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No.1, Qun Yi Road, Jhunan, Miaoli, Taiwan 350, R.O.C.
Tel : +886-37-586-896 Fax : +886-37-587-868
Email : [email protected] [email protected]




Phison Electronics Corporation


USB 2.0 Flash Controller Specification
PS2251-33
Version 1.2




All rights are strictly reserved. Any portion of this paper shall not be reproduced, copied, or translated to
any other forms without permission from Phison Electronics Corporation.

Document Number : S-09003
Phison Electronics Corporation
No.1, Qun Yi Road, Jhunan, Miaoli, Taiwan 350, R.O.C.
Tel : +886-37-586-896 Fax : +886-37-587-868


Table of Contents
A. General Description ............................................................................ 1
B. Controller Features ............................................................................. 2
C. BLOCK DIAGRAM ............................................................................... 4
D. Pin Assignment and Description ....................................................... 5
D1. Pin Assignment - 64pins ......................................................................5
D2. Pins Listed in Numeric Order