Simplicity Studio - Silicon Labs
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User Guide for SILICON LABS models including: EFM32, EFM32 Tiny Gecko Starter Kit, Tiny Gecko Starter Kit, Gecko Starter Kit, Starter Kit, Kit
Apr 26, 2024 — The debug connector on the board supports all three of these modes. UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide. On-Board Debugger silabs.com | ...
SLSTK3301A EFM32 Tiny Gecko S1, TG11 Starter Kit - Silicon Labs
File Info : application/pdf, 28 Pages, 3.17MB
DocumentDocumentUG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide The SLSTK3301A is an excellent starting point to become familiar with the EFM32TM Tiny Gecko TG11 Microcontroller. The Starter Kit contains sensors and peripherals demonstrating some of the EFM32's many capabilities. The kit provides all necessary tools for developing an EFM32 Tiny Gecko TG11 application. TARGET DEVICE · EFM32 Tiny Gecko TG11 Microcontroller (EFM32TG11B520F128GM80) · CPU: 32-bit ARM® Cortex-M0+ · Memory: 128 kB flash and 32 kB RAM KIT FEATURES · USB connectivity · Advanced Energy Monitor (AEM) · SEGGER J-Link on-board debugger · Debug multiplexer supporting external hardware as well as on-board MCU · 8x28 Segment LCD · Inductive LC sensor · Silicon Labs Si7210 Hall-Effect Sensor · Capacitive Touch Slider · 20-pin 2.54 mm header for expansion boards · Breakout pads for direct access to I/O pins · Power sources include USB and CR2032 coin cell battery SOFTWARE SUPPORT · Simplicity StudioTM · IAR Embedded Workbench · Keil MDK silabs.com | Building a more connected world. Copyright © 2024 by Silicon Laboratories Rev. 2.00 Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.3 Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2. Kit Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3. Kit Hardware Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4. Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.1 Breakout Pads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.2 EXP Header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4.3 Debug Connector (DBG) . . . . . . . . . . . . . . . . . . . . . . . . . .11 4.4 Simplicity Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 5. Power Supply and Reset . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5.1 MCU Power Selection . . . . . . . . . . . . . . . . . . . . . . . . . . .13 5.2 Board Controller Power . . . . . . . . . . . . . . . . . . . . . . . . . . .13 5.3 EFM32 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 6. Peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 6.1 Push Buttons and LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . .15 6.2 LCD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 6.3 Capacitive Touch Slider . . . . . . . . . . . . . . . . . . . . . . . . . . .16 6.4 Si7021 Relative Humidity and Temperature Sensor . . . . . . . . . . . . . . . . .16 6.5 Si7210 Hall-Effect Sensor . . . . . . . . . . . . . . . . . . . . . . . . . .17 6.6 LC Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 6.7 Virtual COM Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 7. Advanced Energy Monitor . . . . . . . . . . . . . . . . . . . . . . . . . 20 7.1 Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 7.2 Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 7.3 Accuracy and Performance . . . . . . . . . . . . . . . . . . . . . . . . . .20 8. On-Board Debugger . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 8.1 Debug Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 8.2 Debugging During Battery Operation . . . . . . . . . . . . . . . . . . . . . .23 9. Kit Configuration and Upgrades . . . . . . . . . . . . . . . . . . . . . . . 24 9.1 Firmware Upgrades . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 10. Schematics, Assembly Drawings, and BOM . . . . . . . . . . . . . . . . . . 25 11. Kit Revision History and Errata . . . . . . . . . . . . . . . . . . . . . . . 26 silabs.com | Building a more connected world. Rev. 2.00 | 2 11.1 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 11.2 Errata . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 12. Document Revision History . . . . . . . . . . . . . . . . . . . . . . . . 