Microchip Technology RN2903 Manual

Microchip Technology RN2903 Manual

Low-power long range lora technology transceiver module
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Features
• On-Board LoRaWAN™ Protocol Stack
• ASCII Command Interface over UART
• Compact Form Factor: 17.8 x 26.7 x 3.34 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)
- Taiwan
• Device Firmware Upgrade (DFU) over UART, see
RN2903 LoRa
Reference User's Guide (DS40001811)
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, Shared with 13
Analog Inputs
RF/Analog Features
• Low-Power Long Range Transceiver Operating in
the 915 MHz Frequency Band
• High Receiver Sensitivity: Down to -146 dBm
• TX Power: Adjustable up to +18.5 dBm High
Efficiency PA
• FSK, GFSK and LoRa Technology Modulation
• IIP3 = -11 dBm
• Up to 15 km Coverage at Suburban and up to
5 km Coverage at Urban Area
 2015-2021 Microchip Technology Inc.
Arrow.com.
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Low-Power Long Range LoRa
Transceiver Module
®
Technology Module Command
RN2903
Technology
®
General 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 and Class C protocol specifications. It
integrates RF, a baseband controller and command
Application 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 (M2M)
• Internet of Things (IoT)
DS50002390K-page 1

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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, Shared with 13...
  • 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 website at www.microchip.com to receive the most current information on all of our products.  2015-2021 Microchip Technology Inc. DS50002390K-page 2 Arrow.com. Downloaded from...
  • Page 3: Device Overview

    Using the LoRa Technology modulation technique, The RN2903 module delivers exceptional phase noise, RN2903 can achieve a receiver sensitivity of -146 dBm. selectivity, receiver linearity and IIP3 for significantly The high sensitivity combined with the integrated lower power consumption. The level of conductive +18.5 dBm output power amplifier yields industry-...
  • Page 4 RN2903 Table 1-1 describes the RN2903 pins. TABLE 1-1: PIN DESCRIPTION Name Type Description Power Ground supply terminal UART_RTS Output Communication UART RTS signal or GPIO UART_CTS Input Communication UART CTS signal or GPIO RESERVED — Do not connect RESERVED —...
  • Page 5 General purpose I/O pin or analog input GPIO9 Input/Output General purpose I/O pin or analog input Power Ground supply terminal Note 1: Optional handshake lines are supported in future firmware releases.  2015-2021 Microchip Technology Inc. DS50002390K-page 5 Arrow.com. Downloaded from...
  • Page 6: General Specifications

    Note 1: Dependent on modulation settings, Receiver Bandwidth (RBW) and Spreading Factor (SF). 2: Subject to environmental conditions. ® 3: TX power is adjustable. For more information, refer to the RN2903 LoRa Technology Module Command Reference User’s Guide (DS40001811). TABLE 2-2:...
  • Page 7 OUTPUT POWER OF SUPPLY VOLTAGE AND TEMPERATURE Typical Output Power (dBm) Temperature (°C) VDD = 2.1V VDD = 3.3V VDD = 3.6V 18.0 18.6 18.7 17.1 18.0 18.1 16.3 17.3 17.3  2015-2021 Microchip Technology Inc. DS50002390K-page 7 Arrow.com. Downloaded from...
  • Page 8: Typical Hardware Connections

    Sensor Interface to Host MCU GPIO Pins (GPIO0–GPIO13) The RN2903 module has a dedicated UART interface The module has 14 GPIO pins. These lines can be to communicate with a host controller. Optional connected to switches, LEDs and relay outputs. The...
  • Page 9 The normal firmware upgrade method is through the internal bootloader of the module via the UART. The ® method is documented in the RN2903 LoRa Technology Module Command Reference User’s Guide (DS40001811). However, for backup firmware update purposes the...
  • Page 10: 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  2015-2021 Microchip Technology Inc. DS50002390K-page 10 Arrow.com. Downloaded from...
  • Page 11: Application Information

    (FCC) and certificate (IC). RF Trace Layout Design Gerber files are available on the RN2903 product web page at www.microchip.com/rn2903. The RN2903 modular transmitter is certified with a PCB...
  • Page 12 84 mm long and 53 mm wide in order to generate that impedance and the average gain of 1.3 dB. Gerber files for the PCB trace antenna are available on the RN2903 product web page at http:/ /www.microchip.com/rn2903.
  • Page 13 Gain (dBi) Sleeve Dipole PCB Trace Reflow Profile Information The RN2903 module can be soldered to the host board using standard leaded or lead free solder reflow pro- files. To avoid damaging the module, adhere to the fol- lowing recommendations: •...
  • Page 14: 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 15 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 16 Apparatus (All Frequency Bands). Currently this INFORMATION REQUIREMENTS device is approved for use for when 20 cm can be The RN2903 module is labeled with its own NCC mark maintained between the antenna and users. and certificate number as below:...
  • Page 17 National Communications Commission (NCC): http://www.ncc.gov.tw Brazil Operating Frequency Band 902.0-907.5 MHz and 915.0-928.0 MHz. The RN2903 module has received compliance approval in accordance with the Telecommunications Act of the Federal Republic of Brazil National Telecommunications Agency (ANATEL). 6.4.1 LABELING AND USER...
  • Page 18 RN2903 NOTES:  2015-2021 Microchip Technology Inc. DS50002390K-page 18 Arrow.com. Downloaded from...
  • Page 19: Appendix A: Revision History

    This revision includes the following updates: • Updated Section 6.0 “Regulatory Approval” correct information for Taiwan. Revision F (May 2018) This revision includes the following updates: • Updated Figure 4-2.  2015-2021 Microchip Technology Inc. DS50002390K-page 19 Arrow.com. Downloaded from...
  • Page 20 RN2903 NOTES:  2015-2021 Microchip Technology Inc. DS50002390K-page 20 Arrow.com. Downloaded from...
  • Page 21: The Microchip Website

    To register, access the Microchip website at www.microchip.com. Under “Support”, click on “Customer Change Notification” and follow the registration instructions.  2015-2021 Microchip Technology Inc. DS50002390K-page 21 Arrow.com. Downloaded from...
  • Page 22 RN2903 NOTES:  2015-2021 Microchip Technology Inc. DS50002390K-page 22 Arrow.com. Downloaded from...
  • Page 23: Product Identification System

    Range Revision Parameter RN2903A-I/RMSA: Industrial temperature, AU915-928 Number (Optional) ® Device: RN2903A: Low-Power Long Range LoRa Technology Transceiver module Temperature Range: = -40C to +85C (Industrial) Package: = Radio Module  2015-2021 Microchip Technology Inc. DS50002390K-page 23 Arrow.com. Downloaded from...
  • Page 24 RN2903 NOTES:  2015-2021 Microchip Technology Inc. DS50002390K-page 24 Arrow.com. Downloaded from...
  • Page 25 Technology, and Symmcom are registered trademarks of Microchip Technology Inc. in other countries. GestIC is a registered trademark of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other countries. All other trademarks mentioned herein are property of their respective companies.
  • Page 26 Tel: 46-31-704-60-40 Tel: 631-435-6000 Sweden - Stockholm San Jose, CA Tel: 46-8-5090-4654 Tel: 408-735-9110 UK - Wokingham Tel: 408-436-4270 Tel: 44-118-921-5800 Canada - Toronto Fax: 44-118-921-5820 Tel: 905-695-1980 Fax: 905-695-2078  2015-2021 Microchip Technology Inc. DS50002390K-page 26 02/28/20 Arrow.com. Downloaded from...

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