Silicon Laboratories BGM220 Explorer Kit Manuale utente

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

silabs.com | Building a more connected world. Rev. 1.0 | 5

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

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.

PA4

RST

PA0

Breakout Pads

mikroBUS

Connector

USB Micro-B

Connector

J1 J2

J202 J201

GND

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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