SPRUIN7C March 2020 – March 2024 TMS320F280021 , TMS320F280021-Q1 , TMS320F280023 , TMS320F280023-Q1 , TMS320F280023C , TMS320F280025 , TMS320F280025-Q1 , TMS320F280025C , TMS320F280025C-Q1
Several system configuration registers are protected from spurious CPU writes by “LOCK” registers. Once these associated LOCK register bits are set, the respective locked registers can no longer be modified by software. See the register descriptions for details.