Microchip Technology MRF24J40MB Spread Spectrum Transmitter User Manual MRF24J40MA

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MRF24J40MB

Data Sheet

2.4 GHz IEEE Std. 802.15.4™

20 dBm RF Transceiver Module

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and may be superseded by updates.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.

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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,

rfPIC and UNI/O are registered trademarks of Microchip

Technology Incorporated in the U.S.A. and other countries.

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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, CodeGuard,

dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,

ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial

Programming, ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB

Certified logo, MPLIB, MPLINK, mTouch, nanoWatt XLP,

Omniscient Code Generation, PICC, PICC-18, PICkit,

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Select Mode, Total Endurance, TSHARC, 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.

Printed on recycled paper.

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.

Microchip received ISO/TS-16949:2002 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.

MRF24J40MB

Features:

• IEEE Std. 802.15.4™ Compliant RF Transceiver

• Supports ZigBee®, MiWi™, MiWi P2P and

Proprietary Wireless Networking Protocols

• Small Size: 0.9" x 1.3" (22.9 mm x 33.0 mm),

Surface Mountable

• Integrated Crystal, Internal Voltage Regulator,

Matching Circuitry, Power Amplifier, Low Noise

Amplifier and PCB Antenna

• Easy Integration into Final Product – Minimize

Product Development, Quicker Time to Market

• Radio Regulation Certified for United States

(FCC), Canada (IC) and Europe (ETSI)

• Compatible with Microchip Microcontroller

Families (PIC16F, PIC18F, PIC24F/H, dsPIC33

and PIC32)

• Up to 4000 ft. Range

Operational:

• Operating Voltage: 2.4-3.6V (3.3V typical)

• Temperature Range: -40°C to +85°C Industrial

• Simple, Four-Wire SPI Interface

• Low-Current Consumption:

- RX mode: 25 mA (typical)

- TX mode: 130 mA (typical)

- Sleep: 5 μA (typical)

RF/Analog Features:

• ISM Band 2.405-2.48 GHz Operation

• Data Rate: 250 kbps

• -102 dBm Typical Sensitivity with -23 dBm

Maximum Input Level

• +20 dBm Typical Output Power with 56 dB TX

Power Control Range

• Integrated Low Phase Noise VCO, Frequency

Synthesizer and PLL Loop Filter

• Digital VCO and Filter Calibration

• Integrated RSSI ADC and I/Q DACs

• Integrated LDO

• High Receiver and RSSI Dynamic Range

MAC/Baseband Features:

• Hardware CSMA-CA Mechanism, Automatic ACK

Response and FCS Check

• Independent Beacon, Transmit and GTS FIFO

• Supports all CCA modes and RSS/LQI

• Automatic Packet Retransmit Capable

• Hardware Security Engine (AES-128) with CTR,

CCM and CBC-MAC modes

• Supports Encryption and Decryption for MAC

Sublayer and Upper Layer

FIGURE 1: PIN DIAGRAM

VIN

GND

RESET

WAKE

SDO

SDI

SCK CS

GND

INT

11 GND

2.4 GHz IEEE Std. 802.15.4

™ 20 dBm

RF Transceiver Module

MRF24J40MB

Table of Contents

1.0 Device Overview .......................................................................................................................................................................... 3

2.0 Circuit Description ........................................................................................................................................................................ 7

3.0 Regulatory Approval................................................................................................................................................................... 17

4.0 Electrical Characteristics ........................................................................................................................................................... 21

Appendix A: Revision History............................................................................................................................................................... 23

Index ................................................................................................................................................................................................... 25

The Microchip Web Site ....................................................................................................................................................................... 27

Customer Change Notification Service ................................................................................................................................................ 27

Customer Support ................................................................................................................................................................................ 27

Reader Response ................................................................................................................................................................................ 28

Product Identification System............................................................................................................................................................... 29

TO OUR VALUED CUSTOMERS

It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip

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welcome your feedback.

Most Current Data Sheet

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http://www.microchip.com

You can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page.

The last character of the literature number is the version number, (e.g., DS30000A is version A of document DS30000).

Errata

An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for current

devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the revision

of silicon and revision of document to which it applies.

To determine if an errata sheet exists for a particular device, please check with one of the following:

• Microchip’s Worldwide Web site; http://www.microchip.com

• Your local Microchip sales office (see last page)

When contacting a sales office, please specify which device, revision of silicon and data sheet (include literature number) you are

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Customer Notification System

MRF24J40MB

1.0 DEVICE OVERVIEW

The MRF24J40MB is a 2.4 GHz IEEE Std. 802.15.4™

compliant, surface mount module with integrated

crystal, internal voltage regulator, matching circuitry,

Power Amplifier, Low Noise Amplifier and PCB

antenna. The MRF24J40MB module operates in the

non-licensed 2.4 GHz frequency band. The integrated

module design frees the integrator from extensive RF

and antenna design, and regulatory compliance

testing, allowing quicker time to market.

The MRF24J40MB module is compatible with

Microchip’s ZigBee®, MiWi™ and MiWi P2P software

stacks. Each software stack is available as a free

download, including source code, from the Microchip

web site: http://www.microchip.com/wireless.

The MRF24J40MB module has received regulatory

approvals for modular devices in the United States

(FCC), Canada (IC) and Europe (ETSI). Modular

approval removes the need for expensive RF and

antenna design, and allows the end user to place the

MRF24J40MB module inside a finished product and

not require regulatory testing for an intentional radiator

(RF transmitter).

