1 cypress chip number.
2 Reference design .
3 what type of software you are waiting for.
4 the software you waith for is a driver for interface with pen drive .

1) CY7C67300
2) Cypress CY7C67300 eval board
3) USB to SPI
4) If a "pen drive" the same as a "keychain disk" yes.

Erik

PS
For my purpose I cut down the Eval board to about 1/5th, if you plan to design a device, do not let the size scare you a lot is there for 'universality'