Silicon Laboratories BGM220 Explorer Kit User manual
UG465: BGM220 Explorer Kit User's Guide
The BGM220 Explorer Kit is an ultra-low cost, small form factor
development and evaluation platform for the BGM220P Wireless
Gecko Bluetooth® Module.
The BGM220 Explorer Kit is focused on rapid prototyping and concept creation of IoT
applications. It is designed around the BGM220P Module, based on the EFR32BG22
System-on-Chip, which is an ideal device family for developing energy-friendly connec-
ted IoT applications.
The kit features a USB interface, an on-board SEGGER J-Link debugger, one user-LED
and button, and support for hardware add-on boards via a mikroBus socket and a Qwiic
connector. The hardware add-on support allows developers to create and prototype ap-
plications using a virtually endless combination of off-the-shelf boards from mikroE,
sparkfun, AdaFruit, and Seeed Studios.
TARGET DEVICE
• BGM220P Wireless Gecko Bluetooth®
Module (BGM220PC22HNA)
• High performance 2.4 GHz radio
• 32-bit ARM® Cortex®-M33 with 76.8 MHz
maximum operating frequency
• 512 kB flash and 32 kB RAM
KIT FEATURES
• User LED and push button
• 20-pin 2.54 mm breakout pads
• mikroBUS™ socket
• Qwiic® connector
• SEGGER J-Link on-board debugger
• Virtual COM port
• Packet Trace Interface (PTI)
• USB-powered.
SOFTWARE SUPPORT
• Simplicity Studio™
ORDERING INFORMATION
• BGM220-EK4314A
silabs.com | Building a more connected world. Rev. 1.0
Table of Contents
1. Introduction ................................3
1.1 Kit Contents ...............................3
1.2 Getting Started ..............................3
1.3 Hardware Content .............................3
1.4 Kit Hardware Layout ............................4
2. Specifications ...............................5
2.1 Recommended Operating Conditions ......................5
2.2 Current Consumption ............................5
3. Hardware .................................6
3.1 Block Diagram ..............................6
3.2 Power Supply ..............................7
3.3 BGM220P Reset .............................7
3.4 Push Button and LED............................7
3.5 On-board Debugger ............................8
3.6 Connectors ...............................9
3.6.1 Breakout Pads ............................10
3.6.2 MikroBUS Socket ...........................11
3.6.3 Qwiic Connector ............................12
3.6.4 Debug USB Micro-B Connector .......................12
4. Debugging ...............................13
4.1 On-board Debugger ............................13
4.2 Virtual COM Port .............................13
5. Schematics, Assembly Drawings, and BOM ...................14
6. Kit Revision History and Errata .......................15
6.1 Revision History .............................15
6.2 Errata .................................15
7. Board Revision History and Errata ......................16
7.1 Revision History .............................16
7.2 Errata .................................16
8. Document Revision History .........................17
silabs.com | Building a more connected world. Rev. 1.0 | 2
1. Introduction
The BGM220 Explorer Kit has been designed to inspire customers to make IoT devices with the Silicon Labs BGM220P Wireless
Gecko Bluetooth® Module. The kit includes a mikroBUS™ socket and Qwiic® connector, allowing users to add features to the kit with a
large selection of off-the-shelf boards.
Programming the BGM220 Explorer Kit is easily done using a USB Micro-B cable and the on-board J-Link debugger. A USB virtual
COM port provides a serial connection to the target application, and the Packet Trace Interface (PTI) offers invaluable debug informa-
tion about transmitted and received packets in wireless links. The BGM220 Explorer Kit is supported in Simplicity Studio™ and a Board
Support Package (BSP) is provided to give application developers a flying start.
Connecting external hardware to the BGM220 Explorer Kit can be done using the 20 breakout pads which present peripherals from the
BGM220P Wireless Gecko such as I2C, SPI, UART and GPIOs. The mikroBUS socket allows inserting mikroBUS add-on boards which
interface with the BGM220P through SPI, UART or I2C. The Qwiic connector can be used to connect hardware from the Qwiic Connect
System through I2C.
1.1 Kit Contents
The following items are included in the box:
• 1x BGM220 Explorer Kit board (BRD4314A)
1.2 Getting Started
Detailed instructions for how to get started with your new BGM220 Explorer Kit can be found on the Silicon Labs web pages:
silabs.com/start-bgm220ek
1.3 Hardware Content
The following key hardware elements are included on the BGM220 Explorer Kit:
• BGM220P Wireless Gecko Module with 76.8 MHz operating frequency, 2.4 GHz ceramic antenna for wireless transmission, 512 kB
kB flash, and 32 kB RAM
• One LED and one push button
• On-board SEGGER J-Link debugger for easy programming and debugging, which includes a USB virtual COM port and Packet
Trace Interface (PTI)
• MikroBUS™ socket for connecting click boards™ and other mikroBUS add-on boards
• Qwiic® connector for connecting Qwiic Connect System hardware
• Breakout pads for GPIO access and connection to external hardware
• Reset button
UG465: BGM220 Explorer Kit User's Guide
Introduction
silabs.com | Building a more connected world. Rev. 1.0 | 3
1.4 Kit Hardware Layout
The layout of the BGM220 Explorer Kit is shown below.