27 silabs.com | Building a more connected world. Rev. 2.00 | 3 1. Introduction UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Introduction 1.1 Description The SLSTK3301A is an ideal starting point for application development on the EFM32 Tiny Gecko TG11 Microcontrollers. The board features sensors and peripherals, demonstrating some of the many capabilities of the EFM32 Tiny Gecko TG11 Microcontroller. Additionally, the board is a fully featured debugger and energy monitoring tool that can be used with external applications. 1.2 Features · EFM32 Tiny Gecko TG11 Microcontroller · 128 kB Flash · 32 kB RAM · QFN80 package · Advanced Energy Monitoring system for precise current and voltage tracking · Integrated Segger J-Link USB debugger/emulator with the possiblity to debug external Silicon Labs devices · 20-pin expansion header · Breakout pads for easy access to I/O pins · Power sources include USB and CR2032 battery · Silicon Labs Si7021 Relative Humidity and Temperature Sensor · Silicon Labs Si7210 Hall-Effect sensor · 8x28 segment LCD · 2 push buttons and 2 LEDs connected to EFM32 for user interaction · LC tank circuit for inductive proximity sensing of metallic objects · Backup capacitor · 2-segment capacitive touch slider · Crystals for LFXO and HFXO: 32.768 kHz and 48.000 MHz. 1.3 Getting Started Detailed instructions for how to get started with your new SLSTK3301A can be found on the Silicon Labs Web pages: http://www.silabs.com/start-efm32tg1 silabs.com | Building a more connected world. Rev. 2.00 | 4 UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Kit Block Diagram 2. Kit Block Diagram An overview of the EFM32 Tiny Gecko TG11 Starter Kit is shown in the figure below. USB Type-C Connector 8x28 Segment LCD LCD Board Controller DEBUG UART EXP Header GPIO EFM32TG11 MCU Si7021 Temperature & Humidity Sensor I2C Si7210 Hall-Effect Sensor LESENSE LC Sensor GPIO CSEN User Buttons & LEDs Capacitive Touch Slider Figure 2.1. Kit Block Diagram silabs.com | Building a more connected world. Rev. 2.00 | 5 3. Kit Hardware Layout The EFM32 Tiny Gecko TG11 Starter Kit layout is shown below. Debug USB Connector 8x28 Segment LCD CR2032 Battery Holder UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Kit Hardware Layout Debug Connector Simplicity Connector Relative Humidity & Temperature Sensor EFM32TG11 MCU EFM32 Reset Button Expansion Header Backup Capacitor Inductive LC Sensor Power Source Select Capacitive Touch Slider User LEDs User Push Buttons Hall-Effect Sensor Figure 3.1. SLSTK3301A Hardware Layout silabs.com | Building a more connected world. Rev. 2.00 | 6 4. Connectors UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Connectors 4.1 Breakout Pads Most of the EFM32's GPIO pins are available on two pin header rows at the top and bottom edges of the board. These have a standard 2.54 mm pitch, and pin headers can be soldered in if required. In addition to the I/O pins, connections to power rails and ground are also provided. Note that some of the pins are used for kit peripherals or features and may not be available for a custom application without tradeoffs. The figure below shows the pinout of the breakout pads and the pinout of the EXP header on the right edge of the board. The EXP header is further explained in the next section. The breakout pad connections are also printed in silkscreen next to each pin for easy reference. 5V GND BDEN RST F0 F1 (TDO) (TDI) NC NC D2 D5 D6 D7 GND 3V3 J102 Debug Simplicity Connector Connector EXP Header 3V3 5V D6 C15 C14 C8 A12 C10 C11 VMCU Board ID SDA Board ID SCL D7 C9 D5 C13 D2 C1 C0 GND VMCU GND A12 NC A14 C0 C1 C2 NC C12 C13 C14 C15 D8 GND 3V3 J101 Figure 4.1. Breakout Pads and Expansion Header The table below shows the pin connections of the breakout pads. It also shows which kit peripherals or features are connected to the different pins. Table 4.1. Bottom Row (J101) Pinout Pin EFM32 I/O Pin 1 VMCU 2 GND 3 PA12 4 NC 5 PA14 6 PC0 7 PC1 8 PC2 9 NC Shared Feature EFM32 voltage domain (measured by AEM) Ground LCD_BEXT CAN_RX / EXP3 CAN_TX / EXP5 LED1 silabs.com | Building a more connected world. Rev. 2.00 | 7 Pin EFM32 I/O Pin 10 PC12 11 PC13 12 PC14 13 PC15 14 PD8 15 GND 16 3V3 Pin EFM32 I/O Pin 1 5V 2 GND 3 BDEN 4 RST 5 PF0 6 PF1 7 NC (TDO) 8 NC (TDI) 9 NC 10 NC 11 PD2 12 PD5 13 PD6 14 PD7 15 GND 16 3V3 UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Connectors Shared Feature SENSOR_ENABLE Si7210_VOUT / EXP9 UART_TX / EXP12 UART_RX / EXP14 BU_VIN (connected to backup battery) Ground Board controller supply Table 4.2. Top Row (J102) Pinout Shared Feature Board USB voltage Ground EFM32 BOD_ENABLE EFM32 DEBUG_RESETn EFM32 DEBUG_TCK_SWCLK EFM32 DEBUG_TMS_SWDIO Install 0R resistor R300 