The W55U02 is an USB V1.1 controller for W55Fxx, SPI serial flash or NAND type flash memory. It has an 8-bit microprocessor that provides flexible API functions to support general applications. It is compatible with any PC via USB.

	W55U02-Ax USB1.1 Full Speed Controller Part No. HID Mass Storage I/O level Shifting I/O Pins Interface Code OS supporting W55Fxx SPI Flash NAND Flash W55U02-A3 Y N Y 16 I/O Y Y Y Standard Windows ME/2000/XP/Vista W55U02-A4 N Y Y 16 I/O Y Y Y Standard Windows ME/2000/XP/Vista W55U032A Y Y Y 16 I/O Y Y Y Customer Windows ME/2000/XP/Vista