User manual

...the world's most energy friendly microcontrollers
2013-10-10 - t0014_0.21 16
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9 Connectors
9.1 Breakout pads
Many of the EFM32's pins are routed out to "breakout pads" at the top and bottom edges of the kit. A
2.54mm pitch pin header can be soldered in for easy access to these pins. Most I/O pins are available,
with the exception of pins used to drive the LCD and some pins used to drive the NAND flash.
Note
Some of the breakout pads are shared by on-board EFM peripherals. The schematic must
be consulted to make sure that it is OK to use a shared pin in your application.
Figure 9.1. Breakout pads and Expansion Header
VMCU PD1 PD2 PD3 PD4 PD5 PD6 PD7 PD8 PD13 PD14 PD0 GND 3V3 5V GND PD15 PB12 PB11 GND PB9 PB10
GND #RESET SWDIO SWCLK SWO GND PC0 PC1 PC2 PC7 GND PF8 PF9 PE3 VMCU 3V3 5V PE2 PE1 PE0 GND PA14 PA13 PA12
3V3
5V
PD6
PD5
PD4
PD3
PD2
PD1
PD0
VMCU
GND
PD7
PC6
PB12
PB11
PC5
PC4
PC3
PC0
GND
EXP Header
Top row Bottom row
Note
Pins PC3, PC4, PC5 and PC6 are also available as surface mounted pads beneath the
USB Micro-AB connector
9.2 Expansion header
On the right hand side of the board an angled 20 pin expansion header is provided to allow connection of
peripherals or plugin boards. The connecter contains a number of I/O pins that can be used with most of
the EFM32 Giant Gecko's features. Additionally, the VMCU, 3V3 and 5V power rails are also exported.
Figure Figure 9.1 shows the pin assignment of the expansion header. With the exception of a few pins,
most of the Expansion Header's pins are the same as those on the EFM32 Gecko or EFM32 Tiny Gecko
starter kits.
Some of the chip peripheral functions that are available on the Expansion Header are listed in table
Table 9.1.