mrf89xam9a Microchip Technology Inc., mrf89xam9a Datasheet

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mrf89xam9a

Manufacturer Part Number
mrf89xam9a
Description
915 Mhz Ultra Low-power Sub-ghz Transceiver Module
Manufacturer
Microchip Technology Inc.
Datasheet

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MRF89XAM9A
Data Sheet
915 MHz Ultra Low-Power Sub-GHz
Transceiver Module
Preliminary
© 2011 Microchip Technology Inc.
DS75017A

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mrf89xam9a Summary of contents

Page 1

... MHz Ultra Low-Power Sub-GHz © 2011 Microchip Technology Inc. MRF89XAM9A Data Sheet Transceiver Module Preliminary DS75017A ...

Page 2

... 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. Preliminary L logo, MPLAB, PIC, PICmicro, PICSTART MCUs and dsPIC DSCs code hopping ® ® ® © 2011 Microchip Technology Inc. ...

Page 3

... Rx mode (typical mode +10 dBm (typical) - Sleep: 0.1 µA (typical) Pin diagram RESET CSCON © 2011 Microchip Technology Inc. MRF89XAM9A RF/Analog Features • ISM Band 902–928 MHz Operation • Modulation: FSK and OOK Environment • Data Rate: - FSK: 200 kbps - OOK: 28 kbps • ...

Page 4

... MRF89XAM9A Table of Contents 1.0 Device Overview .......................................................................................................................................................................... 3 2.0 Circuit Description ........................................................................................................................................................................ 9 3.0 Regulatory Approval ................................................................................................................................................................... 17 4.0 Electrical Characteristics ............................................................................................................................................................ 21 Appendix A: Revision History............................................................................................................................................................... 27 The Microchip Web Site ....................................................................................................................................................................... 29 Customer Change Notification Service ................................................................................................................................................ 29 Customer Support ................................................................................................................................................................................ 29 Reader Response ................................................................................................................................................................................ 30 Product Identification System............................................................................................................................................................... 31 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 products ...

Page 5

... United States (FCC) and Canada (IC). Modular device approval removes the need for expensive RF and antenna design, and allows the user to place the MRF89XAM9A module inside a finished product and not require regulatory testing for an intentional radiator (RF transmitter). To maintain conformance, refer to module settings in Section 3 ...

Page 6

... IRQ0 5 SDI 6 SCK 7 SDO 8 CSDATA 9 IRQ1 10 Vin 11 GND 12 GND FIGURE 1-2: MICROCONTROLLER TO MRF89XAM9A INTERFACE MRF89XAM9A V IN GND DS75017A-page 4 Type Power Ground DI Reset Pin. For more information, refer to DI Serial Interface Configure Chip Select DO Interrupt Request Output DI Serial Interface Data Input DI Serial Interface Clock ...

Page 7

... Figure 1-4 is cm), be kept clear of metal objects for best performance. A host PCB ground plane around the MRF89XAM9A acts as a counterpoise to the PCB antenna recommended to extend the ground plane at least 0.4" (1 cm) around the module. Preliminary MRF89XAM9A 1-5 ...

Page 8

... MRF89XAM9A FIGURE 1-5: MOUNTING DETAILS Edge of PCB Host PCB top copper ground plane (antenna counterpoise): Extend the host PCB top copper ground plane under and to the left and right side of the module at least 0.4 inches (1 cm) for best antenna performance. DS75017A-page 6 Keep area around the antenna, approximately 3.4” ...

Page 9

... Pin 2 of the module, RESET, allows an external reset of the MRF89XA IC. RESET is connected to the TEST8 pin of the MRF89XA IC. During normal operations of the MRF89XAM9A, the RESET pin should be held in a high impedance state. For more information on assertion of the RESET pin, refer to “Section 3.1.2 Manual Reset” in the “MRF89XA Data Sheet” ...

Page 10

... MRF89XAM9A NOTES: DS75017A-page 8 Preliminary © 2011 Microchip Technology Inc. ...

Page 11

... CIRCUIT DESCRIPTION The MRF89XAM9A module interfaces to Microchip’s PIC16, PIC18, PIC24, dsPIC33 microcontrollers with a minimum components through digital only connections. An example application schematic is shown in FIGURE 2-1: MRF89XAM9A APPLICATION SCHEMATIC CSCON To Host 4 Microcontroller IRQ0 5 SDI 6 SCK For battery powered applications, place a 10 μF capacitor in parallel with the 0.1 μF bypass Note: capacitor to provide a low impedance during startup sequences ...

Page 12

... FIGURE 2-2: MRF89XAM9A SCHEMATIC Designators not used: C6, L5 Note: ...

Page 13

... TABLE 2-1: MRF89XAM9A BILL OF MATERIALS Desi gnat Value Description or C1 0.047 µF Capacitor, Ceramic, 10V, ±10%, X7R, SMT 0402 C2 0.22 µF Capacitor, Ceramic, 16V, ±10%, X7R, SMT 0402 C3 1 µF Capacitor, Ceramic, 6.3V, ±10%, X5R, SMT 0603 Capacitor, Ceramic, 50V, ±5%, UHI-Q NP0, ...

Page 14

... MRF89XAM9A 2.2 Printed Circuit Board The MRF89XAM9A module PCB is constructed with high temperature FR4 material that is four layers and 0.032 inches thick. The layers are shown in through Figure 2-8. The PCB layer stack up is shown in Figure 2-9 FIGURE 2-3: TOP SILK SCREEN FIGURE 2-4: TOP COPPER ...

