Mikrobus Socket - Silicon Laboratories BGM220 Explorer Kit User Manual

3.6.2 MikroBUS Socket

The BGM220 Explorer Kit features a mikroBUS™ socket compatible with mikroBUS add-on boards. MikroBUS add-on boards can ex-
pand the functionality of the kit with peripherals such as sensors and LCDs. Add-on boards follow the mikroBUS socket pin mapping,
and communicates with the on-kit BGM220P through UART, SPI or I
BUS add-on boards can be powered by the 5V or VMCU power rails, which are available on the mikroBUS socket.
The pinout of the BGM220P on the kit is made such that all required peripherals are available on the mikroBUS socket. The I
are, however, shared with the Qwiic connector, and all mikroBUS signals are also routed to adjacent breakout pads.
When inserting a mikroBUS add-on board, refer to the orientation notch on the BGM220 Explorer Kit, shown in the figure below, to
ensure correct orientation. Add-on boards have a similar notch that needs to be lined up with the one shown below.
The table below gives an overview of the mikroBUS socket pin connections to the BGM220P.
mikro- mikroBUS Pin
BUS Pin Function
Name
AN Analog
RST Reset
CS SPI Chip Select
SCK SPI Clock
MISO SPI Master Input
Slave Output
MOSI SPI Master Output
Slave Input
PWM PWM output
INT Hardware Interrupt
RX UART Receive
TX UART Transmit
SCL I2C Clock
SDA I2C Data
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Figure 3.6. mikroBUS Add-on Board Orientation
Table 3.2. mikroBUS Socket Pinout
Connection
PB00 BREAKOUT_RIGHT10
PC06 BREAKOUT_RIGHT9
PC03 BREAKOUT_RIGHT8
PC02 BREAKOUT_RIGHT7
PC01 BREAKOUT_RIGHT6
PC00 BREAKOUT_RIGHT5
PB04 BREAKOUT_LEFT10
PB03 BREAKOUT_LEFT9
PB02 BREAKOUT_LEFT8
PB01 BREAKOUT_LEFT7
PD02 QWIIC_I2C_SCL, BREAKOUT_LEFT6
PD03 QWIIC_I2C_SDA, BREAKOUT_LEFT5
2
C. Several GPIOs are exposed on the mikroBUS socket. Mikro-
mikroBUS
socket
Orientation notch
Shared Feature
UG465: BGM220 Explorer Kit User's Guide
Hardware
2
Suggested Peripheral Mapping
IADC0
USARTx.CS
USARTx.CLK
USARTx.RX
USARTx.TX
TIMER0.CCx
USARTx.RX
USARTx.TX
I2Cx.SCL
I2Cx.SDA
Rev. 1.0 | 11
C signals