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AM2631: AM2631 MCU Cannot Access Full 16MB Flash – Fails Beyond 8MB

Part Number: AM2631


Tool/software:

Hello experts,
I’m using the AM2631 MCU to communicate with a 16MB external flash. I erase by block (65526 bytes each) before writing data. Writing to address 0x700000 works fine, but erasing and writing at address 0xC00000 fails.
The process is: erase one block → read back to verify → write data → read back again to confirm.

Does the AM2631 only support accessing up to 8MB of flash? Operations beyond that address fail during erase. Could this be a configuration issue? How can I troubleshoot this?
Thank you for your help!