Silicon Laboratories EFR32FG23, User Manual

Page 1: ...imum operating frequency 512 kB flash and 64 kB RAM Energy efficient radio core with low active and sleep currents Integrated PA with up to 20 dBm sub GHz TX power Robust peripheral set and 31 GPIO KIT FEATURES SMA connector for antenna connection 5 digit 7 segment LCD Relative humidity and temperature sensor LC sensor for metal detection User LED and 2 push buttons 2 54 mm breakout pads for GPIO ...

Page 2: ...B Connector 13 4 Debugging 14 4 1 On board Debugger 15 4 2 External Debugger 15 4 3 Virtual COM Port 15 5 Radio 16 5 1 RF Section 16 5 1 1 Description of the Sub GHz RF Matching 16 5 1 2 RF Section Power Supply 16 5 1 3 RF Matching Bill of Materials 17 5 2 EMC Regulations 17 5 2 1 ETSI EN 300 200 1 Emission Limits for the 868 868 6 MHz Band 17 5 2 2 FCC15 247 Emission Limits for the 902 928 MHz Ba...

Page 3: ...ompliance 23 6 Schematics Assembly Drawings and BOM 24 7 Kit Revision History 25 8 Board Revision History and Errata 26 8 1 Board Revision History 26 8 2 Errata 26 9 Document Revision History 27 silabs com Building a more connected world Rev 1 1 3 ...

Page 4: ...1 Kit Contents The following items are included in the box 1x EFR32FG23 Dev Kit board BRD2600A 1x 868 MHz antenna Chilisin BTEA0019130G8R2A01 1x 915 MHz antenna Chilisin BTEA0019130G9R2A01 1x USB Type A to Micro B cable 1 2 Getting Started Detailed instructions for how to get started with your new EFR32FG23 Dev Kit can be found on the Silicon Labs web pages https www silabs com dev tools 1 3 Hardw...

Page 5: ...t trace Humidity and Temperature Sensor Ambient Light Sensor EFR32FG23 Wireless Gecko SMA Antenna Connector On board USB J Link Debugger CR2032 Coin Cell Holder and Mini Simplicity connector on back side LED LC Sensor Segment LCD Figure 1 1 EFR32FG23 Dev Kit Hardware Layout UG508 EFR32FG23 Dev Kit User s Guide Introduction silabs com Building a more connected world Rev 1 1 5 ...

Page 6: ...y Input Voltage VVBAT 2 0 3 0 3 3 V Supply Input Voltage VMCU supplied externally 1 2 VVMCU 1 8 3 3 3 6 V Operating Temperature TOP 20 C Note 1 The supply voltage limit may be tighter under certain conditions when using the EFR32FG23 s internal dc dc converter For more information see the EFR32FG23 data sheet 2 Not recommended for use with rechargeable Lithium batteries Most Li Ion and Li Po cells...

Page 7: ...w of the EFR32FG23 Dev Kit is illustrated in the figure below Radio Device Connectivity Debugging J Link Debugger USB Micro B Connector 2 4 GHz Antenna EFR32FG23 Wireless SoC Breakout Pads Sensors Si7021 Temperature Humidity Sensor SMA Connector SMA Connector Buttons and LED User Buttons LED Mini Simplicity Connector 4x10 Segment LCD LC Sensor Figure 3 1 Kit Block Diagram UG508 EFR32FG23 Dev Kit U...

Page 8: ... injected directly to the VMCU net It is important to follow this in order to avoid power conflicts and backfeeding the battery Powering the EFR32FG23 Dev Kit through the Mini Simplicity connector allows current measurements using the Advanced Energy Monitoring AEM as described in section 4 2 External Debugger Important When powering the board through the Mini Simplicity connector the USB and batt...

Page 9: ... processing calibration data and an I2C interface The patented use of industry standard low K polymeric dielectrics for sensing humidity enables the construction of low power monolithic CMOS Sensor ICs with low drift and hysteresis and excellent long term stability The Si7021 offers an accurate low power factory calibrated digital solution ideal for meas uring humidity dew point and temperature in...

