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
On the F28002x device, the crystal pin X1 also doubles as a GPIO (GPIO19).
If using a F28002x device in a F28004x board, the X1 pin can be used as GPIO19 after making the required software changes. Remove the load cap on X1 if one exists and a crystal is not being used as the clock source.
If using a F28004x device in a F28002x board, install the load cap on X1 if using a crystal as the clock source. GPIO19 functionality is not available.