SFFS700 May 2024 TMS320F28P650DH , TMS320F28P650DK , TMS320F28P650SH , TMS320F28P650SK , TMS320F28P659DH-Q1 , TMS320F28P659DK-Q1 , TMS320F28P659SH-Q1
The C28x CPU includes diagnostics for illegal operations, illegal results (underflow and overflow conditions) and instructions trapping (illegal opcode) that can serve as safety mechanisms. Any access to an invalid memory range will return 0x00000000 data. Access to an erased flash (default state for a new device) will return 0xFFFFFFFF. Both 0x00000000 and 0xFFFFFFFF are decoded as invalid instructions so that an erased flash or cleared memory, or an invalid address will force the CPU to ITRAP. Installation of software handlers to support the hardware illegal operation and instruction trapping is highly recommended
Examples of CPU illegal operation, illegal results and instruction traps include: