Microchip Technology RN2903 Manual

Microchip Technology RN2903 Manual

Low-power long range lora technology transceiver module
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Low-Power Long Range LoRa™ Technology
General Features
• On-board LoRaWAN™ Class A protocol stack
• ASCII command interface over UART
• Compact form factor: 17.8 x 26.7 x 3 mm
• Castellated SMT pads for easy and reliable PCB
mounting
• Environmentally friendly, RoHS compliant
• Compliance:
- Modular Certified for the United States (FCC)
and Canada (IC)
- Australia and New Zealand
• Device Firmware Upgrade (DFU) over UART (see
"RN2903 LoRa™ Technology Module Command
Reference User's Guide" DS40000000A)
Operational
• Single operating voltage: 2.1V to 3.6V (3.3V
typical)
• Temperature range: -40°C to +85°C
• Low-power consumption
• Programmable RF Communication Bit Rate up to
300 kbps with FSK modulation, 12500 bps with
LoRa™ Technology modulation
• Integrated MCU, Crystal, EUI-64 Node Identity
Serial EEPROM, Radio Transceiver with Analog
Front End, Matching Circuitry
• 14 GPIOs for control and status
RF/Analog Features
• Low-Power Long Range Transceiver operating in
the 915 MHz frequency band
• High Receiver Sensitivity: down to -148 dBm
• TX Power: adjustable up to +20 dBm high
efficiency PA
• FSK, GFSK, and LoRa Technology modulation
• IIP3 = -11 dBm
• >15 km coverage at suburban and >5 km
coverage at urban area
 2015 Microchip Technology Inc.
Transceiver Module
Description
Microchip's RN2903 Low-Power Long Range LoRa
Technology Transceiver module provides an easy to
use, low-power solution for long range wireless data
transmission. The advanced command interface offers
rapid time to market.
The RN2903 module complies with the LoRaWAN
Class A protocol specifications. It integrates RF, a
baseband
Programming Interface (API) processor, making it a
complete long range solution.
The RN2903 module is suitable for simple long range
sensor applications with external host MCU.
Applications
• Automated Meter Reading
• Home and Building Automation
• Wireless Alarm and Security Systems
• Industrial Monitoring and Control
• Machine to Machine
• Internet of Things (IoT)
Advance Information
RN2903
controller,
command
DS00000A-page 1
Application

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Summary of Contents for Microchip Technology RN2903

  • Page 1 • Integrated MCU, Crystal, EUI-64 Node Identity Serial EEPROM, Radio Transceiver with Analog The RN2903 module is suitable for simple long range Front End, Matching Circuitry sensor applications with external host MCU. • 14 GPIOs for control and status...
  • Page 2: Table Of Contents

    When contacting a sales office, please specify which device, revision of silicon and data sheet (include literature number) you are using. Customer Notification System Register on our web site at www.microchip.com to receive the most current information on all of our products. Advance Information  2015 Microchip Technology Inc. DS00000A-page 2...
  • Page 3: Device Overview

    Using LoRa Technology modulation technique, The RN2903 module delivers exceptional phase noise, RN2903 can achieve a receiver sensitivity of -148 dBm. selectivity, receiver linearity, and IIP3 for significantly The high sensitivity combined with the integrated lower power consumption. Figure 1-1,...
  • Page 4 GPIO3 Input/Output General purpose I/O pin GPIO4 Input/Output General purpose I/O pin GPIO5 Input/Output General purpose I/O pin Power Ground supply terminal — Not connected GPIO6 Input/Output General purpose I/O pin Advance Information  2015 Microchip Technology Inc. DS00000A-page 4...
  • Page 5 General purpose I/O pin GPIO8 Input/Output General purpose I/O pin GPIO9 Input/Output General purpose I/O pin Power Ground supply terminal Note 1: Optional handshake lines are supported in future firmware releases. Advance Information  2015 Microchip Technology Inc. DS00000A-page 5...
  • Page 6: General Specifications

    -40°C to +115°C Humidity 10% ~ 90% non-condensing Note 1: Depends on modulation. Expand Spreading Factor (SF). 2: TX power is adjustable. For more information, refer to the “RN2903 LoRa™ Technology Module Command Reference User’s Guide” (DS40000000A). TABLE 2-2: ELECTRICAL CHARACTERISTICS Parameter Min.
  • Page 7 49.6 Dimensions 17.8 x 26.7 x 3 mm 52.0 Weight 2.05g 55.0 57.7 10.0 61.0 11.0 64.8 12.0 73.1 13.0 78.0 14.7 83.0 15.5 88.0 16.3 95.8 17.0 103.6 18.5 124.4 Advance Information  2015 Microchip Technology Inc. DS00000A-page 7...
  • Page 8: Typical Hardware Connections

