The Alcor Micro AU6989SN-GTC is a highly integrated, low-power USB 2.0 Flash Drive Controller. Designed for mass storage applications, this chip is notable for its support of multiple NAND flash memory types (including legacy SLC, MLC, TLC, and early 3D NAND) and its specific utility in data recovery and low-level flash manipulation. It is a member of the widely recognized AU6989 family, often found in budget-friendly and mid-range USB drives produced between 2015 and 2020.
The AU6989SN-GTC integrates a 32-bit RISC MCU core responsible for wear leveling, bad block management, and logical-to-physical (L2P) address translation. Unlike high-end controllers, it lacks a dedicated DMA engine, relying on the MCU for data movement, which contributes to modest write speeds (typically 5-15 MB/s). alcor micro au6989sn-gtc
Analysis of the Alcor Micro AU6989SN-GTC USB Flash Drive Controller The Alcor Micro AU6989SN-GTC is a highly integrated,
| Parameter | Details | | :--- | :--- | | | AU6989SN-GTC | | Interface | USB 2.0 (Backward compatible with USB 1.1) | | Host Data Rate | High-Speed (480 Mbps) / Full-Speed (12 Mbps) | | NAND Interface | Asynchronous / Synchronous (Toggle/DDR) | | Supported NAND Types | SLC, MLC, TLC, QLC (limited), 3D NAND | | NAND Channels | Single Channel | | Max. Capacity Support | Up to 256 GB (dependent on NAND type and firmware) | | ECC Engine | Hardware BCH ECC (up to 72-bit per 1K bytes, depending on firmware revision) | | Packaging | 48-pin LQFP (typically) | | Operating Voltage | 3.3V (NAND) / 5V (USB VBUS) | | Typical Current | < 150 mA (active), < 50 mA (standby) | The AU6989SN-GTC integrates a 32-bit RISC MCU core