Breakout Pads - Silicon Laboratories BG22 Explorer Kit User Manual

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 EFR32BG22 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 BG22 Explorer Kit. The table below includes an overview of the breakout pads
and functionality that is shared with the kit.
Pin
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
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Table 3.1. Breakout Pads Pinout
Connection
Left Side Breakout Pins
PC07
PA04
GND
5V
PD03
PD02
PB01
PB02
PB03
PB04
Right Side Breakout Pins
RST
PA00
GND
VMCU
PC00
PC01
PC02
PC03
PC06
PB00
UG509: BG22 Explorer Kit User's Guide
Shared Feature
Button
LED
Ground
Board USB voltage
MikroBUS I2C_SDA, Qwiic I2C_SDA
MikroBUS I2C_SCL, Qwiic I2C_SCL
MikroBUS UART_TX
MikroBUS UART_RX
MikroBUS INT
MikroBUS PWM
EFR32BG22 reset, active low.
Ground
EFR32BG22 voltage domain
MikroBUS SPI_MOSI
MikroBUS SPI_MISO
MikroBUS SPI_SCK
MikroBUS SPI_CS
MikroBUS RST
MikroBUS Analog
Hardware
Rev. 1.1 | 11