UG419: EFM32WG Gecko Starter Kit
User's Guide
The EFM32WG-STK3800A Starter Kit is an excellent starting point
to become familiar with the
EFM32WG™ Gecko Microcontroller.
The Starter Kit contains sensors and peripherals demonstrating some of the Gecko's
many capabilities. The kit provides all necessary tools for developing an EFM32WG
Gecko application.
TARGET DEVICE
• EFM32WG Gecko Microcontroller
(EFM32WG990F256-B-BGA112
)
•
CPU: 32-bit ARM
®
Cortex-M4 with
floating-point unit
• Memory: 256 kB flash and 32 kB RAM
KIT FEATURES
• USB connectivity
• Advanced Energy Monitor
• SEGGER J-Link on-board debugger
• Debug Multiplexer supporting external
hardware as well as on-board MCU
• User LEDs / Pushbuttons
• 8x20 segment LCD
• Inductive LC sensor
• Photo transistor for light sensing
applications
• USB Micro-AB connector supporting both
host and device mode USB applications
• 2 push buttons and 2 LEDs connected to
EFM32 for user interaction
• Backup battery
• 4-segment 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 Studio™
•
IAR Embedded Workbench
silabs.com | Building a more connected world. Rev. 1.00
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 Expansion 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 EFM32WG Reset .............................14
6. Peripherals ...............................15
6.1 Push Buttons and LEDs ...........................15
6.2 LCD .................................15
6.3 Capacitive Touch Slider ...........................16
6.4 LC Sensor ...............................16
6.5 Ambient Light Sensor............................17
6.6 USB Micro-AB Connector ..........................17
6.7 Opamp Footprint .............................18
6.8 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
silabs.com | Building a more connected world. Rev. 1.00 | 2