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User Guide

Lyra 24S Development Board

Version 1.0

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Summary of Contents for Lyra 24S

Page 1: ...A User Guide Lyra 24S Development Board Version 1 0...

Page 2: ...com 2 Copyright 2023 Laird Connectivity All Rights Reserved Americas 1 800 492 2320 Europe 44 1628 858 940 Hong Kong 852 2762 4823 REVISION HISTORY Version Date Notes Contributors Approver 1 0 1 Aug...

Page 3: ...opment Board 6 6 Specifications 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 9 7 3 Lyra 24S Reset 9 7 4 Push B...

Page 4: ...radio 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...

Page 5: ...port Package BSP is provided to give application developers a flying start Connecting external hardware to the Lyra 24S Development Kit can be done using the 20 breakout pads which present peripherals...

Page 6: ...https www lairdconnect com 6 Copyright 2023 Laird Connectivity All Rights Reserved Americas 1 800 492 2320 Europe 44 1628 858 940 Hong Kong 852 2762 4823 5 UNDERSTANDING THE DEVELOPMENT BOARD Figure...

Page 7: ...xternal hardware connected See Table 2 for typical current consumptions for the Lyra 24S and the on board debugger Note that the numbers are taken from the data sheets for the devices For a full overv...

Page 8: ...940 Hong Kong 852 2762 4823 7 FUNCTIONAL BLOCKS The core of the Lyra 24S Development Kit is the Lyra 24S Bluetooth Module Refer to Understanding the Development Board for placement and layout of the...

Page 9: ...ther power sources are present on the kit Failure to follow this guideline can cause power conflicts and damage the LDO 7 3 Lyra 24S Reset The Lyra 24S can be reset by a few different sources A user p...

Page 10: ...ion of User Guide Firmware Options and Upgrading Lyra Series for more information at www lairdconnect com lyra24 series 7 5 On board Debugger The Lyra 24S Development Kit contains a microcontroller se...

Page 11: ...Development Kit features a USB 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 con...

Page 12: ...may be shared between the breakout pads and other functions on the Lyra 24S Development Kit The table below includes an overview of the breakout pads and functionality that is shared with the kit Tab...

Page 13: ...board Breakout Pads J1 and J2 BREAKOUT_LEFT6 BREAKOUT_LEFT7 BREAKOUT_LEFT8 BREAKOUT_LEFT5 BREAKOUT_RIGHT1 BREAKOUT_RIGHT5 BREAKOUT_RIGHT6 BREAKOUT_RIGHT9 BREAKOUT_RIGHT7 BREAKOUT_RIGHT8 BREAKOUT_LEFT9...

Page 14: ...n the Lyra 24S 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 bo...

Page 15: ...en solder bridge SB10 BREAKOUT_LEFT5 I2Cx SDA 3V3 VCC 3 3V power VMCU1 Lyra 24S voltage domain 3V3 5V VCC 5V power 5V Board USB voltage 5V GND Reference Ground GND Ground GND The below Figure 9 shows...

Page 16: ...c I2C connections on the Lyra 24S Development Kit are shared with the mikroBUS I2C signals The Qwiic connector and its connections to Qwiic cables and the Lyra 24S are illustrated in the figure below...

Page 17: ...rd 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...

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