SPRUIZ1B July 2023 – August 2024 TMS320F28P650DH , TMS320F28P650DK , TMS320F28P650SH , TMS320F28P650SK , TMS320F28P659DH-Q1 , TMS320F28P659DK-Q1 , TMS320F28P659SH-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.