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LS7366R Datasheet(PDF) 6 Page - LSI Computer Systems |
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LS7366R Datasheet(HTML) 6 Page - LSI Computer Systems |
6 / 13 page Parameter Symbol Min. Value Max.Value Unit Remarks Non-Quadrature Mode (See Fig. 6 & 9) Clock A - High Pulse Width t6 12 - ns - Clock A - Low Pulse Width t7 12 - ns - Direction Input B Set-up Time t8S 12 - ns - Direction Input B Hold Time t8H 10 - ns - Clock Frequency (non-Mod-N) fA - 40 MHz fA = (1/(t6 + t7)) Clock to DFLAG/ or t9 20 - ns - LFLAG/ delay DFLAG/ output width t10 12 - ns t10 = t7 Transient Characteristics. (TA = -25˚C to +85˚C, VDD = 3.3V ± 10%) Parameter Symbol Min. Value Max.Value Unit Remarks (See Fig. 2) SCK High Pulse Width tCH 120 - ns - SCK Low Pulse Width tCL 120 - ns - SS/ Set Up Time tCSL 120 - ns - SS/ Hold Time tCSH 120 - ns - Quadrature Mode (See Fig. 5, 7 & 8) fCKI High Pulse Width t1 24 - ns - fCKI Pulse Width t2 24 - ns - fCKI Frequency fFCK - 20 MHz - Effective Filter Clock fF Period t3 50 - ns t3 = t1+t2, MDR0 <7> = 0 t3 100 - ns t3 = 2(t1+t2), MDR0 <7> = 1 Effective Filter Clock fF frequency fF - 20 MHz fF = 1/ t3 Quadrature Separation t4 52 - ns t4 > t3 Quadrature Clock Pulse Width t5 105 - ns t5 ≥ 2t3 Quadrature Clock frequency fQA, fQB - 4.5 MHz fQA = fQB < 1/4t3 Quadrature Clock to Count Delay tQ1 4t3 5t3 - - x1/x2/x4 Count Clock Pulse Width tQ2 25 - ns tQ2 = (t3)/2 Index Input Pulse Width tid 60 - ns tid > t4 Index Set Up Time tis - 10 ns - Index Hold Time tih - 10 ns - Quadrature clock to tfl 4.5t3 5.5t3 ns - DFLAG/ or LFLAG/ delay DFLAG/ output width tfw 52 - ns tfw = t4 Non-Quadrature Mode (See Fig. 6 & 9) Clock A - High Pulse Width t6 24 - ns - Clock A - Low Pulse Width t7 24 - ns - Direction Input B Set-up Time t8S 24 - ns - Direction Input B Hold Time t8H 24 - ns - Clock Frequency (non-Mod-N) fA - 40 MHz fA = (1/(t6 + t7)) Clock to DFLAG/or t9 40 - ns - LFLAG/ delay DFLAG/ output width t10 24 - ns t10 = t7 7366R-041906-6 |
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