Page 10: ... programmable by the user When the USB cable is removed the on board debugger goes into a very low power shutoff mode EM4S In addition to providing code download and debug features the on board debugger also presents a virtual COM port for general pur pose application serial data transfer The Packet Trace Interface PTI is also supported which offers invaluable debug information about transmitted a...

Page 11: ...For additional information on the connectors see the following sub chapters Breakout Pads Mini Simplicity Connector bottom side VMCU RST PA9 VCOM_TX PA2 SWDIO PC2 PTI_FRAME GND VCOM_RX PA10 SWO PA3 SWCLK PA1 PTI_DATA PC3 Mini Simplicity Connector Pin 1 VMCU 5V 3V3 GND RESET PA02 PA01 PA03 GND PA05 PA09 PA10 PB01 PB02 PA07 PA08 PB00 PB03 Figure 3 7 EFR32FG23 Dev Kit Connectors UG508 EFR32FG23 Dev K...

Page 12: ...ut pads and other functions on the EFR32FG23 Dev Kit The table below includes an overview of the breakout header and functionality that is shared with the kit Table 3 2 Breakout Header Pinout Pin Connection Shared Feature 1 VMCU VMCU voltage rail 2 GND Ground 3 RESET EFR32FG23 reset pin 4 PA2 Debug SWDIO 5 PA1 Debug SWCLK 6 PA3 Debug SWO 7 PA5 BUTTON1 8 PA9 VCOM Tx 9 P10 VCOM Rx 10 PB1 BUTTON0 11 ...

Page 13: ...tion Description 1 AEM VMCU Target voltage on the debugged application May be supplied and monitored by the AEM on an external debugger 2 GND GND Ground 3 RST RESET EFR32FG23 reset 4 VCOM_RX PA10 Virtual COM Rx 5 VCOM_TX PA09 Virtual COM Tx 6 SWO PA03 Serial Wire Output 7 SWDIO PA02 Serial Wire Data 8 SWCLK PA01 Serial Wire Clock 9 PTI_FRAME PC02 Packet Trace Frame 10 PTI_DATA PC03 Packet Trace Da...

Page 14: ...the on board debugger by connecting it to the Mini Simplicity Connector This allows ad vanced debugging features as described in section 4 2 External Debugger When using an external debugger it is very important to make sure that there is no power source present on the EFR32FG23 Dev Kit as the external debugger might source a voltage on the target power domain VMCU Important When connecting an ext...

Page 15: ... in AEM Power cycling of the board if necessary can easily be done by flipping the power switch on the Wireless STK to BAT and back to AEM assuming a battery is not inserted in the Wireless STK mainboard It is possible to have the EFR32FG23 Dev Kit powered by a battery and still use the Mini Simplicity Connector with a Wireless STK mainboard for debugging and communication In this case the power s...

Page 16: ...G_O0 SUBG_O1 and two RX inputs SUBG_I0 SUBG_I1 The matching network con nects one of the TX outputs SUBG_O0 and one of the RX inputs SUBG_I0 to a single SMA connector while transforming the impe dances to 50 Ohms Careful design procedure was followed to ensure that the RX input circuitry does not load down the TX output path while in TX mode and that the TX output circuitry does not degrade receiv...

Page 17: ...nd radiated measurements Note Further in this document EIRP Effective Isotropic Radiated Power will be used instead of e r p Effective Radiated Power for the comparison of the radiated limits and measurement results The 25 mW e r p radiated limit is equivalent to 16 1 dBm EIRP For the unwanted emission limits see the table below Table 5 2 ETSI EN 300 220 1 Spurious Domain Emission Limits in e r p ...

