SPRUJ79 November 2024 F29H850TU , F29H859TU-Q1
The following security restrictions apply to updates of the SECCFG sectors:
Each CPU has two SECCFG sectors for storing User Protection Policy (UPP). One sector holds the active policy, while the other is available for updating. The SECVALID register specifies which of the two SECCFG sectors is active for each CPU subsystem.
When updating the SSU configuration, always program the SECCFG image to the reserve (B2/B3) SECCFG sector address, regardless of which sector is currently active. The SSU automatically routes the reserve address to the current inactive sector when a Flash program or erase command is performed. The SECCFG image base addresses are defined in Table 10-3. However, CPU read operations must be addressed to the correct Flash read port address, as defined in Section 10.8.3.
| CPU1/CPU2 | CPU3/CPU4 | CPU1/CPU2 (FOTA/LFU) | CPU3/CPU4 (FOTA/LFU) | |
|---|---|---|---|---|
| Erase/Program | 0x10D8 5000 | 0x10D9 5000 | 0x10D9 9000 | 0x10D9 D000 |
| Read | Refer to Section 10.8.3 | |||