The general-purpose interface combines eight general-purpose input/output (GPIO) banks.
Each GPIO module provides 32 dedicated general-purpose pins with input and output capabilities; thus, the general-purpose interface supports up to 256 (8 × 32) pins. Since some of the pins are reserved in this Device, general-purpose interface supports up to 186 pins.
These pins can be configured for the following applications:
For more information, see section General-Purpose Interface (GPIO) of the Device TRM.