1.1 Interface Description

Figure 1-1 shows a simplified block diagram of the

MRF24J40MB module. The module is based on the

Microchip Technology MRF24J40 IEEE 802.15.4™

2.4 GHz RF Transceiver IC. The module interfaces to

many popular Microchip PIC® microcontrollers via a

4-wire serial SPI interface, interrupt, wake, Reset,

power and ground, as shown in Figure 1-2. Table 1-1

provides the pin descriptions.

Data communications with the MRF24J40MB module

are documented in the “MRF24J40 IEEE 802.15.4™

2.4 GHz RF Transceiver Data Sheet” (DS39776). Refer

to the MRF24J40 Data Sheet for specific serial

interface protocol and register definitions.

FIGURE 1-1: MRF24J40MB BLOCK DIAGRAM

Note: See Section 3.0 “Regulatory Approval”

for specific requirements to be followed by

the integrator.

PCB

Antenna

Physical MAC

Interface

Power

Management

SPI

20 MHz

Crystal

Digital

I/O

Power

MRF24J40MB IEEE Std. 802.15.4™ Module

MRF24J40

LNA

MRF24J40MB

FIGURE 1-2: MICROCONTROLLER TO MRF24J40MB INTERFACE

TABLE 1-1: PIN DESCRIPTION

Pin Symbol Type Description

1 GND Power Ground

2 RESET DI Global hardware Reset pin

3 WAKE DI External wake-up trigger

4 INT DO Interrupt pin to microcontroller

5 SDI DI Serial interface data input

6 SCK DI Serial interface clock

7 SDO DO Serial interface data output from MRF24J40

8CS DI Serial interface enable

9 NC — No connection

10 VIN Power Power supply

11 GND Ground Ground

12 GND Ground Ground

Legend: Pin type abbreviation: D = Digital, I = Input, O = Output

SDO

I/O

SDI

SCK

INTx

MRF24J40MB

SDI

SDO

SCK

INT

I/O WAKE

VIN

GND

PIC® MCU

I/O RESET

MRF24J40MB

1.2 Mounting Details

The MRF24J40MB is a surface mountable module.

Module dimensions are shown in Figure 1-3. The

module Printed Circuit Board (PCB) is 0.032" thick with

castellated mounting points on the edge. Figure 1-4 is

a recommended host PCB footprint for the

MRF24J40MB.

The MRF24J40MB has an integrated PCB antenna.

For the best performance, follow the mounting details

shown in Figure 1-5. It is recommended that the

module be mounted on the edge of the host PCB, and

an area around the antenna, approximately 1.2", be

kept clear of metal objects. A host PCB ground plane

around the MRF24J40MB acts as a counterpoise to the

PCB antenna. It is recommended to extend the ground

plane at least 0.4" around the module.

FIGURE 1-3: MODULE DETAILS

FIGURE 1-4: RECOMMENDED PCB

FOOTPRINT

MRF24J40MB

FIGURE 1-5: MOUNTING DETAILS

0.315”

Edge of PCB

Keep area around antenna

(approximately 1.2 inches)

clear of metallic structures

for best performance

PCB Ground Plane (Counterpoise)

Underneath and extend as far as possible

to the sides and below the module

(at least 0.4 inches on each side)

for best performance

0.4”

0.4” 0.4”

1.2”

MRF24J40MB

2.0 CIRCUIT DESCRIPTION

The MRF24J40MB is a complete 2.4 GHz IEEE

Std. 802.15.4™ compliant surface mount module with

integrated crystal, internal voltage regulator, matching

circuitry, Power Amplifier, Low Noise Amplifier and PCB

antenna. The MRF24J40MB module interfaces to many

popular Microchip PIC microcontrollers via a 4-wire

serial SPI interface, interrupt, wake, Reset, power and

ground. Data communications with the MRF24J40MB

module are documented in the “MRF24J40 IEEE

802.15.4™ 2.4 GHz RF Transceiver Data Sheet”

(DS39776). Refer to the MRF24J40 Data Sheet for

specific serial interface protocol and register definitions.

2.1 Schematic

A schematic diagram of the module is shown in

Figure 2-1 and the Bill of Materials (BOM) is shown in

Table 2-1.

The MRF24J40MB module is based on the Microchip

Technology MRF24J40 IEEE 802.15.4™ 2.4 GHz RF

Transceiver IC (U1). The serial I/O (SCK, SDI, SDO

and CS), RESET, WAKE and INT pins are brought out

to the module pins. The SDO signal is tri-state buffered

by IC7 to solve a silicon errata, where the SDO signal

does not release to a high-impedance state, after the

CS pin returns to its inactive state.

Crystal, X1, is a 20 MHz crystal with a frequency

tolerance of ±10 ppm @ 25°C to meet the IEEE Std.

802.15.4 symbol rate tolerance of ±40 ppm.

A balun is formed by components: L1, L3, C2 and C3.

L2 is an RF choke and pull-up for the RFP and RFN

pins on the MRF24J40. C4 is a DC block capacitor. RF

switches, IC2 and IC4, switch between the power

amplifier, IC3, when transmitting and low noise

amplifier, IC5, when receiving. A low-pass filter is

formed by components: L10, L11, C31, C32 and C36.

The remaining passive components provide bias and

decoupling.

