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Страница 2: ...2 Copyright 2022 Laird Connectivity All Rights Reserved Americas 1 800 492 2320 Europe 44 1628 858 940 Hong Kong 852 2762 4823 Version Date Notes Contributors Approver 1 0 23 May 2023 Initial Release Raj Khatri Senthooran Ragavan ...
Страница 3: ...cifications 7 6 1 Recommended Operating Conditions 7 6 2 Current Consumption 7 7 Functional Blocks 8 7 1 Hardware Block Diagram 8 7 2 Power Supply 8 7 3 RM126x Reset 9 7 4 Push Button and LED 9 7 4 1 BOOT pin PC06 and BUTTON 0 silkscreen BTN0 9 7 5 On board Debugger 9 7 6 Hardware Connectors 11 7 6 1 Breakout Pads Pinout 12 7 6 2 MikroBUS Socket 14 7 6 3 Qwiic Connector 16 7 6 4 Debug USB Micro B ...
Страница 4: ...32 bit ARM Cortex M33 with 76 8 MHz maximum operating frequency 512 kB flash and 32 kB RAM Features User LED and push button 20 pin 2 54 mm breakout pads mikroBUS socket Qwiic connector SEGGER J Link on board debugger Virtual COM port Packet Trace Interface PTI USB powered Software AT Command Set Laird Connectivity created Fully featured and extensible proven over 5 years Native C development Code...
Страница 5: ...veloping with C code developing with the Silicon Labs SDK including the mandatory RM126x radio regulatory protection layer Connecting external hardware to the RM126x Development Kit can be done using the 20 breakout pads which present peripherals from the RM126x such as I2C SPI UART and GPIOs The mikroBUS socket allows inserting mikroBUS add on boards which interface with the RM126x through SPI UA...
Страница 6: ...s Reserved Americas 1 800 492 2320 Europe 44 1628 858 940 Hong Kong 852 2762 4823 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 ...
Страница 7: ...he devices For a full overview see the RM126x datasheet Table 2 Current consumption Parameter Symbol Condition Typ Unit Radio RX current RM1261 or RM1262 IRX_LORA IRX_FSK RM1261 or RM1261 LoRa radio system current consumption in Receive mode RX Boosted LoRa Running radio test firmware EUART open VDD 3 3V at 25 C 8 1 mA RM1261 or RM1261 FSK radio system current consumption in Receive mode RX Booste...
Страница 8: ... RM126x Development Kit is the RM126x LoRaWAN Module Refer to Understanding the Development Board for placement and layout of the hardware components An overview of the RM126x Development Kit is illustrated in the figure below 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 ...
Страница 9: ...easier utilisation The BOOT pin PC06 is used to determine when execution of the bootloader is required Upon reset execution of the bootloader begins The state of the BOOT pin is read immediately upon start up of the bootloader If LOW BTN0 pressed execution of the bootloader continues facilitating firmware update via the UART If the BOOT pin is HIGH BTN0 not pressed the bootloader will stop executi...
Страница 10: ...https www lairdconnect com 10 Copyright 2022 Laird Connectivity All Rights Reserved Americas 1 800 492 2320 Europe 44 1628 858 940 Hong Kong 852 2762 4823 Figure 5 RM126x DVK Debugger Connections ...
Страница 11: ...SB Micro B connector 20 breakout pads a mikroBUS connector for connecting mikroBUS add on boards and a 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 ...
Страница 12: ...des an overview of the breakout pads and functionality that is shared with the kit Table 3 RM126x DVK Breakout Pads Pinout Pin Connection Shared Feature Top View Left Side Breakout Pins J1 1 PC06 BUTTON0 2 PA03 DBG_SWO SI_SWO 3 GND Ground 4 5V Board USB voltage 5 PB03 SI_UART_RX 6 PB02 SI_UART_RTS 7 PC07 SI_UART_TX 8 PB04 SI_UART_CTS 9 PC05 LED0 via SB4 MikroBUS INT 10 PC04 MikroBUS PWM Top View R...
Страница 13: ...J1 and J2 2 5V VMCU1 BREAKOUT_LEFT1 BREAKOUT_RIGHT1 C0 RST NC D3 C1 C5 C3 C6 A3 B3 B2 C7 B4 D2 Labels Labels C4 C2 GND 5V GND VMCU 1 2 3 4 5 6 7 8 9 10 J1 GND 1 2 3 4 5 6 7 8 9 10 J2 GND BREAKOUT_LEFT2 BREAKOUT_LEFT5 BREAKOUT_LEFT6 BREAKOUT_LEFT7 BREAKOUT_LEFT8 BREAKOUT_LEFT9 BREAKOUT_LEFT10 BREAKOUT_RIGHT5 BREAKOUT_RIGHT6 BREAKOUT_RIGHT7 BREAKOUT_RIGHT8 BREAKOUT_RIGHT9 BREAKOUT_RIGHT10 ...
Страница 14: ...orientation notch on the RM126x Development Kit shown in the figure below to ensure correct orientation Add on boards have a similar notch that needs to be lined up with the one shown below Figure 8 mikroBUS add on board orientation The table below gives an overview of the mikroBUS socket pin connections to the RM126x Table 4 Pin connections from mikroBUS socket to RM126x Pin Name Pin Function Con...
Страница 15: ... I2Cx SCL SDA I2C Data PD03 via shorting SB9 cut default SB11 QWIIC_I2C_SDA via shorting SB10 cut default SB11 BREAKOUT_LEFT5 I2Cx SDA 5V VCC 5V power 5V Board USB voltage 5V GND Reference Ground GND Ground GND The below figure XYZ shows RM126x GPIO s PD02 and PD03 are shared with multiple signals with default the MIKROE_SPI_MISO wired to RM126x PD02 via closed solder bridge SB7 and MIKROE_SPI_MOS...
Страница 16: ...it are shared with the mikroBUS I2C signals The Qwiic connector and its connections to Qwiic cables and the RM126x are illustrated in the figure below Figure 10 Qwiic connector The table below gives an overview of the Qwiic connections to the RM126x Table 5 Qwiic connections to RM126x Qwiic Pin Connection Shared Feature Suggested Peripheral Mapping Ground GND Ground 3 3V VMCU1 RM126x voltage domai...
Страница 17: ... 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 consuming around 80 nA typically EFM32GG12 data sheet number This means that an application running off batteries will not be affected too much by the on board debugger power consumption Since the I O voltage rail of the debuggerremains po...
