STM32 microcontroller GPIO configuration for hardware ...
August 2021AN4899 Rev 21/311AN4899Application noteSTM32 microcontroller GPIO configuration for hardware settings and low-power consumptionIntroductionThe STM32 microcontroller general-purpose input /output pin (GPIO) provides many ways to interface with external circuits within an application framework. This application note provides basic information about GPIO configurations as well as guidelines for hardware and software developers to optimize the power performance of their STM32 32-bit Arm Cortex MCUs using the GPIO application note must be used in conjunction with the related STM32 reference manual and datasheet available at Rev 2Contents1General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62Documentation conventions.
Analog option Input buffer Ouput buffer on/off on/off V. SS. Alternate function output Input data register Alternate function input V. SS. Analog switch Analog IP. Analog. V V. DD. Digital. V. DDA. Parasitic diode and resistor R. PU. R. PD. GPIO functional description AN4899. 10/31 AN4899 Rev 2. Figure 2. Three-volt or five-volt tolerant GPIO ...
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