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Related Manuals for Laird Lyra 24S
Summary of Contents for Laird Lyra 24S
- Page 1 User Guide Lyra 24S Development Board Version 1.0...
- Page 2 Lyra 24S Development Kit User Guide EVISION ISTORY Version Date Notes Contributors Approver 1 Aug 2023 First Release Raj Khatri Jonathan Kaye Dave Drogowski https://www.lairdconnect.com/ Americas: +1-800-492-2320 © Copyright 2023 Laird Connectivity Europe: +44-1628-858-940 All Rights Reserved Hong Kong: +852-2762-4823...
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Page 3: Table Of Contents
Lyra 24S Development Kit User Guide ONTENTS Overview..................................4 Laird Connectivity Lyra 24S Part Numbers ........................4 Kit Contents ................................. 4 Main Board – Features ..............................5 Key Features ............................... 5 Understanding the Development Board ......................... 6 Specifications ................................7 Recommended Operating Conditions ........................ -
Page 4: Overview
User Guide VERVIEW The Lyra 24S Development Kit is an ultra-low cost, small form factor development and evaluation platform for the Lyra 24S Wireless Bluetooth® Module. The Lyra 24S Development Kit is focused on rapid prototyping and concept creation of IoT applications. It is designed around the Lyra 24S Module, based on the EFR32BG22 System-on-Chip, which is an ideal device family for developing energy- friendly connected IoT applications. -
Page 5: Main Board - Features
Lyra 24S such as I2C, SPI, UART and GPIOs. The mikroBUS socket allows inserting mikroBUS add-on boards which interface with the Lyra 24S through SPI, UART or I2C. The Qwiic connector can be used to connect hardware from the Qwiic Connect System through I2C. -
Page 6: Understanding The Development Board
Lyra 24S Development Kit User Guide NDERSTANDING THE EVELOPMENT OARD Figure 1: Lyra 24S development board layout https://www.lairdconnect.com/ Americas: +1-800-492-2320 © Copyright 2023 Laird Connectivity Europe: +44-1628-858-940 All Rights Reserved Hong Kong: +852-2762-4823... -
Page 7: Specifications
Operating Temperature The typical supply voltage to the Lyra 24S is 3.0 V, but the maximum voltage is a function of temperature and average lifetime current load. Over a 10-year lifespan, the average lifetime current load should not exceed 60 mA when the supply voltage is 3.3 V. -
Page 8: Functional Blocks
Lyra 24S Development Kit User Guide UNCTIONAL LOCKS 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 hardware components. Hardware Block Diagram An overview of the Lyra 24S Development Kit is illustrated in the figure below. -
Page 9: Power Supply
Power can be injected externally on the VMCU net if the USB cable is removed, and no other power sources are present on the kit. Failure to follow this guideline can cause power conflicts and damage the LDO. Lyra 24S Reset The Lyra 24S can be reset by a few different sources: ▪ A user pressing the RESET button. -
Page 10: Boot Pin (Pc07) And Button 0 (Silkscreen Btn0)
User Guide 7.4.1 BOOT pin (PC07) and BUTTON 0 (silkscreen BTN0) For the Lyra 24S module the BOOT pin is on PC07 (pin29). On the Lyra dev board BTN0 (Button0) is by default mapped to the BOOT pin for easier utilisation. -
Page 11: Hardware Connectors
User Guide Hardware Connectors The Lyra 24S 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 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. -
Page 12: Breakout Pads Pinout
Twenty breakout pads are provided and allow connection of external peripherals. There are 10 pads on the left side of the board, and 10 pads on the right. The breakout pads contain a number of I/O pins that can be used with most of the Lyra 24S features. - Page 13 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: Lyra 24S devevelopment board Breakout Pads (J1 and J2) https://www.lairdconnect.com/ Americas: +1-800-492-2320 © Copyright 2023 Laird Connectivity Europe: +44-1628-858-940 All Rights Reserved Hong Kong: +852-2762-4823...
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Page 14: Mikrobus Socket
+3.3V WCON, 2185-108MG0CYNR2 WCON, 2185-108MG0CYNR2 Figure 8: mikroBUS add-on board orientation The table below gives an overview of the mikroBUS socket pin connections to the Lyra 24S. Table 4: Pin connections from mikroBUS socket to Lyra 24S Suggested Pin Function... - Page 15 Lyra 24S GPIO’s PD02 and PD03 are shared with multiple signals, with default the The below Figure 9 MIKROE_I2C_SCL wired to Lyra 24S PD02 (via closed solder bridge SB5) and MIKROE_I2C_SDA wired to Lyra 24S PD03 (via closed solder bridge SB9). VMCU1...
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Page 16: Qwiic Connector
The Lyra 24S Development Kit features a Qwiic® connector compatible with Qwiic Connect System hardware. The Qwiic connector provides an easy way to expand the functionality of the Lyra 24S Development Kit with sensors, LCDs, and other peripherals over the I C interface. -
Page 17: Debugging
Virtual COM Port The virtual COM port is a connection to a UART of the target Lyra 24S and allows serial data to be sent and received from the device. The on-board debugger presents this as a virtual COM port on the host computer that shows up when the USB cable is inserted.
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