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OCR: ACElectrical Characteristics (Continued) DRIVE WRITE TIMING HDSEL tHDH WGATE (NOTE 11) (NOTE WDATA UUUUL TL/F/9334 -16 Symbol Parameter Conditions Min Units Write Data Pulsa Width 250 kb/s (MFM) 500 300 kb/s (MFM) 416 500 kb/s MFM 250 1000 kb/s(MFM) 225 tHOS Head Select Setup to Write Gate Assertion tHCH Head Select Hold from Write Gate Note 11:Wheneve WGATE assered the WDATA linois active Atthe end.o ach write one dummy oyte DRIVE TRACK ACCESS TIMING DRO-3.MTRO-3 PROGRAMMABLE TL/F /9364 Symbol Parameter Units tOST Direction Setup prior to Step tOH Direction Hold from End of Step step time tSTP Step Pulse Width tiw Index Pulse Width 100 tDRV Drive Select or Motor Time from Write Strobe 100 Electrical snoltiboo tHDS Salect tDST tORV Wnte