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ISPLSI3256E100LB320 Datasheet(PDF) 9 Page - Lattice Semiconductor |
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ISPLSI3256E100LB320 Datasheet(HTML) 9 Page - Lattice Semiconductor |
9 / 15 page Specifications ispLSI 3256E 9 ispLSI 3256E Timing Model Note: Calculations are based upon timing specifications for the ispLSI 3256E-100L. GLB Reg Delay I/O Pin (Output) ORP Delay Feedback 4 PT Bypass 20 PT XOR Delays Control PTs Input Register I/O Pin (Input) Y0,1,2 Y3,4 D Q GRP GLB Reg Bypass ORP Bypass DQ RST RE OE CK I/O Reg Bypass I/O Cell ORP GLB GRP I/O Cell #25 - 29 #30 #32 #31 #33 - 35 #41 - 43 #50 #53 #54 #44 #45 Reset #24 #51 RST #52 #52 #36 #37 - 40 #48, 49 #46, 47 GOE0,1 TOE 0902/3256E Derivations of tsu, th and tco from the Product Term Clock1 = = = = tsu Logic + Reg su - Clock (min) ( tiobp + tgrp + t20ptxor) + (tgsu) - (tiobp + tgrp + tptck(min)) (#24+ #30+ #34) + (#37) - (#24+ #30+ #43) (2.4 + 2.3 + 4.1) + (0.3) - (2.4 + 2.3 + 3.0) 1.4 ns = = = = th Clock (max) + Reg h - Logic ( tiobp + tgrp + tptck(max)) + (tgh) - (tiobp + tgrp + t20ptxor) (#24+ #30+ #43) + (#38) - (#24+ #30+ #34) (2.4 + 2.3 + 3.6) + (5.0) - (2.4 + 2.3 + 4.1) 4.5 ns = = = = tco Clock (max) + Reg co + Output ( tiobp + tgrp + tptck(max)) + (tgco) + (torp + tob) (#24 + #30 + #43) + (#39) + (#44 + #46) (2.4 + 2.3 + 3.6) + (1.6) + (1.2 + 2.6) 13.7 ns Table 2- 0042-3256E |
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