to connect to PF2 (TDO) Install 0R resistor R301 to connect to PF5 (TDI) LED0 / EXP7 BUTTON0 / EXP11 SENSOR_I2C_SDA / EXP16 SENSOR_I2C_SCL / EXP15 Ground Board controller supply silabs.com | Building a more connected world. Rev. 2.00 | 8 UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Connectors 4.2 EXP Header On the right side of the board, an angled 20-pin EXP header is provided to allow connection of peripherals or plugin boards. The connector contains a number of I/O pins that can be used with most of the EFM32 Tiny Gecko TG11's features. Additionally, the VMCU, 3V3, and 5V power rails are also exposed. The connector follows a standard which ensures that commonly used peripherals such as a SPI, UART, and I2C bus are available on fixed locations on the connector. The rest of the pins are used for general purpose I/O. This layout allows the definition of expansion boards that can plug into a number of different Silicon Labs kits. The figure below shows the EXP header pin assignment for the EFM32 Tiny Gecko TG11 Starter Kit. Because of limitations in the number of available GPIO pins, some of the EXP header pins are shared with kit features. 3V3 20 5V 18 PD6 16 PC15 14 PC14 12 PC8 10 PA12 8 PC10 6 PC11 4 VMCU 2 19 BOARD_ID_SDA 17 BOARD_ID_SCL 15 PD7 13 PC9 11 PD5 9 PC13 7 PD2 5 PC1 3 PC0 1 GND EFM32 I/O Pin Pin Connection 20 3V3 18 5V 16 PD6 14 PC15 12 PC14 10 PC8 8 PA12 6 PC10 4 PC11 2 VMCU Reserved (Board Identification) Figure 4.2. EXP Header Table 4.3. EXP Header Pinout EXP Header Function Shared Feature Board controller supply Board controller USB voltage I2C_SDA SENSOR_I2C_SDA UART_RX UART_TX SPI_CS SPI_SCLK SPI_MISO SPI_MOSI EFM32 voltage domain, included in AEM measurements. Peripheral Mapping I2C0_SDA #1 LEUART0_RX #5 LEUART0_TX #5 USART0_CS #2 USART0_CLK #5 USART0_RX #2 USART0_TX #2 19 BOARD_ID_SDA 17 BOARD_ID_SCL 15 PD7 13 PC9 11 PD5 Connected to Board Controller for identification of add-on boards. Connected to Board Controller for identification of add-on boards. I2C_SCL SENSOR_I2C_SCL I2C0_SCL #1 GPIO BUTTON1 OPAMP_OUT BUTTON0 OPA2_OUT silabs.com | Building a more connected world. Rev. 2.00 | 9 Pin Connection 9 PC13 7 PD2 5 PC1 3 PC0 1 GND EXP Header Function GPIO GPIO CAN_TX CAN_RX Ground UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Connectors Shared Feature Si7210_VOUT LED0 Peripheral Mapping PCNT0_S0IN #0 / LES_CH13 CAN0_TX #0 CAN0_RX #0 silabs.com | Building a more connected world. Rev. 2.00 | 10 UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Connectors 4.3 Debug Connector (DBG) The debug connector serves a dual purpose, based on the debug mode, which can be set up using Simplicity Studio. If the "Debug IN" mode is selected, the connector allows an external debugger to be used with the on-board EFM32. If the "Debug OUT" mode is selected, the connector allows the kit to be used as a debugger towards an external target. If the "Debug MCU" mode (default) is selected, the connector is isolated from the debug interface of both the board controller and the on-board target device. Because this connector is automatically switched to support the different operating modes, it is only available when the board controller is powered (J-Link USB cable connected). If debug access to the target device is required when the board controller is unpowered, this should be done by connecting directly to the appropriate pins on the breakout header. The pinout of the connector follows that of the standard ARM Cortex Debug 19-pin connector. The pinout is described in detail below. Note that even though the connector supports JTAG in addition to Serial Wire Debug, it does not necessarily mean that the kit or the on-board target device supports this. VTARGET 1 GND 3 GND 5 NC 7 Cable Detect 9 NC 11 NC 13 GND 15 GND 17 GND 19 2 TMS / SWDIO / C2D 4 TCK / SWCLK / C2CK 6 TDO / SWO 8 TDI / C2Dps 10 RESET / C2CKps 12 NC 14 NC 16 NC 18 NC 20 NC Figure 4.3. Debug Connector Even though the pinout matches the pinout of an ARM Cortex Debug connector, these are not fully compatible as pin 7 is physically removed from the Cortex Debug connector. Some cables have a small plug that prevents them from being used when this pin is present. If this is the case, remove the plug, or use a standard 2x10 1.27 mm straight cable instead. Table 4.4. Debug Connector Pin Descriptions Pin Number(s) 1 2 4 6 8 10 12 14 16 18 20 9 11, 13 3, 5, 15, 17, 19 Function Note VTARGET Target reference