Page 18: ...7 regulation requires the 6 dB bandwidth of the modulated signal to be not less than 500 kHz It also specifies the following Spectrum Analyzer settings for measuring the unwanted emissions above 1 GHz Detector Average RBW 1 MHz Based on measurements among the available modulation schemes the one with the narrowest 6 dB bandwidth that complies with the 500 kHz condition is the 2GFSK modulation with...

Page 19: ...al Output Spectrum of the BRD2600A at 868 MHz with 14 dBm output power As shown in the figure above the fundamental is around 14 dBm so it is under the ETSI limit of 16 1 dBm The unwanted emissions are under their corresponding limit UG508 EFR32FG23 Dev Kit User s Guide Radio silabs com Building a more connected world Rev 1 1 19 ...

Page 20: ...al Output Spectrum of the BRD2600A at 915 MHz with 14 dBm output power As shown in the figure above the fundamental is around 14 dBm so it is under the FCC limit of 30 0 dBm The unwanted emissions are under their corresponding limits UG508 EFR32FG23 Dev Kit User s Guide Radio silabs com Building a more connected world Rev 1 1 20 ...

Page 21: ...nce Planes 5 4 2 1 Radiated Measurements in the 868 MHz Band For the 868 MHz radiated power measurements an external whip antenna Chilisin BTEA0019130G8R2A01 was used as a transmitter antenna It was connected to the on board SMA connector The measured radiated powers are shown in the table below Table 5 4 Maximums of the Measured Radiated Powers of BRD2600A Frequency 868 MHz Measured Unmodulated E...

Page 22: ...9th 39 3 YZ H 5 3 44 6 3 3 41 2 10th 47 1 XY V N A 0 is used 47 1 5 9 41 2 As shown in the table above with 14 dBm output power the radiated power of the fundamental is compliant with the 30 0 dBm limit The 9th harmonic is above the limit in case of the unmodulated carrier transmission But with the relaxation of the applicable modulation schemes the margin is at least 3 3 dB 5 4 2 3 Antenna Patter...

Page 23: ...revious section the BRD2600A board is compliant with the emission limits of the ETSI ETSI EN 300 200 1 regulation in the 868 MHz Band with 14 dBm output power 5 5 2 Recommendations for 915 MHz FCC 15 247 compliance To be compliant with the FCC 15 247 regulation not only the emission limit requirements should be fulfilled but among others the 6 dB bandwidth requirement as well Although with 14 dBm ...

Page 24: ...lable through Simplicity Studio when the kit documentation pack age has been installed They are also available from the kit page on the Silicon Labs website http www silabs com UG508 EFR32FG23 Dev Kit User s Guide Schematics Assembly Drawings and BOM silabs com Building a more connected world Rev 1 1 24 ...

Page 25: ...is summarized in the table below FG23 DK2600A EFR32FG23 Dev Kit 1632000360 24 08 21 A01 Figure 7 1 Revision Info Table 7 1 Kit Revision History Kit Revision Released Description A01 2021 08 24 Initial kit revision with BRD2600A Rev A02 UG508 EFR32FG23 Dev Kit User s Guide Kit Revision History silabs com Building a more connected world Rev 1 1 25 ...

Page 26: ...printed on the back side of the board Table 8 1 BRD2600A Revision History Board Revision Released Description A02 2021 05 26 Initial version 8 2 Errata There are no known errata UG508 EFR32FG23 Dev Kit User s Guide Board Revision History and Errata silabs com Building a more connected world Rev 1 1 26 ...

Page 27: ...eptember 2021 Fixed image for Fig 5 1 Fixed RF pin names in section 5 1 1 Revision 1 0 September 2021 Initial document version UG508 EFR32FG23 Dev Kit User s Guide Document Revision History silabs com Building a more connected world Rev 1 1 27 ...

Page 28: ... premarket approval is required or Life Support Systems without the specific written consent of Silicon Labs A Life Support System is any product or system intended to support or sustain life and or health which if it fails can be reasonably expected to result in significant personal injury or death Silicon Labs products are not designed or authorized for military applications Silicon Labs product...