EFM32WG Datasheet, PDF (771/834 Pages) List of Unclassifed Manufacturers – The EFM32WG Wonder Gecko is the ideal choice for demanding 8-, 16-, and 32-bit energy sensitive applications.

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32.5.21 GPIO_CTRL - GPIO Control Register
Offset
0x12C
Reset
Access
Bit Position
Name
Bit
Name
Reset
Access Description
31:1
Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
0
EM4RET
0
RW
Enable EM4 retention
Set to enable EM4 retention of output enable, output value and pull enable.
32.5.22 GPIO_CMD - GPIO Command Register
Offset
0x130
Reset
Access
Bit Position
Name
Bit
Name
Reset
Access Description
31:1
Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
0
EM4WUCLR
0
W1
EM4 Wake-up clear
Write 1 to clear all wake-up requests.
32.5.23 GPIO_EM4WUEN - EM4 Wake-up Enable Register
Offset
0x134
Reset
Access
Bit Position
Name
Bit
Name
Reset
Access Description
31:6
Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
5:0
EM4WUEN
0x00
RW
EM4 Wake-up enable
Write 1 to enable wake-up request, write 0 to disable wake-up request.
2013-05-08 - Wonder Gecko Family - d0233_Rev0.50
771
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