MRF24J40MB

FIGURE 2-1: MRF24J40MB SCHEMATIC

10 MF

2.2 MF

1 MF

20 MHz

MRF24J40MB

TABLE 2-1: MRF24J40MB BILL OF MATERIALS

Designator Description Manufacturer Part Number

C2 Chip Capacitor 0402 COG 0.5P Johanson Technology 500R07S0R5AV4T

C3 Chip Capacitor 0402 COG 0.5P Johanson Technology 500R07S0R5AV4T

C4 Chip Capacitor 0402 COG 1.0P Johanson Technology 500R07S1R0BV4T

C5 Chip Capacitor 0402 COG 1.5P Murata GRM1555C1H1R5CZ01D

C6 Not Used

C7 Chip Capacitor 0402 COG 4.7P Murata GRM1555C1H4R7CZ01D

C8 Chip Capacitor 0402 COG 4.7P Murata GRM1555C1H4R7CZ01D

C9 Chip Capacitor 0402 COG 10P Murata GRM1555C1H100JZ01D

C10 Chip Capacitor 0402 COG 10P Murata GRM1555C1H100JZ01D

C11 Chip Capacitor 0402 X5R 100N Murata GRM155R61A104KA01D

C12 Chip Capacitor 0402 X5R 100N Murata GRM155R61A104KA01D

C13 Chip Capacitor 0402 COG 15P Murata GRM1555C1H150JZ01D

C14 Chip Capacitor 0402 COG 15P Murata GRM1555C1H150JZ01D

C16 Chip Capacitor 0402 COG 22P Murata GRM1555C1H220JZ01D

C17 Chip Capacitor 0402 X5R 100N Murata GRM155R61A104KA01D

C18 Chip Capacitor 0402 COG 5.6P Murata GRM1555C1H5R6CZ01D

C19 Chip Capacitor 0402 COG 1.8P Murata GRM1555C1H1R8CZ01D

C20 Chip Capacitor 0402 X7R 1N Murata GRM155R71H102KA01D

C21 Chip Capacitor 0402 COG 47P Murata GRM1555C1H470JZ01D

C22 Chip Capacitor 0402 X7R 1N Murata GRM155R71H102KA01D

C23 Chip Capacitor 0402 COG 47P Murata GRM1555C1H470JZ01D

C24 Not Used

C25 Chip Capacitor 0402 X7R 1N Murata GRM155R71H102KA01D

C26 Chip Capacitor 0402 X5R 100N Murata GRM155R61A104KA01D

C27 Chip Capacitor 0402 COG 10P Murata GRM1555C1H100JZ01D

C28 Chip Capacitor 0402 COG 100P Murata GRM1555C1H101JZ01D

C29 Chip Capacitor 0402 X5R 100N Murata GRM155R61A104KA01D

C30 Chip Capacitor 0402 COG 47P Murata GRM1555C1H470JZ01D

C31 Chip Capacitor 0402 COG 1.5P Johanson Technology 500R07S1R5BV4T

C32 Chip Capacitor 0402 COG 0.4P Johanson Technology 500R07S0R4AV4T

C33 Chip Capacitor 0402 COG 18P Murata GRM1555C1H180JZ01D

C34 Chip Capacitor 0402 COG 18P Murata GRM1555C1H180JZ01D

C35 Chip Capacitor 0402 COG 47P Murata GRM1555C1H470JZ01D

C36 Not Used

C37 Chip Capacitor 0805 X5R 10U Murata GRM21BR60J106ME19L

C38 Chip Capacitor 0402 COG 47P Murata GRM1555C1H470JZ01D

C39 Chip Capacitor 0402 COG 47P Murata GRM1555C1H470JZ01D

C40 Chip Capacitor 0402 X5R 1U Murata GRM155R60J105ME19D

C41 Chip Capacitor 0402 X7R 10N Murata GRM155R71E103KA01D

C42 Chip Capacitor 0402 X7R 10N Murata GRM155R71E103KA01D

C43 Chip Capacitor 0402 COG 100P Murata GRM1555C1H101JZ01D

C44 Chip Capacitor 0402 X5R 100N Murata GRM155R61A104KA01D

C45 Chip Capacitor 0402 COG 47P Murata GRM1555C1H470JZ01D

Note: Capacitors and inductors cannot be substituted.

