mrf89xam8a Microchip Technology Inc., mrf89xam8a Datasheet

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mrf89xam8a

Manufacturer Part Number
mrf89xam8a
Description
868 Mhz Ultra-low Power Sub-ghz Transceiver Module
Manufacturer
Microchip Technology Inc.
Datasheet

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MRF89XAM8A
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mrf89xam8a-I/RM
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MRF89XAM8A
Data Sheet
868 MHz Ultra-Low Power
Sub-GHz Transceiver Module
Preliminary
© 2010 Microchip Technology Inc.
DS70651A

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mrf89xam8a Summary of contents

Page 1

... Microchip Technology Inc. MRF89XAM8A 868 MHz Ultra-Low Power Sub-GHz Transceiver Module Preliminary Data Sheet DS70651A ...

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 logo, MPLAB, PIC, PICmicro, PICSTART, DSCs code hopping ® ® © 2010 Microchip Technology Inc. ...

Page 3

... Tx mode +10 dBm (typical) - Sleep: 0.1 µA (typical) Pin diagram RESET CSCON © 2010 Microchip Technology Inc. MRF89XAM8A RF/Analog Features • 863–870 MHz operation • Modulation: FSK and OOK • Data rate (to conform to ETSI standards): - FSK: 40 kbps - OOK: 16 kbps • ...

Page 4

... MRF89XAM8A Table of Contents .0 Device Overview .......................................................................................................................................................................... 3 2.0 Circuit Description ........................................................................................................................................................................ 9 3.0 Regulatory Approval ................................................................................................................................................................... 19 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

... SAW Filter © 2010 Microchip Technology Inc. 1.1 Interface description The simplified block diagram of the MRF89XAM8A module is illustrated in on the Microchip Technology MRF89XA ultra-low power sub-GHz transceiver Integrated Circuit (IC). The module interfaces to many popular Microchip PIC microcontrollers through a 3-wire serial SPI interface, ...

Page 6

... IRQ0 5 SDI 6 SCK 7 SDO 8 CSDATA 9 IRQ1 10 Vin 11 GND 12 GND FIGURE 1-2: MICROCONTROLLER TO MRF89XAM8A INTERFACE MRF89XAM8A Vin GND DS70651A-page 4 Type Power DI DI Serial Interface Configure Chip Select DO Interrupt Request Output DI Serial Interface Data Input DI Serial Interface Clock DO Serial Interface Data Output DI Serial Interface Data Chip Select ...

Page 7

... A host PCB ground plane around the MRF89XAM8A acts as a counterpoise to the PCB antenna. Extend the host PCB top copper ground plane under and to the left and right side of the module at least 0 ...

Page 8

... MRF89XAM8A FIGURE 1-4: RECOMMENDED PCB FOOTPRINT DS70651A-page 6 Preliminary © 2010 Microchip Technology Inc. ...

Page 9

... Microchip Technology Inc. 3.4” 0.470” 0.4” 0.4” Preliminary MRF89XAM8A Keep area around antenna (approximately 3.4 inches (8.6 cm)) clear of metallic structures for best performance. 3.4” DS70651A-page 7 ...

Page 10

... Pin 2 of the module, RESET, enables an external reset of the MRF89XA IC. RESET is connected to the TEST8 pin of the MRF89XA IC. During normal operations of the MRF89XAM8A, 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” of “MRF89XA Data Sheet” (DS70622). ...

Page 11

... Figure 2-1. 2.1 Module Schematic The MRF89XAM8A module is based on the Microchip Technology MRF89XA Ultra-Low Power, Integrated ISM Band sub-GHz Transceiver IC. The serial I/O (CSCON, CSDATA, SCK, SDO and SDI), RESET, IRQ0 and IRQ1 pins are brought to the module pins. Crystal 12.8 MHz crystal with a frequency tolerance of ± ...

Page 12

... FIGURE 2-2: MRF89XAM8A SCHEMATIC Note: Designators not used: C6, L5 ...

Page 13

... TABLE 2-1: MRF89XAM8A BILL OF MATERIALS Designator Value C1 0.047 µF Capacitor, Ceramic, 10V, ±10%, X7R, SMT C2 0.22 µF Capacitor, Ceramic, 16V, ±10%, X7R, SMT C3 1 µF Capacitor, Ceramic, 6.3V, ±10%, X5R, SMT Capacitor, Ceramic, 50V, ±5%, UHI-Q NP0, C5 1.8 pF Capacitor, Ceramic, 50V, ±0.1 pF, UHI-Q C6 — ...

