EKF5250

www.DataSheet4U.com eKF5250 USB full speed NAND flash controller Preliminary 1. General Description SPECIFICATION The eKF5250 provides a high-performance interface to bridge USB and NAND Flash compliance device which can be used to implement of flash memory storage device with USB interface. It contains a 8-bit RISC processor to greatly reduce firmware development work. The eKF5250 has a phase Lock Loop(PLL) embedded. The PLL provided all clocks needed in this Controller. It needs an externally provided clock operating in 2 Mhz. The eKF5250 can control up to 4 pieces of NAND Flash memory. The flash capacity can be 16M bytes up to 256M bytes. And these chips can be any combination. It has been optimized to support Toshiba and Samsung flash memory designs. The controller has write-protected ability to prevent writing data to flash. For read/write operation, the controller can achieve 1000KB /800KB throughput. This controller can operate in Win XP, Win2000, Windows ME without any driver installation. 2. Features USB Specification v1.1 Compliant USB Mass Storage Class v1.0 Compliant Support 12 Mbits/s Full Speed Serial Data Transmission Support USB Mass Storage Class Bulk-Only Spec. USB bus-powered capability Build in PLL used to generate clock for USB. And MCU. Total 3 Endpoints. Endpoint 0 is the default control endpoint. Endpoint 1 is the Bulk-in endpoint. Endpoint 2 is the Bulk-out endpoint. 4K x 13 on chip ROM(Program). Support wear leveling Support ...