Boot Block architecture and CFI interface
The Boot Block architecture partitions the memory into separately lockable sectors, typically with a small boot block at the top or bottom of the address map. This allows the system to protect the bootloader code from accidental erase or write during firmware updates. The CFI interface standardizes the command set and query structure across vendors, so the same driver code can work with multiple Flash parts — useful for second-sourcing or migrating to a different density later.
It is ROHS3 compliant. No end-of-life notice or last-time-buy schedule is in effect.