voltage. Used for shifting logical signal levels between target and debugger. TMS / SDWIO / C2D JTAG test mode select, Serial Wire data or C2 data TCK / SWCLK / C2CK JTAG test clock, Serial Wire clock or C2 clock TDO/SWO JTAG test data out or Serial Wire output TDI / C2Dps JTAG test data in, or C2D "pin sharing" function RESET / C2CKps Target device reset, or C2CK "pin sharing" function NC TRACECLK NC TRACED0 NC TRACED1 NC TRACED2 NC TRACED3 Cable detect Connect to ground NC Not connected GND silabs.com | Building a more connected world. Rev. 2.00 | 11 UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Connectors 4.4 Simplicity Connector The Simplicity Connector featured on the EFM32 Tiny Gecko TG11 Starter Kit enables advanced debugging features such as the AEM and Virtual COM port to be used towards an external target. The pinout is illustrated in the figure below. VMCU 1 3V3 3 5V 5 GND 7 GND 9 GND 11 GND 13 GND 15 Board ID SCL 17 Board ID SDA 19 2 Virtual COM TX 4 Virtual COM RX 6 Virtual COM CTS 8 Virtual COM RTS 10 NC 12 NC 14 NC 16 NC 18 NC 20 NC Figure 4.4. Simplicity Connector The signal names in the figure and the pin description table are referenced from the board controller. This means that VCOM_TX should be connected to the RX pin on the external target, VCOM_RX to the target's TX pin, VCOM_CTS to the target's RTS pin, and VCOM_RTS to the target's CTS pin. Note: Current drawn from the VMCU voltage pin is included in the AEM measurements, while the 3V3 and 5V voltage pins are not. To monitor the current consumption of an external target with the AEM, put the on-board MCU in its lowest energy mode to minimize its impact on the measurements. Table 4.5. Simplicity Connector Pin Descriptions Pin Number(s) 1 3 5 2 4 6 8 17 19 10, 12, 14, 16, 18, 20 7, 9, 11, 13, 15 Function VMCU 3V3 5V VCOM_TX VCOM_RX VCOM_CTS VCOM_RTS BOARD_ID_SCL BOARD_ID_SDA NC GND Description 3.3 V power rail, monitored by the AEM 3.3 V power rail 5 V power rail Virtual COM TX Virtual COM RX Virtual COM CTS Virtual COM RTS Board ID SCL Board ID SDA Not connected Ground silabs.com | Building a more connected world. Rev. 2.00 | 12 5. Power Supply and Reset UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Power Supply and Reset 5.1 MCU Power Selection The EFM32 on the Starter Kit can be powered by one of these sources: · The debug USB cable · 3 V coin cell battery The power source for the MCU is selected with the slide switch in the lower left corner of the Starter Kit. The figure below shows how the different power sources can be selected with the slide switch. Advanced Energy Monitor BAT AEM 5 V 3.3 V Advanced USB Type-C Connector LDO SENSE Monitor AEM BAT VMCU 3 V Lithium Battery ( CR2032 ) EFM32 Figure 5.1. Power Switch With the switch in the AEM position, a low noise 3.3 V LDO on the Starter Kit is used to power the EFM32. This LDO is again powered from the debug USB cable. The Advanced Energy Monitor is now connected in series, allowing accurate high-speed current measurements and energy debugging/profiling. With the switch in the BAT position, a 20 mm coin cell battery in the CR2032 socket can be used to power the device. With the switch in this position, no current measurements are active. This is the recommended switch position when powering the MCU with an external power source. Note: The Advanced Energy Monitor can only measure the current consumption of the EFM32 when the power selection switch is in the AEM position. 5.2 Board Controller Power The board controller is responsible for important features, such as the debugger and the AEM, and is powered exclusively through the USB port in the top left corner of the board. This part of the kit resides on a separate power domain, so a different power source can be selected for the target device while retaining debugging functionality. This power domain is also isolated to prevent current leakage from the target power domain when power to the board controller is removed. The board controller power domain is not influenced by the position of the power switch. The kit has been carefully designed to keep the board controller and the target power domains isolated from each other as one of them powers down. This ensures that the target EFM32 device will continue to operate in the BAT mode. silabs.com | Building a more connected world. Rev. 2.00 | 13 UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Power Supply and Reset 5.3 EFM32 Reset The EFM32 MCU