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FT313HP-R 数据表(PDF) 45 Page - Future Technology Devices International Ltd. |
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FT313HP-R 数据表(HTML) 45 Page - Future Technology Devices International Ltd. |
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45 / 67 page ![]() Copyright © 2013 Future Technology Devices International Limited 45 Document No.: FT_000589 FT313H USB2.0 HS Host Controller Datasheet Version 1.2 Clearance No.: FTDI# 318 Input voltage on pin X1/CLKIN - 3.3 - V Recommended accuracy of the clock frequency is 50ppm for the crystal. Table 6-8 System clock characteristics Analog I/O pins (DP/DM) dynamic characteristics: Parameter Description Minimum Typical Maximum Units Conditions Driver characteristic for high speed Thsr High speed differential rise time 500 - - ps - Thsf High speed differential fall time 500 - - ps - Driver characteristic for full speed Tfr Rise time of DP/DM 4 - 20 ns Cl=50pF 10%~90% of |Voh–Vol| Tff Fall time of DP/DM 4 - 20 ns Cl=50pF 10%~90% of |Voh–Vol| Tfrma Differential rise/fall time matching 90 - 110 % The first transition exclude from the idle mode Driver characteristic for low speed Tlr Rise time of DP/DM 75 - 300 ns Cl=200pF~600pF 10%~90% of |Voh–Vol| Tlf Fall time of DP/DM 75 - 300 ns Cl=200pF~600pF 10%~90% of |Voh–Vol| Tlrma Differential rise/fall time matching 80 - 125 % The first transition exclude from the idle mode Table 6-9 Analog I/O pins characteristics |
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