Laird Lyra S User Manual Download Page 8

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Parameter

Symbol

Condition

Typ

Unit

On-board Debugger
Sleep Current
Consumption

DBG

On-board debugger current consumption when USB cable is not
inserted (EFM32GG12 EM4S mode current consumption)

From Lyra S data sheet

From EFM32GG12 data sheet

Summary of Contents for Lyra S

Page 1: ...A Version 1 3...

Page 2: ...ave Drogowski Jonathan Kaye 1 1 10 June 2022 Corrected Figure 4 in 8 4 Push Button and LED Florian Baumgartl Raj Khatri Dave Drogowski Jonathan Kaye 1 2 19 Aug 2022 Added note about silkscreen labelli...

Page 3: ...cations 7 7 1 Recommended Operating Conditions 7 7 2 Current Consumption 7 8 Functional Blocks 9 8 1 Hardware Block Diagram 9 8 2 Power Supply 10 8 3 Lyra S Reset 10 8 4 Push Button and LED 10 8 4 1 B...

Page 4: ...ector SEGGER J Link on board debugger Virtual COM port Packet Trace Interface PTI USB powered MHF4 RF connector to route RF form Lyra S module to an External Antenna see 11 Routing RF to External Ante...

Page 5: ...reless links Connecting external hardware to the Lyra S Development Kit can be done using the 20 breakout pads which present peripherals from the Lyra S such as I2C SPI UART and GPIOs The mikroBUS soc...

Page 6: ...pment board silkscreen prior to v2 3 may list SW1 as BGx or AT SWO On these boards BGx should be understood to be AT BGx and AT SWO should be understood to be C DEV See 6 Software Development Selectio...

Page 7: ...Voltage VMCU supplied externally VVMCU 3 31 V Operating Temperature TOP 20 C 1 The typical supply voltage to the Lyra S is 3 0 V but the maximum voltage is a function of temperature and average lifet...

Page 8: ...320 Europe 44 1628 858 940 Hong Kong 852 2762 4823 Parameter Symbol Condition Typ Unit On board Debugger Sleep Current Consumption2 IDBG On board debugger current consumption when USB cableis not inse...

Page 9: ...1628 858 940 Hong Kong 852 2762 4823 The core of the Lyra S Development Kit is the Lyra S Bluetooth Module Refer to Understanding the Development Board for placement and layout of the hardware compon...

Page 10: ...r power sources are present on the kit Failure to follow this guideline can cause power conflicts and damage the LDO The Lyra S can be reset by a few different sources A user pressing the RESET button...

Page 11: ...ion of User Guide Firmware Options and Upgrading Lyra Series for more information The Lyra S Development Kit contains a microcontroller separate from the Lyra S that provides the user with an on board...

Page 12: ...B 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...

Page 13: ...ver pins may be shared between the breakout pads and other functions on the Lyra S Development Kit The table below includes an overview of the breakout pads and functionality that is shared with the k...

Page 14: ...er to the orientation notch on the Lyra S 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...

Page 15: ...rdware is daisy chainable as long as each I2C device in the chain has a unique I2C address Note The Qwiic I2C connections on the Lyra S Development Kit are shared with the mikroBUS I2C signals The Qwi...

Page 16: ...e 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 EFM32...

Page 17: ...ction Lyra S Internal antenna connection 1 IPEX MHF4 RF connector 20449 001E Fitted 2 Fit 0R resistor position R937 in below SCH between Lyra S module pin3 RF_2G4 and IPEX MHF4 RF connector 20449 001E...