MRF24WG0MA/MB 2.4 GHz, IEEE Std. 802.11b/g RF Transceiver Module Product Brief

MRF24WG0MA/MB
2.4 GHz, IEEE Std. 802.11™ b/g RF Transceiver Module Product Brief
FEATURES:
MAC/BASEBAND FEATURES:
• IEEE Std. 802.11-compliant RF Transceiver
• Serialized unique MAC address
• Data Rate: 1, 2, 5.5, 11 Mbps 802.11b; 
6, 9, 12, 18, 24, 36, 48, 54 Mbps 802.11g
• IEEE Std. 802.11™ b/g/n compatible
• Small size: 21 mm x 31 mm 36-pin surface mount
footprint compatible to MRF24WB0M parts
• MA – Integrated PCB antenna +18 dBm output
• MB – External antenna U.FL connector +18 dBm
output
• Range: up to 400m (1300 ft.)
• Easy integration into final product – accelerates
product development and provides quicker time to
market
• Designed for use with Microchip microcontroller
families (PIC18, PIC24, dsPIC33, and PIC32) with
downloadable Microchip TCP/IP Stack
• Hardware CSMA/CA access control, automatic
ACK, and FCS creation and checking
• Hardware Security Engine for AES and RC4-based
ciphers
• Supports 802.1x, 802.1i security: WEP, WPA-PSK,
and WPA-2-PSK
OPERATIONAL:
•
•
•
•
Single operating voltage: 2.8V-3.6V (3.3V typical)
Temperature Range: –40°C to +85°C Industrial
Simple, four-wire SPI interface with interrupt
Low current consumption:
- RX mode – 95 mA (typical)
- TX mode – 275 mA (+18 dBm, 802.11b)
- Sleep – 500 µA (typical)
- Hibernate – <2 µA (typical)
RF/ANALOG FEATURES:
• ISM Band 2.400 GHz-2.484 GHz operation
• 14 Channels selectable individually or 
domain- restricted
• Data – 4500 kbps
• –95 dBm typical sensitivity at 1 Mbps
• +18 dBm typical 802.11b Tx power with control
• +14 dBm typical 802.11g Tx power with control
• Integrated RSSI readings available to host
 2011-2012 Microchip Technology Inc.
APPLICATIONS:
• Utility and Smart Energy
- Thermostats
- Smart Meters
- White Goods
- HVAC
• Consumer Electronics
- Remote Controls
- Internet Radio
- Home Security
- Toys
• Industrial Controls
- Chemical Sensors
- HVAC
- Security Systems
- M2M Communication
• Remote Device Management
- Location and Asset Tracking
- Automotive
- Code Update
• Retail
- POS Terminals
- Wireless Price Tags
- Digital Remote
• Medical, Fitness, and Healthcare
- Glucose Meters
- Fitness Equipment
- Patient Asset Tracking
DS61170B-page 1
MRF24WG0MA/MB
Pin Diagram
Note:
Antenna connector is on the MRF24WG0MB device only.
Connection Diagram
MRF24WG0MX
External
Antenna
(MRF24WG0MB)
+3.3V (Typ)
VDD
GND
GND
CS
I/O
SDI
SDO
SDO
SDI
SCK
SCK
INT
INTx
HIBERNATE
WP
RESET
DS61170B-page 2
PIC® Microcontroller
I/O
I/O
I/O
 2011-2012 Microchip Technology Inc.
MRF24WG0MA/MB
TABLE 1:
PIN DESCRIPTION
Pin
Symbol
Type
Description
1
GND
P
2
NC
NC
No connect
3
NC
NC
No connect
4
NC
NC
No connect
5
NC
NC
No connect
No connect
Ground
6
NC
NC
7
RESET
I: Constant(1)
8
NC
NC
No connect
9
NC
NC
No connect
10
GND
P
11
NC
NC
No connect
12
NC
NC
No connect
13
NC
NC
No connect
14
NC
NC
No connect
15
NC
NC
No connect
I:
Constant(1)
Module Reset input
Ground
16
WP
17
VDD
P
Write protect (this pin is used to enable Flash update)
Power
18
GND
P
Ground
19
GND
P
Ground
20
HIBERNATE
I
Hibernate mode enable (high input will disable the module)
21
NC
NC
No connect
22
NC
NC
No connect
23
CS
I: Constant(1)
24
NC
NC
25
GND
P
Ground
26
DEBUG_RX
I
Serial debug port input (see Section 2.0)
27
DEBUG_TX
O
Serial debug port output (see Section 2.0)
28
GND
P
Ground
29
VDD
P
Power
30
GND
P
Ground
31
NC
NC
No connect
32
SDO
O
SPI data out
33
INT
O
Interrupt output (open drain – requires a pull-up)
34
SCK
I
SPI clock input
35
SDI
I
SPI data in
36
GND
P
Ground
SPI Chip Select input; constant drive or pull-up required
No connect
Legend: Pin type abbreviation: P = Power input, I = Input, O = Output, NC = Not Connected.
Note 1: Signals of Type “I: Constant” must either be constantly driven by the host, or have a pull-up or pull-down
(in case the host is likely to tri-state the signal during power-down modes). The constant drive is used to
ensure defined operation of the part and to minimize leakage current during low-power modes.
 2011-2012 Microchip Technology Inc.
DS61170B-page 3
MRF24WG0MA/MB
MOUNTING DETAILS
The MRF24WG0MA/MRF24WG0MB is a surface
mountable module. Module dimensions are shown in
Figure 1. The module Printed Circuit Board (PCB) is
1 mm thick with castellated mounting points on two
sides. The form factor is compatible with the
MRF24WB0M family.
FIGURE 1:
Note:
DS61170B-page 4
MRF24WG0MA/MRF24WG0MB MODULE PHYSICAL DIMENSIONS
Antenna connector is on the MRF24G0MB only.
 2011-2012 Microchip Technology Inc.
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
•
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights.
Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART,
PIC32 logo, rfPIC and UNI/O are registered trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.
FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor,
MXDEV, MXLAB, SEEVAL and The Embedded Control
Solutions Company are registered trademarks of Microchip
Technology Incorporated in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, chipKIT,
chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net,
dsPICworks, dsSPEAK, ECAN, ECONOMONITOR,
FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP,
Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB,
MPLINK, mTouch, Omniscient Code Generation, PICC,
PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE,
rfLAB, Select Mode, Total Endurance, TSHARC,
UniWinDriver, WiperLock and ZENA are trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2011-2012, Microchip Technology Incorporated, Printed in
the U.S.A., All Rights Reserved.
Printed on recycled paper.
ISBN: 978-1-62076-465-7
QUALITY MANAGEMENT SYSTEM
CERTIFIED BY DNV
== ISO/TS 16949 ==
 2011-2012 Microchip Technology Inc.
Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
DS61170B-page 5
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DS61170B-page 6
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11/29/11
 2011-2012 Microchip Technology Inc.