    Note 1: Optional handshake lines are supported in future firmware releases. INTERFACE TO HOST MCU RF CONNECTION The RN2903 module has a dedicated UART interface When routing RF path, use proper strip lines with an to communicate with a host controller. Optional impedance of 50 Ohm.
  • Page 9: Physical Dimensions

    RN2903 PHYSICAL DIMENSIONS Figure 4-1 Figure 4-2 illustrate the physical dimensions and the recommended PCB layout for the RN2903 module. FIGURE 4-1: RN2903 PHYSICAL DIMENSIONS FIGURE 4-2: RECOMMENDED PCB FOOTPRINT Note: Host PCB top layer copper traces must have solder mask to avoid shorting test pins on the bottom of the module.
  • Page 10: Application Information

    Figure 5.3 shows a routing example. FIGURE 5-1: RF ROUTING (EXAMPLE) Approved Antennas Modular certification of the RN2903 module was per- formed with the external antenna type mentioned in Table 5-1. Refer Section 6.0 "Regulatory...
  • Page 11 APPLICATION SCHEMATIC Figure 5-2 shows the schematic for the RN2903 PICtail™/PICtail Plus Daughter Board. FIGURE 5-2: PICTAIL™/PICTAIL PLUS DAUGHTER BOARD SCHEMATIC Current measure points 50 Ohm +3V3 CUR1 TEST +3V3_M +3V3 CUR2 0603 ID D+ D- +5V MCP1825-3302E/DC +3V3 +3V3_M...
  • Page 12: Regulatory Approval

    LABELING AND USER INFORMATION REQUIREMENTS This section outlines the regulatory information for the The RN2903 module has been labeled with its own RN2903 module for the following countries: FCC ID number, and if the FCC ID is not visible when •...
  • Page 13 Federal Communications Commission (FCC). radio apparatus shall contain the following or From the RN2903 FCC Grant: Output power listed is equivalent notice in a conspicuous location in the user conducted. This grant is valid only when the module is...
  • Page 14 The Australian Communications and Media Authority: Issue 3, December 2010): http://www.acma.gov.au/. The RN2903 module can only be sold or operated with antennas with which it was approved. Transmitter may be approved with multiple antenna types. An antenna type comprises antennas having similar in-band and out-of-band radiation patterns.
  • Page 15 While the AS /NZS 4268:2008 refers to the USA FCC 15.247 and EN 300 220-1 V2.3.1 RF standards, the RN2903 module RF transmitter test reports can be frequency limits of 921 MHz to 928 MHz apply in New used in part to demonstrate compliance against the Zealand.
  • Page 16 RN2903 NOTES: Advance Information  2015 Microchip Technology Inc. DS00000A-page 16...
  • Page 17: Appendix A: Revision History

    RN2903 APPENDIX A: REVISION HISTORY Revision A (June 2015) This is the initial release of this document. Advance Information  2015 Microchip Technology Inc. DS00000A-page 17...
  • Page 18 RN2903 NOTES: Advance Information  2015 Microchip Technology Inc. DS00000A-page 18...
  • Page 19: The Microchip Web Site

    To register, access the Microchip web site at www.microchip.com. Under “Support”, click “Customer Change Notification” and follow the registration instructions.  2015 Microchip Technology Inc. DS00000A-page 19...
  • Page 20 RN2903 NOTES:  2015 Microchip Technology Inc. DS00000A-page 20...
  • Page 21: Product Identification System

    Examples: Device Temperature Package Firmware RN2903-I/RM: Industrial temperature Revision Range Number Device: RN2903: Low-Power Long Range LoRa™ Technology Transceiver module Temperature Range: = -40C to +85C (Industrial) Package: = Radio Module Advance Information  2015 Microchip Technology Inc. DS00000A-page 21...
  • Page 22 RN2903 NOTES: Advance Information  2015 Microchip Technology Inc. DS00000A-page 22...
  • Page 23 WiperLock, Wireless DNA, 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. Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries.
  • Page 24 Tel: 886-2-2508-8600 China - Xian Tel: 631-435-6000 Tel: 86-29-8833-7252 Fax: 886-2-2508-0102 San Jose, CA Fax: 86-29-8833-7256 Thailand - Bangkok Tel: 408-735-9110 Tel: 66-2-694-1351 Canada - Toronto Fax: 66-2-694-1350 Tel: 905-673-0699 Fax: 905-673-6509 01/27/15  2015 Microchip Technology Inc. DS00000A-page 24...

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