MRF24J40MB

C46 Chip Capacitor 0402 X5R 100N Murata GRM155R61A104KA01D

C47 Chip Capacitor 0402 COG 47P Murata GRM1555C1H470JZ01D

C48 Chip Capacitor 0603 X5R 2.2U Murata GRM188R60J225ME01D

IC1 802.15.4 Radio Microchip MRF24J40-I/ML

IC2 Switch SPDT Skyworks AS179-92

IC3 Power Amplifier SiGe PA2423L-R

IC4 Switch SPDT Skyworks AS179-92

IC5 Low Noise Amplifier NEC UPC8233TK-E2-A

IC6 Voltage Regulator Microchip MCP1700T-3302E/TT

IC7 Buffer-SC70 Package Fairchild NC7SZ125P5X

L1 Chip Inductor 0402 8.2N Panasonic ELJ-RF8N2JFB

L2 Chip Inductor 0402 2.7N Panasonic ELJ-RF2N7DFB

L3 Chip Inductor 0402 4.7N Panasonic ELJ-RF4N7DFB

L4 Chip Resistor 0402 0Ohms Dale CRCW04020000Z0ED

L5 Chip Inductor 0402 3.3N Panasonic ELJ-RF3N3DFB

L6 Chip Inductor 0402 3.9N Panasonic ELJ-RF3N9DFB

L7 Chip Inductor 0402 1.5N Panasonic ELJ-RF1N5DFB

L8 Chip Inductor 0402 18N Panasonic ELJ-RF18NJFB

L9 Chip Inductor 0402 1.5N Panasonic ELJ-RF1N5DFB

L10 Chip Inductor 0402 2.2N Panasonic ELJ-RF2N2DFB

L11 Chip Inductor 0402 2.7N Panasonic ELJ-RF2N7DFB

R1 Chip Resistor 0402 10Ohms 5% Dale CRCW040210R0JNED

R2 Not Used

R3 Chip Resistor 0402 2.2Ohms 5% Dale CRCW04022R20JNED

R4 Chip Resistor 0402 10K 5% Dale CRCW040210K0JNED

R7 Not Used

R8 Not Used

S Shield-Custom TBD

X1 20 MHz Crystal Abracon ABM8-156-20.0000MHZ-T

TABLE 2-1: MRF24J40MB BILL OF MATERIALS (CONTINUED)

Designator Description Manufacturer Part Number

Note: Capacitors and inductors cannot be substituted.

MRF24J40MB

2.2 Printed Circuit Board

The MRF24J40MB module printed circuit board is con-

structed with FR4 material, four layers and

0.032 inches thick. The layers are shown in Figure 2-2

through Figure 2-6. The stack up of the PCB is shown

in Figure 2-7.

FIGURE 2-2: TOP SILK SCREEN

FIGURE 2-3: TOP COPPER FIGURE 2-4: LAYER 2 – GROUND

PLANE

Note: Top view positive Gerber.

MRF24J40MB

FIGURE 2-5: LAYER 3 – POWER

PLANE FIGURE 2-6: BOTTOM COPPER

FIGURE 2-7: PCB LAYER STACK UP

Note: Top view positive Gerber.

Note: Top view.

Top Copper

Ground Plane

Power Plane

Bottom Copper

1/2 oz. Copper

8 mil FR4

12 mil FR4

8 mil FR4

0.032‚

+/- 0.005‚

MRF24J40MB

2.3 PCB Antenna

The PCB antenna is fabricated on the top copper trace.

Figure 2-8 shows the trace dimensions. The layers

below the antenna have no copper traces. The ground

and power planes under the components serve as a

counterpoise to the PCB antenna. Additional ground

plane on the host PCB will substantially enhance the

performance of the module. For best performance,

place the module on the host PCB following the

recommendations in Section 1.2 “Mounting Details”.

The Printed Circuit Board (PCB) antenna was designed

and simulated using Ansoft Designer® and HFSS™ 3D

full-wave solver software by Ansoft Corporation

(www.ansoft.com). The design goal was to create a

compact, low-cost antenna with the best radiation

pattern. Figure 2-9 shows the simulation drawing and

Figure 2-10 and Figure 2-11 show the 2D and 3D

radiation patterns, respectively. As shown by the

radiation patterns, the performance of the antenna is

dependant upon the orientation of the module.

Figure 2-12 shows the impedance simulation and

Figure 2-13 shows the SWR simulation. The discrete

matching circuitry matches the impedance of the

antenna with the MRF24J40 transceiver IC.

FIGURE 2-8: PCB ANTENNA DIMENSIONS

1.0

1.0 1.0 1.0

0.72

3.37

0.85 0.5

3.82

4.2

6.6

4.3

1.2

1.3

2.0

3.8

5.3

8.6

22.0

1.2

6.0

1.54

0.5

9.6

2.0 6.6

Note 1: Dimensions are in mm and tolerance is +/– 0.05 mm.

MRF24J40MB

FIGURE 2-9: PCB ANTENNA SIMULATION DRAWING

FIGURE 2-10: SIMULATED 2D RADIATION PATTERN

MRF24J40MB

FIGURE 2-11: SIMULATED 3D RADIATION PATTERN

FIGURE 2-12: SIMULATED PCB ANTENNA IMPEDANCE

MRF24J40MB

FIGURE 2-13: SIMULATED PCB ANTENNA SWR

MRF24J40MB

3.0 REGULATORY APPROVAL

The MRF24J40MB module has received regulatory

approvals for modular devices in the United States,

Canada and European countries. Modular approval

allows the end user to place the MRF24J40MB module

inside a finished product and not require regulatory

testing for an intentional radiator (RF transmitter), pro-

vided no changes or modifications are made to the

module circuitry. Changes or modifications could void

the user’s authority to operate the equipment. The end

user must comply with all of the instructions provided

by the Grantee, which indicate installation and/or

operating conditions necessary for compliance.

The integrator may still be responsible for testing the end

product for any additional compliance requirements

required with this module, installed (for example: digital

device emission, PC peripheral requirements, etc.) in

the specific country that the end device will be marketed.

Annex F of the IEEE Std. 802.15.4 document has a good

summary of regulatory requirements in various countries

concerning IEEE Std. 802.15.4 devices. The standard

can be downloaded from the IEEE Standards web page:

http://standards.ieee.org/getieee802/802.15.html.

Refer to the specific country radio regulations for

details on regulatory compliance.

