4. Connectors
4.1 Breakout Pads
Most of the EFM32's GPIO pins are available on two pin header rows at the top and bottom edges of the board. These have a standard
2.54 mm pitch, and pin headers can be soldered in if required. In addition to the I/O pins, connections to the different power rails and
ground are also provided. Note that some of the pins are used for kit peripherals or features, and may not be available for a custom
application without trade-offs.
The figure below shows the pinout of these "breakout pads", as well as the pinout of the "Expansion Header" situated on the right-hand
side of the board. The expansion header is further explained in the next section. The breakout pad connections are also printed in silk
screen next to each pin for easy reference.
GND
VMCU
PE3
PE2
PH6
PH3
GND
PH2
PH1
PH0
PG8
PG7
PG6
PI12
PI1
1
3V3
GND
VMCU
PD8
PG15
PI9
PI8
GND
PI7
PI6
PI5
PI4
PI3
PI2
PI1
PI0
3V3
J101
J102
GND
5V
PD7
PD6
PD5
PD1
GND
PF13
PF5
PF4
PF2
PF1
PF0
RST
BDEN
GND
5V
PC15
PC14
PC13
PC12
GND
PC1
1
PC10
PC7
PC6
P
A14
P
A1
1
P
A10
P
A8
PA12
PA13
PC4
PC5
GND
PB11
PB9
PC1
5V
PE10
PE11
PE12
PE13
PE8
PE9
PC0
VMCU
3V3
Board ID SDA
Board ID SCL
EXP Header
Debug
Connector
Simplicity
Connector
Figure 4.1. Breakout Pads and Expansion Header
The table below shows the connections of each pin of the breakout pads. They also show which kit peripherals or features are connec-
ted to the different pins.
Table 4.1. Bottom Row (J101) Pinout
Pin
EFM32
I/O pin
Shared feature
Pin
EFM32
I/O pin
Shared feature
1
VMCU
EFM32 voltage domain (measured by
AEM)
2
VMCU
EFM32 voltage domain (measured by
AEM)
3
GND
Ground
4
GND
Ground
5
PI0
6
PI11
7
PI1
8
PI12
UG287: EFM32 Giant Gecko GG11 Starter Kit User's Guide
Connectors
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