can be reset by a few different sources: · A user pressing the RESET button · The on-board debugger pulling the #RESET pin low · An external debugger pulling the #RESET pin low In addition to the reset sources mentioned above, a reset to the EFM32 will also be issued during board controller boot-up. This means that removing power to the board controller (unplugging the J-Link USB cable) will not generate a reset but plugging the cable back in will as the board controller boots up. silabs.com | Building a more connected world. Rev. 2.00 | 14 UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Peripherals 6. Peripherals The Starter Kit has a set of peripherals that showcase some of the EFM32 features. Note that most EFM32 I/Os routed to peripherals are also routed to the breakout pads or the EXP header, which must be taken into consideration when using these I/Os. 6.1 Push Buttons and LEDs The kit has two user push buttons marked BTN0 and BTN1. They are connected directly to the EFM32 and are debounced by RC filters with a time constant of 1 ms. The buttons are connected to pins PD5 and PC9. The kit also features two yellow LEDs marked LED0 and LED1 that are controlled by GPIO pins on the EFM32. The LEDs are connected to pins PD2 and PC2 in an active-high configuration. PD2 (GPIO) PC2 (GPIO) PD5 (GPIO) PC9 (GPIO_EM4WU2) UIF_LED0 UIF_LED1 UIF_BUTTON0 UIF_BUTTON1 User Buttons & LEDs EFM32 Figure 6.1. Buttons and LEDs 6.2 LCD A 36-pin segment LCD is connected to the EFM32's LCD peripheral. The LCD has 8 common lines and 28 segment lines, giving a total of 224 segments in octaplex mode. These lines are not shared on the breakout pads. It is possible to operate only half of the display using 4 common lines giving access to 112 segments in quadruplex mode. This is accomplished by only operating common lines COM0-3 or COM4-7, while leaving the other four common lines disabled. Refer to the kit schematics for details about which segments that will be available when operating the display in this manner. A capacitor connected to the EFM32 LCD peripheral's voltage boost pin is also available on the kit. PC[7,6] PD[4,3] PA[10,9] PC[5,4] PA[6..0] PA[15] PE[15..8] PF[5..2] PB[6..3] PE[7..4] PA14 LCD_SEG[33,32] LCD_SEG[31,30] LCD_SEG[27,26] LCD_SEG[25,24] LCD_SEG[19..13] LCD_SEG[12] LCD_SEG[11..4] LCD_SEG[3..0] LCD_COM[7..4] LCD_COM[3..0] LCD_BEXT EFM32 LCD_SEG LCD_COM 1uF Figure 6.2. Segment LCD 8x28 Segment LCD silabs.com | Building a more connected world. Rev. 2.00 | 15 UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Peripherals 6.3 Capacitive Touch Slider A touch slider utilizing the capacitive touch capability of the EFM32 is located on the bottom side of the board. It consists of two interleaved pads which are connected to PA13 and PB12. PA13 (CSEN APORT1Y/2X CH13) PB12 (CSEN APORT1X/2Y CH28) EFM32 UIF_TOUCH0 UIF_TOUCH1 Capacitive Touch Slider Figure 6.3. Touch Slider The capacitive touch pads work by sensing changes in the capacitance of the pads when touched by a human finger. Sensing the changes in capacitance is done by setting up the EFM32's analog capacitive sense peripheral (CSEN). 6.4 Si7021 Relative Humidity and Temperature Sensor The Si7021 I2C relative humidity and temperature sensor is a monolithic CMOS IC integrating humidity and temperature sensor elements, an analog-to-digital converter, signal 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 humidity and temperature sensors are factory-calibrated and the calibration data is stored in the on-chip non-volatile memory. This ensures that the sensors are fully interchangeable with no recalibration or software changes required. The Si7021 is available in a 3x3 mm DFN package and is reflow solderable. It can be used as a hardware- and software-compatible drop-in upgrade for existing RH/ temperature sensors in 3x3 mm DFN-6 packages, featuring precision sensing over a wider range and lower power consumption. The optional factory-installed cover offers a low profile, convenient means of protecting the sensor during assembly (e.g., reflow soldering) and throughout the life of the product, excluding liquids (hydrophobic/oleophobic) and particulates. The Si7021 offers an accurate, low-power, factory-calibrated digital solution ideal for measuring humidity, dew-point, and temperature, in applications ranging from HVAC/R and asset tracking to industrial and consumer platforms. The I2C bus used for the Si7021, including the pull-up