The SC908SN/AU6989SN controllers are "chameleons" in the storage world, often rebranded or used in diverse products:
Supports MLC, TLC, and new generation SDR/DDR NAND flash from major manufacturers like Micron, Samsung, and Hynix. alcor micro sc908sn au6989sn
Heavily used in mass-produced, unbranded promotional flash drives. and Hynix. Heavily used in mass-produced
Because the AU6989SN is well-documented, it is popular among hobbyists for making custom flash drives from "Reclaimed" NAND chips (e.g., from dead SSDs). from dead SSDs).