(19)

(11)

EP 0 759 229 A1

(12)

(43) Date of publication: 26.02.1997 Bulletin 1997/09 (21) Application number: 96907887.0 (22) Date of filing: 01.03.1996

(51) International Patent Classification (IPC):  H03G 3/ 10( . ) H03F 1/ 08( . ) H03F 3/ 45( . ) G05F 3/ 26( . ) H03F 3/ 343( . ) H03H 11/ 04( . ) (86) International application number: PCT/US1996/002434 (87) International publication number: WO 1996/027238 (06.09.1996 Gazette 1996/40)

(84) Designated Contracting States: DE GB (30) Priority: 01.03.1995 US 19950396994 14.03.1995 US 19950403354 (71) Applicant: LATTICE SEMICONDUCTOR CORPORATION Hillsboro, Oregon 97124 (US)	(72) Inventor: GORECKI, James, L. Hillsboro, OR 97124 (US) (74) Representative: Atkinson, Ralph, et al  Atkinson & Co., The Technology Park, 60 Shirland Lane Sheffield S9 3SP Sheffield S9 3SP (GB)