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
Page 1
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.
Page 2
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)
Page 3
BLOCK DIAGRAM:
Page 4
SCHEMATIC:
3.3V
U1
29
17
VDD1_3.3
VDD_3.3
JTAG_TDO
JTAG_TCK
JTAG_TMS
JTAG_TDI
JTAG_RST_N
RST_N
SDO
INT_NX
SCK
SDI
RES
SCS_N
JTAG_EN
CE_N
UART_RX
UART_TX
MRF24WB0MA
VDD3_1.8
31
VDD2_1.8
24
VDD1_1.8
11
VDD_1.8
2
DNC5 15
DNC4 14
DNC3 13
DNC2 12
DNC1 22
DNC 8
GND7 36
GND6 30
GND5 28
GND4 25
GND3 19
GND2 18
GND1 10
GND 1
C1
1uF
C2
1uF
3.3V
R1
3
4.7k
4
5
6
R4
3.3V
R9
C3
R2
4.7k
4.7k
39pF
JTAG_RST_N
RST_N
MISO
INT_NX
SCK
MOSI
9
7
32
33
34
35
16
23
21
20
26
27
4.7k
#SS
JTAG_RST_N
4.7k
RXD
TXD
R8
3.3V
3.3V
3.3V
3.3V
UEXT
3.3V
R6
4.7k
R7
4.7k
R3
NA
1
RXD
3
INT_NX
5
MISO
7
SCK
9
2
R5
IDC10F/PCB
4.7k
TXD
RST_N
8
MOSI
10
#SS
4
6
MOD-WIFI, board revision A with MRF24WB0MA
OLIMEX LTD, BULGARIA, 2014
https://www.olimex.com
Page 5
