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Laird RM126 Series User Manual

Laird RM126 Series User Manual

Lorawan development board
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Version 1.0

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Summary of Contents for Laird RM126 Series

  • Page 1   Version 1.0...
  • Page 2 Version Date Notes Contributors Approver Senthooran 23 May 2023 Initial Release Raj Khatri Ragavan https://www.lairdconnect.com/ Americas: +1-800-492-2320 © Copyright 2022 Laird Connectivity Europe: +44-1628-858-940 All Rights Reserved Hong Kong: +852-2762-4823...
  • Page 3 Overview ..................................... 4 Laird Connectivity RM126x Part Numbers ........................... 4 Kit Contents ..................................4 Main Board – Features ................................ 5 Key Features ................................5 Understanding the Development Board ..........................6 Specifications ..................................7 Recommended Operating Conditions ........................7 Current Consumption..............................7 Functional Blocks ................................
  • Page 4 Packet Trace Interface (PTI) ▪ USB-powered. ▪ AT Command Set (Laird Connectivity created) - Fully featured and extensible, proven over 5+ years Software ▪ Native C development Code (Customer created)- Full software development with Silicon Labs SDK and toolchain. Use Simplicity Studio IDE for full functionality of Silicon Labs HW/SW...
  • Page 5 (customer using AT commands run from a host). Alternatively, the RM126x is supported in Silicon Labs’ Simplicity Studio™ and an initial Board Support Package (BSP) is provided by Silicon labs to give application developers a flying start. Laird Connectivity provides extensive sample applications RM126x for those customers developing with C code developing with the Silicon Labs SDK, including the mandatory RM126x radio regulatory protection layer.
  • Page 6 Note: Example given is for the RM1262 development board. The development boards are identical with the exception of the included module (RM1261 or RM1262). https://www.lairdconnect.com/ Americas: +1-800-492-2320 © Copyright 2022 Laird Connectivity Europe: +44-1628-858-940 All Rights Reserved Hong Kong: +852-2762-4823...
  • Page 7 On-board debugger current consumption when USB cable is not inserted (EFM32GG12 EM4S mode current Sleep Current consumption). Consumption From RM126x data sheet From EFR32BG22 data sheet https://www.lairdconnect.com/ Americas: +1-800-492-2320 © Copyright 2022 Laird Connectivity Europe: +44-1628-858-940 All Rights Reserved Hong Kong: +852-2762-4823...
  • Page 8 Figure 2: RM126x DVK block diagram The kit is powered by the debug USB cable as illustrated in the figure below. Figure 3: RM126x DVK power diagram https://www.lairdconnect.com/ Americas: +1-800-492-2320 © Copyright 2022 Laird Connectivity Europe: +44-1628-858-940 All Rights Reserved Hong Kong: +852-2762-4823...
  • Page 9 The figure below shows the connections between the target RM126x device and the on-board debugger. See Debugging more details. https://www.lairdconnect.com/ Americas: +1-800-492-2320 © Copyright 2022 Laird Connectivity Europe: +44-1628-858-940 All Rights Reserved Hong Kong: +852-2762-4823...
  • Page 10 Figure 5: RM126x DVK Debugger Connections https://www.lairdconnect.com/ Americas: +1-800-492-2320 © Copyright 2022 Laird Connectivity Europe: +44-1628-858-940 All Rights Reserved Hong Kong: +852-2762-4823...
  • Page 11 For additional information on the connectors, see the following sub chapters. Figure 6: RM126x DVK hardware connectors https://www.lairdconnect.com/ Americas: +1-800-492-2320 © Copyright 2022 Laird Connectivity Europe: +44-1628-858-940 All Rights Reserved Hong Kong: +852-2762-4823...
  • Page 12 MikroBUS I2C_SCL (via shorting SB5), Qwiic I2C_SCL (via shorting SB6), MikroBUS UART_RX (via shorting SB8) PC00 MikroBUS SPI_SCK PC01 MikroBUS SPI_CS PC03 MikroBUS RST PC02 MikroBUS Analog https://www.lairdconnect.com/ Americas: +1-800-492-2320 © Copyright 2022 Laird Connectivity Europe: +44-1628-858-940 All Rights Reserved Hong Kong: +852-2762-4823...
  • Page 13 BREAKOUT_RIGHT1 BREAKOUT_LEFT2 VMCU BREAKOUT_LEFT5 BREAKOUT_RIGHT5 BREAKOUT_LEFT6 BREAKOUT_RIGHT6 BREAKOUT_LEFT7 BREAKOUT_RIGHT7 BREAKOUT_LEFT8 BREAKOUT_RIGHT8 BREAKOUT_LEFT9 BREAKOUT_RIGHT9 BREAKOUT_LEFT10 BREAKOUT_RIGHT10 Figure 7: RM126x DVK Breakout Pad (J1 and J2)2 https://www.lairdconnect.com/ Americas: +1-800-492-2320 © Copyright 2022 Laird Connectivity Europe: +44-1628-858-940 All Rights Reserved Hong Kong: +852-2762-4823...
  • Page 14 USARTx.CLK MISO SPI Master Input PD02 (via closed SB7, default) BREAKOUT_RIGHT6 USARTx.RX Slave Output MOSI SPI Master PD03 (via closed SB11, default) BREAKOUT_RIGHT5 USARTx.TX https://www.lairdconnect.com/ Americas: +1-800-492-2320 © Copyright 2022 Laird Connectivity Europe: +44-1628-858-940 All Rights Reserved Hong Kong: +852-2762-4823...
  • Page 15 BREAKOUT_RIGHT6 Solderbridge Open RM126X_SIO6_PD03 MIKROE_I2C_SDA SB10 Solderbridge Open QWIIC_I2C_SDA SB11 Solderbridge Closed MIKROE_SPI_MOSI SB12 Solderbridge Open MIKROE_UART_TX BREAKOUT_RIGHT5 Figure 9: PD02 and PD03 Schematic https://www.lairdconnect.com/ Americas: +1-800-492-2320 © Copyright 2022 Laird Connectivity Europe: +44-1628-858-940 All Rights Reserved Hong Kong: +852-2762-4823...
  • Page 16 QWIC_I2C_SCL (via shorting solder bridge (SB6) The debug USB port can be used for uploading code, debugging, and as a Virtual COM port. More information is available Debugging section. https://www.lairdconnect.com/ Americas: +1-800-492-2320 © Copyright 2022 Laird Connectivity Europe: +44-1628-858-940 All Rights Reserved Hong Kong: +852-2762-4823...
  • Page 17 Note: Changing the baud rate for the COM port on the PC side does not influence the UART baud rate between the debugger and the target device. Schematic, assembly drawing, 3D model are available on the Rm126x Series product page in Documentation->Technical drawings: https://www.lairdconnect.com/rm126x-series https://www.lairdconnect.com/ Americas: +1-800-492-2320 © Copyright 2022 Laird Connectivity Europe: +44-1628-858-940 All Rights Reserved Hong Kong: +852-2762-4823...

This manual is also suitable for:

Rm1261Rm1262453-00140-k1453-00139-k1