Page 15

... BOTTOM COPPER FIGURE 2-9: PCB LAYER STACK UP 0.032” ±0.005” © 2011 Microchip Technology Inc. FIGURE 2-8: 1/2 oz. Copper 8 mil FR4 1/2 oz. Copper 12 mil FR4 1/2 oz. Copper 8 mil FR4 1/2 oz. Copper Preliminary MRF89XAM9A BOTTOM SILK SCREEN Top Copper Ground Plane Power Plane Bottom Copper DS75017A-page 13 ...

Page 16

... MRF89XAM9A 2.3 PCB Antenna The PCB antenna is fabricated on the top copper trace. Figure 2-10 shows the PCB antenna 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 ...

Page 17

... FIGURE 2-12: SIMULATED 2D RADIATION PATTERN FIGURE 2-13: SIMULATED 3D RADIATION PATTERN © 2011 Microchip Technology Inc. MRF89XAM9A Preliminary DS75017A-page 15 ...

Page 18

... MRF89XAM9A FIGURE 2-14: SIMULATED PCB ANTENNA IMPEDANCE FIGURE 2-15: MEASURED ANTENNA IMPEDANCE (915 MHZ BAND) DS75017A-page 16 Preliminary © 2011 Microchip Technology Inc. ...

Page 19

... The MRF89XAM9A module has received regulatory approvals for modular devices in the United States and Canada. Modular device approval allows the end user to place the MRF89XAM9A module inside a finished product and not require regulatory testing for an intentional radiator (RF transmitter), provided no changes or modifications are made to the module circuitry. Changes or modifications could void the user’ ...

Page 20

... The antenna(s) used for this transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. If the MRF89XAM9A 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 ...

Page 21

... Canada The MRF89XAM9A module has been certified for use in Canada under Industry Canada (IC) Radio Standards Specification (RSS) RSS-210 and RSS-Gen. Modular approval permits the installation of a module in a host device without the need to recertify the device. Labeling Requirements for the Host Device (from Section 3 ...

Page 22

... MRF89XAM9A NOTES: DS75017A-page 20 Preliminary © 2011 Microchip Technology Inc. ...

Page 23

... This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. © 2011 Microchip Technology Inc. (except V SS )........................................................................................... - Preliminary MRF89XAM9A ) ...........................-0. 0.3V DS75017A-page 21 ...

Page 24

... MRF89XAM9A TABLE 4-1: RECOMMENDED OPERATING CONDITIONS Parameter Ambient Operating Temperature Supply Voltage for RF, Analog and Digital Circuits Supply Voltage for Digital I/O Input High Voltage ( Input Low Voltage ( Peak Voltage on Open Collector Outputs (IO) At minimum, V – 1.5V should not be lower than 1.8V. Note 1: ...

Page 25

... TSFS Frequency Synthesizer Wake- up Time; at most, 10 kHz away from the target TSHOP Frequency Synthesizer Hop Time; at most, 10 kHz away from the target Guaranteed by design and characterization. Note 1: © 2011 Microchip Technology Inc. MRF89XAM9A (1) Min Typ Max Unit 902 — 928 MHz 2 — ...

Page 26

... MRF89XAM9A TABLE 4-5: RECEIVER AC CHARACTERISTICS Symbol Parameter RSF Sensitivity (FSK) RSO Sensitivity (OOK) CCR Co-Channel Rejection ACR Adjacent Channel Rejection BI Blocking Immunity RXBWF Receiver Bandwidth in FSK (2) Mode RXBWU Receiver Bandwidth in OOK (2) Mode ITP3 Input Third Order Intercept Point TSRWF Receiver Wake-up Time ...

Page 27

... Crystal Frequency = 12.8 MHz, unless otherwise specified. IN Preliminary MRF89XAM9A Unit Condition dBm Maximum power setting dBm Minimum power setting Measured with a 600 kHz offset at the transmitter output dBc At any offset between 200 kHz and 600 kHz, unmodulated ...

Page 28

... MRF89XAM9A NOTES: DS75017A-page 26 Preliminary © 2011 Microchip Technology Inc. ...

Page 29

... APPENDIX A: REVISION HISTORY Revision A (July 2011) This is the Initial release of the document. © 2011 Microchip Technology Inc. MRF89XAM9A Preliminary DS75017A-page 27 ...

Page 30

... MRF89XAM9A NOTES: DS75017A-page 28 Preliminary © 2011 Microchip Technology Inc. ...

Page 31

... 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://microchip.com/support click on Preliminary MRF89XAM9A should contact their distributor, DS75017A-page 29 ...

Page 32

... Telephone: (_______) _________ - _________ Application (optional): Would you like a reply? Y Device: MRF89XAM9A Questions: 1. What are the best features of this document? 2. How does this document meet your hardware and software development needs you find the organization of this document easy to follow? If not, why? 4 ...

Page 33

... To order or obtain information, for example, on pricing or delivery, refer to the factory or the listed sales office M X PART NO Device Module Module Type Device MRF89XAM9A-I/RM: Ultra Low-Power, Integrated ISM Band Sub-GHz Transceiver module Temperature I = -40ºC to +85ºC (Industrial) Range © 2011 Microchip Technology Inc ...

Page 34

... 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: 886-7-213-7830 Fax: 886-7-330-9305 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2011 Microchip Technology Inc. 05/02/11 ...

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