Top View
Push Button
35.6 mm
55.9 mm
Reset Button
Breakout Pads
USB Micro-B Connector
- Virtual COM port
- Debug access
- Packet trace
LED
Qwiic
Connector
BGM220P
Module
On-board USB
J-Link Debugger
mikroBUS Socket
Figure 1.1. BGM220 Explorer Kit Hardware Layout
UG465: BGM220 Explorer Kit User's Guide
Introduction
silabs.com | Building a more connected world. Rev. 1.0 | 4
2. Specifications
2.1 Recommended Operating Conditions
Parameter Symbol Min Typ Max Unit
USB Supply Input Voltage VUSB - +5.0 - V
Supply Input Voltage (VMCU supplied externally) VVMCU +3.31V
Operating Temperature TOP - +20 - ˚C
1The typical supply voltage to the BGM220P is 3.0 V, but the maximum voltage is a function of temperature and average lifetime cur-
rent load. Over a 10-year lifespan, the average lifetime current load should not exceed 60 mA when the supply voltage is 3.3 V. See the
BGM220P data sheet for more information.
2.2 Current Consumption
The operating current of the board greatly depends on the application and the amount of external hardware connected. The table below
attempts to give some indication of typical current consumptions for the BGM220P and the on-board debugger. Note that the numbers
are taken from the data sheets for the devices. For a full overview of the conditions that apply for a specific number from a data sheet,
the reader is encouraged to read the specific data sheet.
Table 2.1. Current Consumption
Parameter Symbol Condition Typ Unit
BGM220P Current Con-
sumption1
IBGM MCU current consumption in EM0 mode with all peripher-
als disabled (module supply voltage = 3.0 V, VSCALE2,
38.4 MHz crystal, CPU running Prime from flash at 25 ˚C)
28 µA/MHz
Radio system current consumption in receive mode, active
packet reception (VDD = 3.0 V, MCU in EM1 and all MCU
peripherals disabled, HCLK = 38.4 MHz, 1Mbit/s, 2GFSK,
f = 2.4 GHz at 25 ˚C)
3.8 mA
Radio system current consumption in transmit mode (VDD
= 3.0 V, MCU in EM1 and all MCU peripherals disabled,
HCLK = 38.4 MHz, f = 2.4 GHz, CW, 6 dBm output power
at 25 ˚C)
8.4 mA
On-board Debugger Sleep
Current Consumption 2
IDBG On-board debugger current consumption when USB cable
is not inserted (EFM32GG12 EM4S mode current con-
sumption)
80 nA
1 From BGM220P data sheet
2 From EFM32GG12 data sheet
UG465: BGM220 Explorer Kit User's Guide
Specifications
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3. Hardware
The core of the BGM220 Explorer Kit is the BGM220P Wireless Gecko Bluetooth® Module. Refer to section 1.4 Kit Hardware Layout
for placement and layout of the hardware components.
3.1 Block Diagram
An overview of the BGM220 Explorer Kit is illustrated in the figure below.
Expandability
Radio
Debugging
J-Link
Debugger
USB Micro-B
Connector
2.4 GHz
Antenna Button and LED
BGM220P
Module
Breakout Pads
Temperature
& Humidity
Sensor
Ambient
Light & UV
Sensor
Hall Effect
Sensor
User Button
& LED
Serial Flash
External connectivity
Qwiic
Connector
mikroBUS
Socket
Figure 3.1. Kit Block Diagram
UG465: BGM220 Explorer Kit User's Guide
Hardware
silabs.com | Building a more connected world. Rev. 1.0 | 6
3.2 Power Supply
The kit is powered by the debug USB cable as illustrated in the figure below.
USB Micro-B LDO
5V0
IN OUT
Automatic
Isolation
3V3
VMCU
BGM220P
Bluetooth Module
Peripherals
Peripherals
Peripherals
Peripherals
Figure 3.2. BGM220 Explorer Kit Power Topology
The 5 volt power net on the USB bus is regulated down to 3.3 V using an LDO (low-dropout regulator). An automatic isolation circuit
isolates the LDO when the USB cable is not plugged in.
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.
3.3 BGM220P Reset
The BGM220P can be reset by a few different sources:
• A user pressing the RESET button.
• The on-board debugger pulling the #RESET pin low.
