Another area where the SM3265AC brings tangible improvements is its NAND flash interface—the "nervous system" connecting the controller to the memory chips. The SM3265AB relied on a standard ONFI 2.3-compatible interface, which worked well for early Toggle Mode 1.0 and ONFI 2.x NAND chips but struggled with the higher-speed synchronous interfaces of modern 3D NAND. The AC variant introduces two key technologies to overcome these challenges:
: One of the SM3265's defining characteristics is its ability to reliably use lower-grade NAND flash that other controllers might struggle to manage. sm3265ac exclusive
To maintain data integrity, especially with high-density QLC, the controller utilizes a powerful BCH ECC (Error Correcting Code) engine. This allows for the correction of bit errors that can occur during high-speed write operations. Another area where the SM3265AC brings tangible improvements