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Will GPIO maintain its original state at wake-up reset as GPIO remains its original state after entering SPD mode?   Datum:2018-11-26

GPIO can maintain its original state after entering Standby Power-down mode (SPD0/1 mode). However, after wake-up reset, the GPIO status may be reset due to different trigger sources. The GPIO status includes MFP, I/O modes, and High/Low.

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In summary, the GPIO state can be maintained when the trigger source is the wake-up source, and the GPIO state will be reset when the trigger source is the reset source.

 

In addition, if the GPIO status is reset when the trigger source is the wake-up source, user can set the IOHR (CLK_IOPDCTL[0]) register to reset the GPIO status.

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Produkte: Mikrocontroller ,Arm Cortex-M4-MCUs ,M481-Base-Serie ,M482-USB-FS-OTG-Serie ,M483-CAN-Serie ,M484-USB-HS-OTG-Serie ,M485-Crypto-Serie ,M487-Ethernet-Serie
Applikationen:
Funktion: Peripherals,I/O,GPIO,System Operation,Deep Power-down,Power-down,Reset
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