web www.olimex.com for more info.
Revision history:
Board revision: Rev. A – February 2010
Manual revision: Rev. Initial – June 2011
Rev. B – May 2014
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Disclaimer:
© 2014 Olimex Ltd. All rights reserved. Olimex®, logo and combinations thereof, are registered trademarks of
Olimex Ltd. Other terms and product names may be trademarks of others.
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.
Neither the whole nor any part of the information contained in or the product described in this document may be
adapted or reproduced in any material from except with the prior written permission of the copyright holder.
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.
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For product support, hardware information and error reports mail to: support@olimex.com. All document or
hardware feedback is welcome. Note that we are primarily a hardware company and our software support is
limited. Please consider reading the paragraph below about the warranty of Olimex products.
All goods are checked before they are sent out. In the unlikely event that goods are faulty, they must be
returned, to OLIMEX at the address listed on your order invoice.
OLIMEX will not accept goods that have clearly been used more than the amount needed to evaluate their
functionality.
If the goods are found to be in working condition, and the lack of functionality is a result of lack of knowledge
on the customers part, no refund will be made, but the goods will be returned to the user at their expense.
All returns must be authorized by an RMA Number. Email support@olimex.com for authorization number
before shipping back any merchandise. Please include your name, phone number and order number in your
email request.
Returns for any unaffected development board, programmer, tools, and cables permitted within 7 days from
the date of receipt of merchandise. After such time, all sales are considered final.
Returns of incorrect ordered items are allowed subject to a 10% restocking fee. What is unaffected? If you
hooked it to power, you affected it. To be clear, this includes items that have been soldered to, or have had their
firmware changed. Because of the nature of the products we deal with (prototyping electronic tools) we cannot
allow returns of items that have been programmed, powered up, or otherwise changed post shipment from our
warehouse.
All returned merchandise must be in its original mint and clean condition. Returns on damaged, scratched,
programmed, burnt, or otherwise 'played with' merchandise will not be accepted.
All returns must include all the factory accessories which come with the item. This includes any In-Circuit-
Serial-Programming cables, anti-static packing, boxes, etc.
With your return, enclose your PO#. Also include a brief letter of explanation of why the merchandise is being
returned and state your request for either a refund or an exchange. Include the authorization number on this
letter, and on the outside of the shipping box.
Please note: It is your responsibility to ensure that returned goods reach us. Please use a reliable form of
shipping. If we do not receive your package we will not be held liable.
Shipping and handling charges are not refundable. We are not responsible for any shipping charges of
merchandise being returned to us or returning working items to you.
The full text might be found at https://www.olimex.com/wiki/GTC#Warranty for future reference.
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Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Olimex Ltd.:
MOD-WIFI
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