EFM32WG Datasheet, PDF (750/834 Pages) List of Unclassifed Manufacturers – The EFM32WG Wonder Gecko is the ideal choice for demanding 8-, 16-, and 32-bit energy sensitive applications.

Figure 32.1. Pin Configuration
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Alternate function override
Alternate function output enable
Alternate function data out
Port Cont rol
DOUT
Out put enable ¹
Out put value
Out put enable
Data out
V_DD
MODEn[ 3:0]
DIN
Pull-up enable
Pull-down enable
Input enable
Filt er enable
Alternate function input
Interrupt input
PRS
Analog connection
Glit ch
suppression
filter
V_SS
ESD
protection
ESD diode
Note
There is no ESD diode to Vdd because if using LCD voltage boost the pin voltage will be
higher than Vdd. Nevertheless there is an ESD protection block against over voltage.
32.3.1 Pin Configuration
In addition to setting the pins as either outputs or inputs, the GPIO_Px_MODEL and GPIO_Px_MODEH
registers can be used for more advanced configurations. GPIO_Px_MODEL contains 8 bit fields
named MODEn (n=0,1,..7) which control pins 0-7, while GPIO_Px_MODEH contains 8 bit fields named
MODEn (n=8,9,..15) which control pins 8-15. In some modes GPIO_Px_DOUT is also used for extra
configurations like pull-up/down and glitch suppression filter enable. Table 32.1 (p. 750) shows the
available configurations.
Table 32.1. Pin Configuration
MODEn Input Output
0b0000 Disabled Disabled
0b0001 Enabled
0b0010
DOUT Pull-
down
0
1
0
1
0
On
1
Pull-
up
On
On
Alt.
Input
strength Filter
On
Description
Input disabled
Input disabled with pull-up
Input enabled
Input enabled with filter
Input enabled with pull-down
Input enabled with pull-up
2013-05-08 - Wonder Gecko Family - d0233_Rev0.50
750
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