SPRUIY3 February 2023 TMS320F2800133 , TMS320F2800135 , TMS320F2800137 , TMS320F2800152-Q1 , TMS320F2800153-Q1 , TMS320F2800154-Q1 , TMS320F2800155 , TMS320F2800155-Q1 , TMS320F2800156-Q1 , TMS320F2800157 , TMS320F2800157-Q1 , TMS320F280021 , TMS320F280021-Q1 , TMS320F280023 , TMS320F280023-Q1 , TMS320F280023C , TMS320F280025 , TMS320F280025-Q1 , TMS320F280025C , TMS320F280025C-Q1
F28002x and F280013x (for non 64VPM packages) support only internal VREG and have no VREGENZ pin. The VREGENZ pin is replaced with different functions.
F280015x and 64VPM F280013x have a VREGENZ pin, allowing support of both internal VREG and external source.