Renesas is a wide-ranging semiconductor manufacturer offering most anything integrated circuit you could want. Among their offerings is AT45DB161E-SSHFHC-T, which is also available in an HA-T suffix variation. Does this difference affect the part’s performance?
The difference is subtle, but it does affect performance. The HC version is arranged in a binary 512x4096 page structure, while the HA version is arranged in a standard 528x4096 structure, per page 70 of the product’s datasheet.