Phison PS2251-03, an ultra-high-speed USB-to-Flash micro-controller chip, supports 3X/2X/1X nm flash memory. PS2251-03 is backward compatible with USB 2.0 and USB 1.1.

Controllor Highlights
 Support USB 3.1 GEN1 interface
 Backward complies with USB 2.0 & 1.1 host interface specification
 Built-in enhanced of ECC circuit (the BCH)
 Integrated 8051 compatible 8-bit microprocessor
 Support Super Speed ​​(5Gb / s)
 Support High Speed ​​(480Mb / s), Full Speed ​​(12Mb / s)

 Using the Program RAM (firmware update)
 Available in a EP-TQFP64, EP-LQFP 48 package
 Applied voltage: 4.5V ~ 5.5V
 Built-in regulator support the 3.3V/1.8V flash memory I / O interface

Support interface
 USB 3.1 GEN1

NAND flash memory support
 Support 3X / 2X / 1X NAND flash memory
 Support SLC / MLC / TLC flash memory
 Support the Open NAND Flash Interface (ONFI)
 Support of Toggle-mode DDR flash memory

Other Features
 Support Global Wear-Leveling
 Power Saving implemented
 Supports VID, PID, serial number & vender information update
 Supports multiple partitions and hidden mode