OLIMEX MOD-WiFi User manual

MOD-WiFi development board
User's manual
All boards produced by Olimex are ROHS compliant
Document revision B, May 2014
Copyri ht(c) 2014, OLIMEX Ltd, All ri hts reserved
Page 1

INTRODUCTION:
MOD-WiFi module gives you the opportunity to add WIFI to any o 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 W reless
nternet access
–Uses M croch p MRF24WB0MA module
–Works w th M croch p TCP-IP stack
–PCB: FR-4, 1.5 mm (0,062"), soldermask, wh te s lkscreen component pr nt
–D mens ons: (29.00x22.50)mm (1.14x0.86)"
–Space between the p n 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 or working
with static sensitive devices should be applied when working with this board.
BOARD USE REQUIREMENTS:
Hardware: some o our development boards with UEXT.
Page 2

Wi-Fi Module Features:
MOD-WiFi board use MRF24WB0MA Wi-Fi module with these eatures:
–Single-chip 802.11b including MAC, baseband, RF and power ampli ier
–Data Rate: 1 & 2 Mbps
–802.11b/g/n compatible
–Low power operation
–API or embedded markets, no OS required
–PCB antenna
–Hardware support or AES and RC4 based ciphers (WEP, WPA, WPA2 security)
–SPI slave inter ace with interrupt
–Single 3.3V supply, operates rom 2.7V to 3.6V
–21mm x 31mm 36-pin Dual Flat pack PCB SM Package
–Wi-Fi certi ied, RoHS and CE compliant
–FCC Certi ied (USA, FCC ID: W7O-ZG2100-ZG2101)
–IC Certi ied (IC: 8248A-G21ZEROG)
–Fully compliant with EU & meets the R&TTE Directive or Radio Spectrum
–Radio Type Approval Certi ied (Japan, MRF24WB0MA based solution ID:
AC164136-2 – 005WWCA0311 005GZCA0149)
Page 3

BLOCK DIAGRAM:
Page 4

SCHEMATIC:
Page 5
UEXT
MOD-WIFI, board revision A with MRF24WB MA
https://www.olimex.com
OLIMEX LTD, BULGARIA, 2 14
C1
1uF
C2
1uF
C3
39pF
R1
4.7k
R2
4.7k
R3
NA
R4 4.7k
R5
4.7k
R6
4.7k
R7
4.7k
R8
4.7k
R9
4.7k
CE_N
2
DNC 8
DNC1 22
DNC2 12
DNC3 13
DNC4 14
DNC5 15
GND 1
GND1 1
GND2 18
GND3 19
GND4 25
GND5 28
GND6 3
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
MRF24WB MA
1 2
3 4
5 6
7 8
9 1
IDC1 F/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

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.
Page 6

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
Page 7

MECHANICAL DIMENSIONS:
UEXT measures
Page 8

AVAILABLE DEMO SOFTWARE:
–Microchip's application libraries l brar es that nclude a TCP-IP stack and examples,
very easy to con igure 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/MOD-
WIFI/resources/MOD-WIFI-demo- or-the-PIC32-MX460-rev.B-board.zip
– PIC-T795 and MOD-WIFI demo example:
https://www.olimex.com/Products/Duino/PIC32/PIC32-T795/resources/T795-
MOD-WIFI.zip
Page 9

ORDER CODE:
MOD-WiFi – completely assembled and tested
How to order?
You can order to us directly or by any o our distributors.
Check our web www.olimex.com or more in o.
Revision history:
Board revision: Rev. A – February 2010
Manual revision: Rev. Initial – June 2011
Rev. B – May 2014
Page 10

Disclaimer:
© 2014 Olimex Ltd. All rights reserved. Olimex®, logo and combinations thereo , are registered trademarks o
Olimex Ltd. Other terms and product names may be trademarks o others.
The in ormation 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 o
Olimex products.
Neither the whole nor any part o the in ormation contained in or the product described in this document may be
adapted or reproduced in any material rom except with the prior written permission o the copyright holder.
The product described in this document is subject to continuous development and improvements. All particulars
o the product and its use contained in this document are given by OLIMEX in good aith. However all warranties
implied or expressed including but not limited to implied warranties o merchantability or itness or purpose are
excluded.
This document is intended only to assist the reader in the use o the product. OLIMEX Ltd. shall not be liable or
any loss or damage arising rom the use o any in ormation in this document or any error or omission in such
in ormation or any incorrect use o the product.
Page 11

For product support, hardware in ormation and error reports mail to: [email protected]. All document or
hardware eedback is welcome. Note that we are primarily a hardware company and our so tware support is
limited. Please consider reading the paragraph below about the warranty o Olimex products.
All goods are checked be ore they are sent out. In the unlikely event that goods are aulty, 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
unctionality.
I the goods are ound to be in working condition, and the lack o unctionality is a result o lack o knowledge
on the customers part, no re und 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 supp[email protected] or authorization number
be ore shipping back any merchandise. Please include your name, phone number and order number in your
email request.
Returns or any una ected development board, programmer, tools, and cables permitted within 7 days rom
the date o receipt o merchandise. A ter such time, all sales are considered inal.
Returns o incorrect ordered items are allowed subject to a 10% restocking ee. What is una ected? I you
hooked it to power, you a ected it. To be clear, this includes items that have been soldered to, or have had their
irmware changed. Because o the nature o the products we deal with (prototyping electronic tools) we cannot
allow returns o items that have been programmed, powered up, or otherwise changed post shipment rom 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 actory 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 brie letter o explanation o why the merchandise is being
returned and state your request or either a re und or an exchange. Include the authorization number on this
letter, and on the outside o the shipping box.
Please note: It is your responsibility to ensure that returned goods reach us. Please use a reliable orm o
shipping. I we do not receive your package we will not be held liable.
Shipping and handling charges are not re undable. We are not responsible or any shipping charges o
merchandise being returned to us or returning working items to you.
The ull text might be ound at https://www.olimex.com/wiki/GTC#Warranty or uture re erence.
Page 12

Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Olimex Ltd.:
MOD-WIFI