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. 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