3.1 United States

The MRF24J40MB has received Federal

Communications Commission (FCC) CFR47

Telecommunications, Part 15 Subpart C “Intentional

Radiators” 15.247 and modular approval in accordance

with FCC Public Notice DA 00-1407 Released: June 26,

2000, Part 15 Unlicensed Modular Transmitter Approval.

The MRF24J40MB module can be integrated into a

finished product without obtaining subsequent and

separate FCC approvals.

The MRF24J40MB module has been labeled with its

own FCC ID number, and if the FCC ID is not visible

when the module is installed inside another device,

then the outside of the finished product into which the

module is installed must also display a label referring to

the enclosed module. This exterior label can use

wording such as the following:

The user’s manual should include the following

statement:

3.1.1 MRF24J40MB SETTINGS

To meet the FCC requirements, the following settings

must be observed by the integrator:

• The MRF24J40MB transmit power setting

(RFCON3 0x203) cannot exceed -1.9 dB.

• Only channels 11 through 25 may be selected

(RFCON0 0x200).

3.1.2 RF EXPOSURE

All transmitters regulated by FCC must comply with RF

exposure requirements. OET Bulletin 65 “Evaluating

Compliance with FCC Guidelines for Human Exposure

to Radio Frequency Electromagnetic Fields” provides

assistance in determining whether proposed or existing

transmitting facilities, operations or devices comply

with limits for human exposure to Radio Frequency

(RF) fields adopted by the Federal Communications

Commission (FCC). The bulletin offers guidelines and

suggestions for evaluating compliance.

If appropriate, compliance with exposure guidelines for

mobile and unlicensed devices can be accomplished

by the use of warning labels and by providing users

with information concerning minimum separation

distances from transmitting structures and proper

installation of antennas.

Contains Transmitter Module FCC ID:

OA3MRF24J40MB

-or-

Contains FCC ID: OA3MRF24J40MB

This device complies with Part 15 of the FCC Rules.

Operation is subject to the following two conditions:

(1) this device may not cause harmful interference,

and (2) this device must accept any interference

received, including interference that may cause

undesired operation.

This equipment has been tested and found to comply

with the limits for a Class B digital device, pursuant to

part 15 of the FCC Rules. These limits are designed to

provide reasonable protection against harmful

interference in a residential installation. This

equipment generates, uses and can radiate radio

frequency energy, and if not installed and used in

accordance with the instructions, may cause harmful

interference to radio communications. However, there

is no guarantee that interference will not occur in a

particular installation. If this equipment does cause

harmful interference to radio or television reception,

which can be determined by turning the equipment off

and on, the user is encouraged to try to correct the

interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment

and receiver.

• Connect the equipment into an outlet on a

circuit different from that to which the receiver is

connected.

• Consult the dealer or an experienced radio/TV

technician for help.

MRF24J40MB

The following statement must be included as a

CAUTION statement in manuals and OEM products to

alert users of FCC RF exposure compliance:

If the MRF24J40MB module is used in a portable

application (antenna is less than 20 cm from persons

during operation), the integrator is responsible for

performing Specific Absorption Rate (SAR) testing in

accordance with FCC rules 2.1091.

3.1.3 HELPFUL WEB SITES

Federal Communications Commission (FCC):

http://www.fcc.gov

3.2 Canada

The MRF24J40MB module has been certified for use in

Canada under Industry Canada (IC) Radio Standards

Specification (RSS) RSS-210 and RSS-Gen.

From Section 7.1.1, RSS-Gen, Issue 2, June 2007,

Modular Transmitter Approval:

Host devices which contain separately certified

modules do not need to be recertified, provided that

they meet the following conditions:

a) The host device, as a stand-alone unit

without any separately certified modules,

complies with all applicable Radio Standards

Specifications.

b) The host device and all the separately

certified modules it contains jointly meet the

RF exposure compliance requirements of

RSS-102, if applicable.

c) The host device complies with the

certification labeling requirements of each of

the modules it contains.

From Section 5.2, RSS-Gen, Issue 2, June 2007,

Equipment Labels:

All Category I radio equipment intended for use in

Canada shall permanently display on each transmitter,

receiver or inseparable combination thereof, the

applicant’s name (i.e., manufacturer’s name, trade

name or brand name), model number and certification

number. This information shall be affixed in such a

manner as to not be removable except by destruction or

defacement. The size of the lettering shall be legible

without the aid of magnification, but is not required to be

larger than an 8-point font size. If the device is too small

to meet this condition, the information can be included in

the user manual upon agreement with Industry Canada.

Label:

From Section 7.1.6, RSS-Gen, Issue 2, June 2007,

Digital Circuits:

If the device contains digital circuitry that is not directly

associated with the radio transmitter, the device shall

also have to comply with ICES-003, Class A or B as

appropriate, except for ICES-003 labeling

requirements. The test data obtained (for the ICES-003

tests) shall be kept by the manufacturer or importer

whose name appears on the equipment label, and

made available to Industry Canada on request, for as

long as the model is being marketed in Canada.

3.2.1 MRF24J40MB SETTINGS

To meet Industry Canada (IC) requirements, the following

settings must be observed by the integrator:

• The MRF24J40MB transmit power setting

(RFCON3 0x203) cannot exceed -1.9 dB.

• Only channels 11 through 25 may be selected

(RFCON0 0x200).