resistors is shared with the Expansion Header as well as the Si7210 hall-effect sensor. The relative humidity and temperature sensor, the hall-effect sensor and pull-up resistors are normally isolated from the I2C line. To use the sensor, PC12 must be set high, which also powers the Si7210. When enabled, the sensors' current consumption is included in the AEM measurements. VMCU VDD PD7 (I2C0_SCL #1) PD6 (I2C0_SDA #1) PC12 (GPIO) SENSOR_I2C_SCL SENSOR_I2C_SDA SCL SDA SENSOR_ENABLE 0: I2C lines are isolated, sensor is not powered 1: Sensor is powered and connected 4.7k 4.7k Si7021 Temperature & Humidity Sensor EFM32 Figure 6.4. Si7021 Relative Humidity and Temperature Sensor Refer to the Silicon Labs web pages for more information: http://www.silabs.com/humidity-sensors silabs.com | Building a more connected world. Rev. 2.00 | 16 UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Peripherals 6.5 Si7210 Hall-Effect Sensor The Si7210 family of hall effect sensors from Silicon Labs combines a chopper-stabilized hall element with a low-noise analog amplifier, 13-bit analog-to-digital converter, and an I2C interface. Leveraging Silicon Labs' proven CMOS design techniques, the Si7210 family incorporates digital signal processing to provide precise compensation for temperature and offset drift. The 13-bit magnetic field strength can be read through the I2C interface at any time. The Si7210 also features an output pin which can provide a digital alert when the measured field is above or below a programmable threshold value. Applications for the Si7210 include mechanical position sensing in consumer, industrial and automotive applications, reed switch replacement, fluid level measurement, speed sensing and control knobs and switches. The I2C bus used for the Si7210, including the pull-up resistors is shared with the Expansion Header as well as the Si7021 relative humidity and temperature (RHT) sensor. The hall-effect sensor, the RHT sensor and the pull-up resistors are normally isolated from the I2C line. To use the sensor, PC12 must be set high, which also powers the Si7021. When enabled, the sensors' current consumption is included in the AEM measurements. PD7 (I2C0_SCL #1) PD6 (I2C0_SDA #1) PC13 (GPIO) PC12 (GPIO) SI7210_VOUT VOUT Si7210 Hall-Effect Sensor EFM32 Figure 6.5. Si7210 Hall-Effect Sensor Refer to the Silicon Labs web pages for more information: http://www.silabs.com/magnetic-sensors silabs.com | Building a more connected world. Rev. 2.00 | 17 UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Peripherals 6.6 LC Sensor An inductive-capacitive sensor for demonstrating the Low Energy Sensor Interface (LESENSE) is located on the bottom right of the board. The LESENSE peripheral uses the voltage digital-to-analog converter (VDAC) to set up an oscillating current through the inductor and then uses the analog comparator (ACMP) to measure the oscillation decay time. The oscillation decay time will be affected by the presence of metal objects within a few millimeters of the inductor. The LC sensor can be used for implementing a sensor that wakes up the EFM32 from sleep when a metal object comes close to the inductor, which again can be used as a utility meter pulse counter, door alarm switch, position indicator or other applications where one wants to sense the presence of a metal object. PB11 (VDAC0_OUT0) DAC_LC_EXCITE series_resistor inductor 330 pF 100 nF PC3 (ACMP0X/0Y CH3) LES_LC_SENSE 1.5 k LC Sensor EFM32 Figure 6.6. LC Metal Sensor For more information about the LC sensor usage and operation, refer to the application note, "AN0029: Low Energy Sensor Interface -Inductive Sense", which is available in Simplicity Studio or in the document library on the Silicon Labs website. silabs.com | Building a more connected world. Rev. 2.00 | 18 UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Peripherals 6.7 Virtual COM Port An asynchronous serial connection to the board controller is provided for application data transfer between a host PC and the target EFM32, which eliminates the need for an external serial port adapter. PD0 (US1_TX #1) PD1 (US1_RX #1) VCOM_TX VCOM_RX Isolation Switch Board Controller USB Host Computer PA8 (GPIO) VCOM_EN EFM32 Figure 6.7. Virtual COM Port Interface The Virtual COM port consists of a physical UART between the target device and the board controller, and a logical function in the board controller that makes the serial port available to the host PC