3.4 Push Button and LED
The kit has one user push button marked LED0 that is connected to a GPIO on the BGM220P. The button is connected to pin PC07
and it is debounced by an RC filter with a time constant of 1 ms. The logic state of the button is high while the button is not being
pressed, and low when the button is pressed.
The kit also features one yellow LED marked LED0 that is controlled by a GPIO pin on the BGM220P. The LED is connected to pin
PA04 in an active-high configuration.
BGM220P
BGM220P_LED0
BGM220P_BUTTON0
User
Button & LED
PC07 (GPIO.EM4WU8)
PA04 (GPIO)
Figure 3.3. Button and LED
UG465: BGM220 Explorer Kit User's Guide
Hardware
silabs.com | Building a more connected world. Rev. 1.0 | 7
3.5 On-board Debugger
The BGM220 Explorer Kit contains a microcontroller separate from the BGM220P Wireless Gecko that provides the user with an on-
board J-Link debugger through the USB Micro-B port. This microcontroller is referred to as the "on-board debugger", and is not pro-
grammable by the user. When the USB cable is removed, the on-board debugger goes into a very low power shutoff mode (EM4S),
consuming around 80 nA typically (EFM32GG12 data sheet number).
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 and received packets in wireless links.
The figure below shows the connections between the target BGM220P device and the on-board debugger.
Refer to chapter 4. Debugging for more details on debugging.
EFR32MG
BGM220P
PA01 (GPIO.SWCLK)
PA02 (GPIO.SWDIO)
PA03 (GPIO.SWV)
PA05 (USART1.TX)
PA06 (USART1.RX)
PA07 (USART1.RTS)
PA08 (USART1.CTS)
DBG_VCOM_TX
DBG_VCOM_RX
DBG_VCOM_CTS
DBG_VCOM_RTS
DBG_SWCLK
DBG_SWDIO
DBG_SWO
On-Board
J-Link
Debugger
Host
PC USB
DBG_PTI_DATA PC04 (FRC.DOUT)
PC05 (FRC.DFRAME)
DBG_PTI_FRAME
DBG_RESET RESETn
Figure 3.4. On-Board Debugger Connections
UG465: BGM220 Explorer Kit User's Guide
Hardware
silabs.com | Building a more connected world. Rev. 1.0 | 8
3.6 Connectors
The BGM220 Explorer 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.
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
PA4
RST
PA0
Breakout Pads
mikroBUS
Connector
USB Micro-B
Connector
J1 J2
J202 J201
GND
5V
PC7
PD3 - MIKROE_QWIIC_I2C_SDA
PD2 - MIKROE_QWIIC_I2C_SCL
PB1 - MIKROE_UART_TX
PB2 - MIKROE_UART_RX
PB3 - MIKROE_INT
PB4 - MIKROE_PWM
GND
VMCU
PC0 - MIKROE_SPI_MOSI
PC1 - MIKROE_SPI_MISO
PC2 - MIKROE_SPI_SCK
PC3 - MIKROE_SPI_CS
PC6 - MIKROE_RST
PB0 - MIKROE_ANALOG
Qwiic
Connector
P202
P900
Figure 3.5. BGM220 Explorer Kit Connectors
UG465: BGM220 Explorer Kit User's Guide
Hardware
silabs.com | Building a more connected world. Rev. 1.0 | 9
3.6.1 Breakout Pads
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 BGM220P Wireless Gecko's
features. Additionally, the VMCU (main board power rail), 3V3 (LDO regulator output), and 5V power rails are also exposed on the
pads.
The pin-routing on the Wireless Gecko is very flexible, so most peripherals can be routed to any pin. However, pins may be shared
between the breakout pads and other functions on the BGM220 Explorer Kit. The table below includes an overview of the breakout
pads and functionality that is shared with the kit.
Table 3.1. Breakout Pads Pinout
Pin Connection Shared Feature
Left Side Breakout Pins
1 PC07 Button
2 PA04 LED
3 GND Ground
4 5V Board USB voltage
5 PD03 MikroBUS I2C_SDA, Qwiic I2C_SDA
6 PD02 MikroBUS I2C_SCL, Qwiic I2C_SCL
7 PB01 MikroBUS UART_TX
8 PB02 MikroBUS UART_RX
9 PB03 MikroBUS INT
10 PB04 MikroBUS PWM
Right Side Breakout Pins
1 RST BGM220P reset, active low.
2 PA00
3 GND Ground
4 VMCU BGM220P voltage domain
5 PC00 MikroBUS SPI_MOSI
6 PC01 MikroBUS SPI_MISO
7 PC02 MikroBUS SPI_SCK
8 PC03 MikroBUS SPI_CS
9 PC06 MikroBUS RST
10 PB00 MikroBUS Analog
UG465: BGM220 Explorer Kit User's Guide
Hardware
silabs.com | Building a more connected world. Rev. 1.0 | 10
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