Summary of Contents for Ezurio RM126 Series
- Page 1 User Guide RM126x LoRaWAN Development Board Part Numbers: RM1261/RM1262 (453-00140-K1, 453-00139-K1 ) Version 2.0...
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Page 2: Revision History
17 Oct 2023 Appendix: How To Insert MHF4 RF Cable Into Raj Khatri Senthooran Ragavan RM126x MHF4 RF connector 22 Apr 2025 Laird Connectivity to Ezurio template Sue White Senthooran Ragavan Added Ezurio equivalent drawings Raj Khatri https://www.ezurio.com/ © Copyright 2025 Ezurio... -
Page 3: Table Of Contents
RM126x Series Development Kit User Guide Contents Overview ................................................. 4 Ezurio 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 ........................................ -
Page 4: Overview
Packet Trace Interface (PTI) • USB-powered. • AT Command Set (Ezurio 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: Main Board - Features
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. Ezurio 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: Understanding The Development Board
5 Understanding the Development Board Figure 1: RM126x development board layout 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.ezurio.com/ © Copyright 2025 Ezurio All Rights Reserved... -
Page 7: Specifications
RF TX power 22dBm. I DBG On-board Debugger On-board debugger current consumption when USB cable is not Sleep Current inserted (EFM32GG12 EM4S mode current consumption). Consumption 2 From RM126x data sheet From EFR32BG22 data sheet https://www.ezurio.com/ © Copyright 2025 Ezurio All Rights Reserved... -
Page 8: Functional Blocks
The 5-volt power net on the USB bus is regulated down to 3.3 V using an LDO (low-dropout regulator). An automatic isolation circuit isolates the LDO when the USB cable is not plugged in. https://www.ezurio.com/ © Copyright 2025 Ezurio All Rights Reserved... -
Page 9: Rm126X Reset
The Packet Trace Interface (PTI) is also supported which offers invaluable debug information about transmitted and received packets in wireless links. The figure below shows the connections between the target RM126x device and the on-board debugger. See Debugging for more details. https://www.ezurio.com/ © Copyright 2025 Ezurio All Rights Reserved... -
Page 10: Hardware Connectors
Qwiic connector for connecting Qwiic Connect System hardware. The connectors are placed on the top side of the board, and their placement and pinout are shown in the figure below. For additional information on the connectors, see the following sub chapters. Figure 6: RM126x DVK hardware connectors https://www.ezurio.com/ © Copyright 2025 Ezurio All Rights Reserved... -
Page 11: Breakout Pads Pinout
MikroBUS SPI_MISO default via closed SB7 Optional (cut SB7 first): 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.ezurio.com/ © Copyright 2025 Ezurio All Rights Reserved... - Page 12 RM126x Series Development Kit User Guide VMCU1 Labels: Labels: BREAKOUT_LEFT1 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) https://www.ezurio.com/ © Copyright 2025 Ezurio All Rights Reserved...
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Page 13: Mikrobus Socket
USARTx.RX Slave Output MOSI SPI Master Output PD03 (via closed SB11, default) SB11) BREAKOUT_RIGHT5 USARTx.TX Slave Input VCC 3.3V power VMCU1 RM126x voltage domain Reference Ground Ground PWM output PC04 BREAKOUT_LEFT10 TIMER0.CCx https://www.ezurio.com/ © Copyright 2025 Ezurio All Rights Reserved... -
Page 14: Qwiic Connector
C connections on the RM126x Development Kit are shared with the mikroBUS I C signals. The Qwiic connector and its connections to Qwiic cables and the RM126x are illustrated in the figure below. https://www.ezurio.com/ © Copyright 2025 Ezurio All Rights Reserved... -
Page 15: Debug Usb Micro-B Connector
The on-board LDO is also activated which then powers the board. When the USB cable is removed, the on-board debugger goes into a very low power shutoff mode (EM4S), https://www.ezurio.com/ © Copyright 2025 Ezurio All Rights Reserved... -
Page 16: Virtual Com Port
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. 9 Schematic, Assembly Drawing, 3D Model Schematic, assembly drawing, 3D model are available on the Rm126x Series product page in Documentation->Technical drawings: https://www.ezurio.com/rm126x-series https://www.ezurio.com/ © Copyright 2025 Ezurio All Rights Reserved... -
Page 17: Appendix: How To Insert Mhf4 Rf Cable Into Rm126X Mhf4 Rf Connector
Documentation for this part can be found at https://www.i-pex.com/product/mhf-4. It’s assumed that customers use such an adaptor as part of a manufacturing jig. General I-PEX RF adaptor and tools can be found at https://www.i-pex.com/products/rf https://www.ezurio.com/ © Copyright 2025 Ezurio All Rights Reserved... -
Page 18: Additional Information
Ezurio materials or products for any specific or general uses. Ezurio or any of its affiliates or agents shall not be liable for incidental or consequential damages of any kind. All Ezurio products are sold pursuant...
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