SPRACK2A September   2019  – March 2020 TMS320F280021 , TMS320F280021-Q1 , TMS320F280023 , TMS320F280023-Q1 , TMS320F280023C , TMS320F280025 , TMS320F280025-Q1 , TMS320F280025C , TMS320F280025C-Q1 , TMS320F280040-Q1 , TMS320F280040C-Q1 , TMS320F280041 , TMS320F280041-Q1 , TMS320F280041C , TMS320F280041C-Q1 , TMS320F280045 , TMS320F280048-Q1 , TMS320F280048C-Q1 , TMS320F280049 , TMS320F280049-Q1 , TMS320F280049C , TMS320F280049C-Q1

 

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3.1.6 X1 GPIO Functionality

In the F28002x device, the crystal pin X1 can also be used as a GPIO, GPIO19. This is a new feature for the F28002x. The X1 pin can either be used as the crystal input pin or as GPIO19, but not both simultaneously. For details on this functionality, see the TMS320F28002x microcontrollers technical reference manual (SPRUIN7).