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FAQ
Will GPIO maintain its original state at wake-up reset as GPIO remains its original state after entering SPD mode? Issue Date：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.
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.
| Products: | Microcontrollers ,Arm Cortex-M4 MCUs ,M481 Base Series ,M482 USB FS OTG Series ,M483 CAN Series ,M484 USB HS OTG Series ,M485 Crypto Series ,M487 Ethernet Series |
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| Applications: | |
| Function: | Peripherals,I/O,GPIO,System Operation,Deep Power-down,Power-down,Reset |