over USB. The UART interface consists of two pins and an enable signal. Table 6.1. Virtual COM Port Interface Pins Signal VCOM_TX VCOM_RX VCOM_ENABLE Description Transmit data from the EFM32 to the board controller Receive data from the board controller to the EFM32 Enables the VCOM interface, allowing data to pass through to the board controller Note: The VCOM port is only available when the board controller is powered, which requires the J-Link USB cable to be inserted. silabs.com | Building a more connected world. Rev. 2.00 | 19 7. Advanced Energy Monitor UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Advanced Energy Monitor 7.1 Usage The Advanced Energy Monitor (AEM) data is collected by the board controller and can be displayed by the Energy Profiler, available through Simplicity Studio. By using the Energy Profiler, current consumption and voltage can be measured and linked to the actual code running on the EFM32 in realtime. 7.2 Theory of Operation To accurately measure current ranging from 0.1 µA to 47 mA (114 dB dynamic range), a current sense amplifier is utilized together with a dual gain stage. The current sense amplifier measures the voltage drop over a small series resistor. The gain stage further amplifies this voltage with two different gain settings to obtain two current ranges. The transition between these two ranges occurs around 250 µA. Digital filtering and averaging is done within the board controller before the samples are exported to the Energy Profiler application. During kit startup, an automatic calibration of the AEM is performed, which compensates for the offset error in the sense amplifiers. 5V LDO 3.3V 4.7 Sense Resistor Power Select Switch VMCU AEM Processing Current Sense Amplifier G0 Multiple Gain Stages G1 EFM32 Peripherals Figure 7.1. Advanced Energy Monitor 7.3 Accuracy and Performance The AEM is capable of measuring currents in the range of 0.1 µA to 47 mA. For currents above 250 µA, the AEM is accurate within 0.1 mA. When measuring currents below 250 µA, the accuracy increases to 1 µA. Although the absolute accuracy is 1 µA in the sub 250 µA range, the AEM is able to detect changes in the current consumption as small as 100 nA. The AEM produces 6250 current samples per second. silabs.com | Building a more connected world. Rev. 2.00 | 20 UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide On-Board Debugger 8. On-Board Debugger The SLSTK3301A contains an integrated debugger, which can be used to download code and debug the EFM32. In addition to programming the EFM32 on the kit, the debugger can also be used to program and debug external Silicon Labs EFM32, EFM8, EZR32, and EFR32 devices. The debugger supports three different debug interfaces used with Silicon Labs devices: · Serial Wire Debug, which is used with all EFM32, EFR32, and EZR32 devices · JTAG, which can be used with EFR32 and some EFM32 devices · C2 Debug, which is used with EFM8 devices To ensure accurate debugging, use the appropriate debug interface for your device. The debug connector on the board supports all three of these modes. silabs.com | Building a more connected world. Rev. 2.00 | 21 UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide On-Board Debugger 8.1 Debug Modes To program external devices, use the debug connector to connect to a target board and set the debug mode to [Out]. The same connector can also be used to connect an external debugger to the EFM32 MCU on the kit by setting debug mode to [In]. Selecting the active debug mode is done in Simplicity Studio. Debug MCU: In this mode, the on-board debugger is connected to the EFM32 on the kit. Host USB Computer Board Controller EFM32TG11 DEBUG HEADER External Hardware Figure 8.1. Debug MCU Debug OUT: In this mode, the on-board debugger can be used to debug a supported Silicon Labs device mounted on a custom board. Host USB Computer Board Controller EFM32TG11 DEBUG HEADER External Hardware Figure 8.2. Debug OUT Debug IN: In this mode, the on-board debugger is disconnected and an external debugger can be connected to debug the EFM32 on the kit. Host USB Computer Board Controller EFM32TG11 DEBUG HEADER External Debug Probe Figure 8.3. Debug IN Note: For "Debug IN" to work, the kit board controller must be powered through the Debug USB connector. silabs.com | Building a more connected world. Rev. 2.00 | 22 UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide On-Board Debugger 8.2 Debugging During