3.2.2 HELPFUL WEB SITES

Industry Canada: http://www.ic.gc.ca/

Note: Compliance of a module in its final

configuration is the responsibility of the

applicant. A host device will not be

considered certified if the instructions

regarding antenna configuration provided

in the original description, of one or more

separately certified modules it contains,

were not followed

To satisfy FCC RF exposure requirements for mobile

and base station transmission devices, a separation

distance of 20 cm or more should be maintained

between the antenna of this device and persons

during operation. To ensure compliance, operation at

closer than this distance is not recommended.

The antenna(s) used for this transmitter must not be

co-located or operating in conjunction with any other

antenna or transmitter.

Contains IC: 7693A-24J40MB

MRF24J40MB

3.3 Europe

The MRF24J40MB module has been certified for use in

European countries. The following testing has been

completed:

Test standard ETSI EN 300 328 V1.7.1 (2006-10):

• Maximum Transmit Power

• Maximum EIRP Spectral Density

• Frequency Range

• Radiated Emissions

Test standards ETSI EN 301 489-1:2008 and ETSI

EN 301 489-17:2008:

• Radiated Emissions

• Electrostatic Discharge

• Radiated RF Susceptibility

A helpful document that can be used as a starting point

in understanding the use of Short Range Devices (SRD)

in Europe is the European Radio Communications

Committee (ERC) Recommendation 70-03 E,

downloadable from the European Radio

Communications Office (ERO): http://www.ero.dk.

The end user is responsible for ensuring compliance

with harmonized frequencies and labeling

requirements for each country the end device is

marketed and sold.

3.3.1 MRF24J40MB SETTINGS

To meet ETSI requirements, the following settings must

be observed by the integrator:

• The MRF24J40MB transmit power setting

(RFCON3 0x203) cannot exceed -14.9 dB. This is

to meet the requirements of ETSI EN 300 328

v1.7.1 (2006-05), Maximum e.i.r.p. spectral

density limit, Section 4.3.2.2, “For wideband

modulations other then FHSS (e.g., DSSS,

OFDM, etc.), the maximum e.i.r.p. spectral

density is limited to 10 mW per MHz”. The output

power of the MRF24J40MB module, at this setting

with the PA enabled, is 9 dBm.

• Only channels 11 through 25 may be selected

(RFCON0 0x200).

3.3.2 HELPFUL WEB SITES:

Radio and Telecommunications Terminal Equipment

(R&TTE):

http://ec.europa.eu/enterprise/rtte/index_en.htm

European Conference of Postal and Telecommunications

Administrations (CEPT): http://www.cept.org/

European Telecommunications Standards Institute

(ETSI): http://www.etsi.org/

European Radio Communications Office (ERO):

http://www.ero.dk/

MRF24J40MB

NOTES:

MRF24J40MB

4.0 ELECTRICAL CHARACTERISTICS

TABLE 4-1: RECOMMENDED OPERATING CONDITIONS

Parameters Min Typ Max Units

Ambient Operating Temperature -40 — +85 °C

Supply Voltage for RF, Analog and

Digital Circuits 2.4 — 3.6 V

Supply Voltage for Digital I/O 2.4 3.3 3.6 V

Input High Voltage (VIH) 0.5 x VDD —VDD + 0.3 V

Input Low Voltage (VIL) -0.3 — 0.2 x VDD V

TABLE 4-2: CURRENT CONSUMPTION

(TA = 25°C, VDD = 3.3V)

Chip Mode Condition Min Typ Max Units

Sleep Sleep Clock Disabled — 5 μA— μA

TX At Maximum Output Power — 130 mA — mA

RX — 25 mA — mA

TABLE 4-3: RECEIVER AC CHARACTERISTICS

Typical values are at TA = 25°C, VDD = 3.3V, LO Frequency = 2.445 GHz

Parameters Condition Min Typ Max Units

RF Input Frequency Compatible to

IEEE Std. 802.15.4™, 2003 2.405 — 2.480 GHz

RF Sensitivity — -102 — dBm

Maximum RF Input -23 — — dBm

LO Leakage Measured at Balun Matching

Network Input at Frequency,

2.405-2.48 GHz

—-60—dBm

Input Return Loss -8 -12 — dB

Noise Figure

(including matching) —1.9—dB

Adjacent Channel

Rejection @ +/-5 MHz 30 — — dB

Alternate Channel

Rejection @ +/-10 MHz 40 — — dB

RSSI Range — 50 — dB

RSSI Error -5 — 5 dB

MRF24J40MB

TABLE 4-4: TRANSMITTER AC CHARACTERISTICS

Typical values are at TA = 25°C, VDD = 3.3V, LO Frequency = 2.445 GHz

Parameters Condition Min Typ Max Units

RF Carrier Frequency 2.405 — 2.480 GHz

Maximum RF Output

Power —20—dBm

RF Output Power

Control Range —56—dB

TX Gain Control

Resolution Programmed by Register — 1.25 — dB

Carrier Suppression — -30 — dBc

TX Spectrum Mask for

O-QPSK Signal Offset Frequency > 3.5 MHz,

at 0 dBm Output Power -33 — — dBm

TX EVM — 15 — %

MRF24J40MB

APPENDIX A: REVISION HISTORY

Revision A (June 2009)

Original release of this document.

Revision B (July 2009)

Added Section 3.0 “Regulatory Approval”.

