Descriptions
PHISON's PS2251-33 USB-to-Flash micro-controller supports the latest 5Xnm/4Xnm 8K page flash memories and 3 bit-per-cell flash memories. It is the ideal solution to support readyboost feature in Windows Vista. The entire firmware is upgradable thanks to the addition of Programmable RAM, allowing host design flexibility. This chip is specially designed for USB flash disk, USB Disk-On-Module, and embedded applications found in PC motherboard, UMPC, and other portable devices.
Controller Highlights
 Complies with USB 2.0 & 1.1 host interface specification
Pin-to-pin compatible with PS2136, PS2135, PS2231
Build-in hardware 12 / 16 / 24-bit ECC circuit (BCH)
Supports 1x8 and 2x8 Flash I/O
Windows Vista certified and supports ReadyBoost feature
Physical Characteristics
Available in 64-Pin / 48-pin QFP package
Program RAM (Program Upgradable)
Operating Voltage: 2.7~3.6V
Built-in Regulator that supports 3.3V/1.8V Flash I/O
USB Interface
Master SPI (Serial Peripheral Interface) for flexible applications
12MHz crystal driver circuit
Integrated 80C51 compatible 8-bit microprocessor
NAND Flash Support
Supports 8K page flash memories and 3 bit-per-cell flash memories
Other Features
Build-in static and dynamic wear-leveling
Power Saving implemented
Supports VID, PID, serial number & vender information update
Supports multiple partitions and hidden mode |