Battery Operation When the EFM32 is battery-powered and the J-Link USB is still connected, the on-board debug functionality is available. If the USB power is disconnected, the Debug IN mode will stop working. If debug access is required when the target is running off another energy source, such as a battery, and the board controller is powered down, make direct connections to the GPIOs used for debugging, which are exposed on the breakout pads. silabs.com | Building a more connected world. Rev. 2.00 | 23 UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Kit Configuration and Upgrades 9. Kit Configuration and Upgrades The kit configuration dialog in Simplicity Studio allows you to change the J-Link adapter debug mode, upgrade its firmware, and change other configuration settings. To download Simplicity Studio, go to silabs.com/simplicity. In the main window of the Simplicity Studio's Launcher perspective, the debug mode and firmware version of the selected J-Link adapter are shown. Click the [Change] link next to any of these settings to open the kit configuration dialog. Figure 9.1. Simplicity Studio Kit Information Figure 9.2. Kit Configuration Dialog 9.1 Firmware Upgrades You can upgrade the kit firmware through Simplicity Studio. Simplicity Studio will automatically check for new updates on startup. You can also use the kit configuration dialog for manual upgrades. Click the [Browse] button in the [Update Adapter] section to select the correct file ending in .emz. Then, click the [Install Package] button. silabs.com | Building a more connected world. Rev. 2.00 | 24 UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Schematics, Assembly Drawings, and BOM 10. Schematics, Assembly Drawings, and BOM Schematics, assembly drawings, and bill of materials (BOM) are available through Simplicity Studio when the kit documentation package has been installed. They are also available from the kit page on the Silicon Labs website: silabs.com. silabs.com | Building a more connected world. Rev. 2.00 | 25 11. Kit Revision History and Errata UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Kit Revision History and Errata 11.1 Revision History The kit revision can be found printed on the box label of the kit, as outlined in the figure below. EFM32 Tiny Gecko TG11 Starter Kit SLSTK3301A 10-11-23 174400046 B00 Figure 11.1. Revision Information Table 11.1. Kit Revision History Kit Revision B00 A02 A01 A00 Released 10 November 2023 10 July 2018 29 January 2018 24 August 2017 Description Kit revised due to BRD2102A revised to BRD2102B rev A01. Kit revised due to BRD2102A upped to A06. Inclusion of BRD2102A rev A05. Initial Kit Revision. 11.2 Errata There are no known errata at present. silabs.com | Building a more connected world. Rev. 2.00 | 26 12. Document Revision History 2.00 April 2024 Updated user guide to reflect new major board revision (BRD2102B). 1.00 November 2017 Initial document version. UG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide Document Revision History silabs.com | Building a more connected world. Rev. 2.00 | 27 Simplicity Studio One-click access to MCU and wireless tools, documentation, software, source code libraries & more. Available for Windows, Mac and Linux! IoT Portfolio www.silabs.com/IoT SW/HW www.silabs.com/simplicity Quality www.silabs.com/quality Support & Community www.silabs.com/community Disclaimer Silicon Labs intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers using or intending to use the Silicon Labs products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific device, and "Typical" parameters provided can and do vary in different applications. Application examples described herein are for illustrative purposes only. Silicon Labs reserves the right to make changes without further notice to the product information, specifications, and descriptions herein, and does not give warranties as to the accuracy or completeness of the included information. Without prior notification, Silicon Labs may update product firmware during the manufacturing process for security or reliability reasons. Such changes will not alter the specifications or the performance of the product. Silicon Labs shall have no liability for the consequences of use of the information supplied in this document. This document does not imply or expressly grant any license to design or fabricate any integrated circuits. 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