MRF24J40MB

NOTES:

MRF24J40MB

INDEX

AC Characteristics

Receiver ......................................................................21

Transmitter ..................................................................22

Antenna Impedance

Simulated PCB............................................................15

Bill of Materials (BOM) ..........................................................9

Block Diagrams

Microcontroller to MRF24J40MB Interface....................4

MRF24J40MB ...............................................................3

Circuit Description .................................................................7

Customer Change Notification Service ...............................26

Customer Notification Service.............................................26

Customer Support ...............................................................26

Details

Module ..........................................................................5

Mounting .......................................................................6

Recommended PCB Footprint ......................................5

Electrical Characteristics.....................................................21

Current Consumption..................................................21

Recommended Operating Conditions .........................21

Errata.....................................................................................2

European Radio Communications (ERC)............................19

FCC ID Number...................................................................17

FCC RF Exposure Compliance...........................................18

Helpful Web Sites..........................................................18, 19

Interface Description .............................................................3

Internet Address..................................................................26

MAC/Baseband Features......................................................1

Microchip Internet Web Site ................................................26

MiWi P2P...............................................................................3

MiWi Protocol ........................................................................3

More Information ...................................................................2

Customer Notification System.......................................2

Errata ............................................................................2

Mounting Details....................................................................5

MRF24J40 Data Sheet......................................................3, 7

Overview ...............................................................................3

PCB Antenna ...................................................................... 13

Dimensions ................................................................. 13

Simulation Drawing..................................................... 14

SWR ........................................................................... 16

PCB Layers

Bottom Copper............................................................ 12

Layer 2 – Ground Plane.............................................. 11

Layer 3 – Power Plane ............................................... 12

Stack Up ..................................................................... 12

Top Copper................................................................. 11

Top Silk Screen .......................................................... 11

Pin Description...................................................................... 4

Pin Diagram .......................................................................... 1

Printed Circuit Board (PCB)................................................ 11

Radiation Pattern

2D ............................................................................... 14

3D ............................................................................... 15

Reader Response............................................................... 27

Regulatory Approval ........................................................... 17

Canada ....................................................................... 18

Settings............................................................... 18

Europe ........................................................................ 19

Settings............................................................... 19

United States .............................................................. 17

Settings............................................................... 17

Revision History .................................................................. 23

RF Exposure....................................................................... 17

RF/Analog Features.............................................................. 1

Schematic

MRF24J40MB............................................................... 8

Serial I/O

SCK, SDI, SDO, CS...................................................... 7

Short Range Devices (SRD) ............................................... 19

Specific Absorption Rate (SAR).......................................... 18

SPI ........................................................................................ 7

WWW Address.................................................................... 26

WWW, On-Line Support ....................................................... 2

ZigBee Protocol .................................................................... 3

MRF24J40MB

NOTES:

MRF24J40MB

THE MICROCHIP WEB SITE

Microchip provides online support via our WWW site at

www.microchip.com. This web site is used as a means

to make files and information easily available to

customers. Accessible by using your favorite Internet

browser, the web site contains the following

information:

•Product Support – Data sheets and errata,

application notes and sample programs, design

resources, user’s guides and hardware support

documents, latest software releases and archived

software

•General Technical Support – Frequently Asked

Questions (FAQ), technical support requests,

online discussion groups, Microchip consultant

program member listing

•Business of Microchip – Product selector and

ordering guides, latest Microchip press releases,

listing of seminars and events, listings of

Microchip sales offices, distributors and factory

representatives

CUSTOMER CHANGE NOTIFICATION

SERVICE

Microchip’s customer notification service helps keep

customers current on Microchip products. Subscribers

will receive e-mail notification whenever there are

changes, updates, revisions or errata related to a

specified product family or development tool of interest.

To register, access the Microchip web site at

www.microchip.com, click on Customer Change

Notification and follow the registration instructions.

CUSTOMER SUPPORT

Users of Microchip products can receive assistance

through several channels:

• Distributor or Representative

• Local Sales Office

• Field Application Engineer (FAE)

• Technical Support

• Development Systems Information Line

Customers should contact their distributor,

representative or field application engineer (FAE) for

support. Local sales offices are also available to help

customers. A listing of sales offices and locations is

included in the back of this document.

Technical support is available through the web site

at: http://support.microchip.com

MRF24J40MB

READER RESPONSE

It is our intention to provide you with the best documentation possible to ensure successful use of your Microchip

product. If you wish to provide your comments on organization, clarity, subject matter, and ways in which our

documentation can better serve you, please FAX your comments to the Technical Publications Manager at (480) 792-

4150.

Please list the following information, and use this outline to provide us with your comments about this document.

To: Technical Publications Manager

RE: Reader Response

Total Pages Sent ________

From: Name

Company

Address

City / State / ZIP / Country

Telephone: (_______) _________ - _________

Application (optional):

Would you like a reply? Y N

Device: Literature Number:

Questions:

FAX: (______) _________ - _________

DS70599BMRF24J40MB

1. What are the best features of this document?

2. How does this document meet your hardware and software development needs?

3. Do you find the organization of this document easy to follow? If not, why?

4. What additions to the document do you think would enhance the structure and subject?

5. What deletions from the document could be made without affecting the overall usefulness?

6. Is there any incorrect or misleading information (what and where)?

7. How would you improve this document?

MRF24J40MB

PRODUCT IDENTIFICATION SYSTEM

To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.