Page 14

... MRF89XAM8A 2.2 Printed Circuit Board The MRF89XAM8A module PCB is constructed with high temperature FR4 material, 4 layers and 0.032 inches thick. These layers are shown in through Figure 2-8. The stack up of the PCB is shown in Figure 2-9 FIGURE 2-3: TOP SILK SCREEN FIGURE 2-4: TOP COPPER DS70651A-page 12 FIGURE 2-5: ...

Page 15

... FIGURE 2-7: BOTTOM COPPER FIGURE 2-8: BOTTOM SILK SCREEN © 2010 Microchip Technology Inc. MRF89XAM8A Preliminary DS70651A-page 13 ...

Page 16

... MRF89XAM8A FIGURE 2-9: PCB LAYER STACK UP 0.032” ± 0.005” 2.3 PCB Antenna The PCB antenna is fabricated on the top copper trace. Figure 2-10 illustrates 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 ...

Page 17

... FIGURE 2-11: PCB ANTENNA SIMULATION DRAWING FIGURE 2-12: SIMULATED 2D RADIATION PATTERN © 2010 Microchip Technology Inc. MRF89XAM8A Preliminary DS70651A-page 15 ...

Page 18

... MRF89XAM8A FIGURE 2-13: SIMULATED 3D RADIATION PATTERN FIGURE 2-14: SIMULATED PCB ANTENNA IMPEDANCE DS70651A-page 16 Preliminary © 2010 Microchip Technology Inc. ...

Page 19

... FIGURE 2-15: SIMULATED PCB ANTENNA VSWR © 2010 Microchip Technology Inc. MRF89XAM8A Preliminary DS70651A-page 17 ...

Page 20

... MRF89XAM8A NOTES: DS70651A-page 18 Preliminary © 2010 Microchip Technology Inc. ...

Page 21

... REGULATORY APPROVAL 3.1 Europe The MRF89XAM8A module conforms to the emission and immunity standards summarized in module tests can be applied toward final product certification and DoC. Note: To maintain conformance tested ETSI standards, the module shall not be modi- fied and settings in Section 1.3, Operation must be observed. ...

Page 22

... MRF89XAM8A NOTES: DS70651A-page 20 Preliminary © 2010 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. © 2010 Microchip Technology Inc. (except V SS )........................................................................................... - Preliminary MRF89XAM8A ) ...........................-0. 0.3V DS70651A-page 21 ...

Page 24

... MRF89XAM8A 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) Note 1: At minimum, V – 1.5V should not be lower than 1.8V. ...

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 Note 1: Guaranteed by design and characterization. © 2010 Microchip Technology Inc. MRF89XAM8A (1) Min Typ Max Unit 863 — 870 MHz 1.56 — ...

Page 26

... MRF89XAM8A 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

... Harmonics above Tx4 FSKDEV FSK Deviation TSTWF Transmitter Wake-up Time TSTWS Transmitter Wake-up Time Note 1: Guaranteed by design and characterization. 2: Transmitter in-circuit performance with SAW filter and crystal. © 2010 Microchip Technology Inc. MRF89XAM8A (1) Min Typ Max Unit — +12.5 — dBm — -8.5 — ...

Page 28

... MRF89XAM8A 4.1 Timing Specification and Diagram TABLE 4-7: SPI TIMING SPECIFICATION Parameter SPI Configure Clock Frequency SPI Data Clock Frequency Data Hold and Setup Time SDI Setup Time for SPI Configure SDI Setup Time for SPI Data CSCON Low to SCK Rising Edge; SCK Falling Edge to CSCON High CSDATA Low to SCK Rising Edge ...

Page 29

... APPENDIX A: REVISION HISTORY Revision A (November 2010) This is the Initial release of the document. © 2010 Microchip Technology Inc. MRF89XAM8A Preliminary DS70651A-page 27 ...

Page 30

... MRF89XAM8A NOTES: DS70651A-page 28 Preliminary © 2010 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://support.microchip.com Preliminary MRF89XAM8A contact their distributor, DS70651A-page 29 ...

Page 32

... City / State / ZIP / Country Telephone: (_______) _________ - _________ Application (optional): Would you like a reply? Y MRF89XAM8A Device: 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 Tape and Module Type Device MRF89XAM8A-I/RM: Ultra Low-Power, Integrated ISM Band Sub-GHz Transceiver module Temperature I = -40ºC to +85ºC (Industrial) Range © 2010 Microchip Technology Inc. Example ...

Page 34

... 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 Preliminary © 2010 Microchip Technology Inc. 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 ...

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