PART NO. -XX T

Tape andModule Temperature

Range

Device

Device MRF24J40MB;

VDD range 2.4V to 3.6V

Temperature Range I = -40°C to +85°C (Industrial)

Examples:

a) MRF24J40MB-I = Industrial temp. tray

b) MRF24J40MBT-I = Industrial temp., tape and

reel.

Module Type Reel

AMERICAS

Corporate Office

2355 West Chandler Blvd.

Chandler, AZ 85224-6199

Tel: 480-792-7200

Fax: 480-792-7277

Technical Support:

http://support.microchip.com

Web Address:

www.microchip.com

Atlanta

Duluth, GA

Tel: 678-957-9614

Fax: 678-957-1455

Boston

Westborough, MA

Tel: 774-760-0087

Fax: 774-760-0088

Chicago

Itasca, IL

Tel: 630-285-0071

Fax: 630-285-0075

Cleveland

Independence, OH

Tel: 216-447-0464

Fax: 216-447-0643

Dallas

Addison, TX

Tel: 972-818-7423

Fax: 972-818-2924

Detroit

Farmington Hills, MI

Tel: 248-538-2250

Fax: 248-538-2260

Kokomo

Kokomo, IN

Tel: 765-864-8360

Fax: 765-864-8387

Los Angeles

Mission Viejo, CA

Tel: 949-462-9523

Fax: 949-462-9608

Santa Clara

Santa Clara, CA

Tel: 408-961-6444

Fax: 408-961-6445

Toronto

Mississauga, Ontario,

Canada

Tel: 905-673-0699

Fax: 905-673-6509

ASIA/PACIFIC

Asia Pacific Office

Suites 3707-14, 37th Floor

Tower 6, The Gateway

Harbour City, Kowloon

Hong Kong

Tel: 852-2401-1200

Fax: 852-2401-3431

Australia - Sydney

Tel: 61-2-9868-6733

Fax: 61-2-9868-6755

China - Beijing

Tel: 86-10-8528-2100

Fax: 86-10-8528-2104

China - Chengdu

Tel: 86-28-8665-5511

Fax: 86-28-8665-7889

China - Hong Kong SAR

Tel: 852-2401-1200

Fax: 852-2401-3431

China - Nanjing

Tel: 86-25-8473-2460

Fax: 86-25-8473-2470

China - Qingdao

Tel: 86-532-8502-7355

Fax: 86-532-8502-7205

China - Shanghai

Tel: 86-21-5407-5533

Fax: 86-21-5407-5066

China - Shenyang

Tel: 86-24-2334-2829

Fax: 86-24-2334-2393

China - Shenzhen

Tel: 86-755-8203-2660

Fax: 86-755-8203-1760

China - Wuhan

Tel: 86-27-5980-5300

Fax: 86-27-5980-5118

China - Xiamen

Tel: 86-592-2388138

Fax: 86-592-2388130

China - Xian

Tel: 86-29-8833-7252

Fax: 86-29-8833-7256

China - Zhuhai

Tel: 86-756-3210040

Fax: 86-756-3210049

ASIA/PACIFIC

India - Bangalore

Tel: 91-80-3090-4444

Fax: 91-80-3090-4080

India - New Delhi

Tel: 91-11-4160-8631

Fax: 91-11-4160-8632

India - Pune

Tel: 91-20-2566-1512

Fax: 91-20-2566-1513

Japan - Yokohama

Tel: 81-45-471- 6166

Fax: 81-45-471-6122

Korea - Daegu

Tel: 82-53-744-4301

Fax: 82-53-744-4302

Korea - Seoul

Tel: 82-2-554-7200

Fax: 82-2-558-5932 or

82-2-558-5934

Malaysia - Kuala Lumpur

Tel: 60-3-6201-9857

Fax: 60-3-6201-9859

Malaysia - Penang

Tel: 60-4-227-8870

Fax: 60-4-227-4068

Philippines - Manila

Tel: 63-2-634-9065

Fax: 63-2-634-9069

Singapore

Tel: 65-6334-8870

Fax: 65-6334-8850

Taiwan - Hsin Chu

Tel: 886-3-6578-300

Fax: 886-3-6578-370

Taiwan - Kaohsiung

Tel: 886-7-536-4818

Fax: 886-7-536-4803

Taiwan - Taipei

Tel: 886-2-2500-6610

Fax: 886-2-2508-0102

Thailand - Bangkok

Tel: 66-2-694-1351

Fax: 66-2-694-1350

EUROPE

Austria - Wels

Tel: 43-7242-2244-39

Fax: 43-7242-2244-393

Denmark - Copenhagen

Tel: 45-4450-2828

Fax: 45-4485-2829

France - Paris

Tel: 33-1-69-53-63-20

Fax: 33-1-69-30-90-79

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Tel: 49-89-627-144-0

Fax: 49-89-627-144-44

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Fax: 39-0331-466781

Netherlands - Drunen

Tel: 31-416-690399

Fax: 31-416-690340

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Tel: 34-91-708-08-90

Fax: 34-91-708-08-91

UK - Wokingham

Tel: 44-118-921-5869

Fax: 44-118-921-5820

WORLDWIDE SALES AND SERVICE

03/26/09

Microchip Technology MRF24J40MB Spread Spectrum Transmitter User Manual MRF24J40MA

Microchip Technology Inc Spread Spectrum Transmitter MRF24J40MA

Users Manual

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