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FT801Q-R 数据表(PDF) 33 Page - Bridgetek Pte Ltd. |
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FT801Q-R 数据表(HTML) 33 Page - Bridgetek Pte Ltd. |
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33 / 44 page  Copyright © Bridgetek Pte Ltd 33 FT801 Embedded Video Engine Datasheet Version 1.3 Document Reference No.: BRT_000001 Clearance No.: BRT#003 Parameter Description Minimum Typical Maximum Units Conditions Voh Output Voltage High VCCIO-0.4 - - V Ioh=4mA Vol Output Voltage Low - - 0.4 V Iol=4mA Vih Input High Voltage 0.7 X VCCIO - - V - Vil Input Low Voltage - - 0.3 X VCCIO V - Vth Schmitt Hysteresis Voltage 0.28 0.39 0.5 V - Iin Input leakage current -10 - 10 uA Vin = VCCIO or 0 Ioz Tri-state output leakage current -10 - 10 uA Vin = VCCIO or 0 Table 6-4 Digital I/O Pin Characteristics (VCCIO = +2.5V, Standard Drive Level) Parameter Description Minimum Typical Maximum Units Conditions Voh Output Voltage High VCCIO-0.4 - - V Ioh=4mA Vol Output Voltage Low - - 0.4 V Iol=4mA Vih Input High Voltage 0.7 X VCCIO - - V - Vil Input Low Voltage - - 0.3 X VCCIO V - Vth Schmitt Hysteresis Voltage 0.25 0.35 0.5 V - Iin Input leakage current -10 - 10 uA Vin = VCCIO or 0 Ioz Tri-state output leakage current -10 - 10 uA Vin = VCCIO or 0 Table 6-5 Digital I/O Pin Characteristics (VCCIO = +1.8V, Standard Drive Level) 6.3 AC Characteristics 6.3.1 System clock Parameter Value Units Minimum Typical Maximum Internal Relaxation Clock Untrimmed frequency range 4.46 6.7 12.11 MHz Trimmed frequency - 12 - MHz Frequency tuning accuracy -2.5 - +2.5 % Frequency variation over voltage and temperature -3 - +3 % Crystal Frequency - 12.000 - MHz X1/X2 Capacitance - 5 10 pF External clock input Frequency - 12.000 - MHz Duty cycle 45 50 55 % Input voltage on X1/CLKIN - 3.3 - Vp-p Table 6-6 System clock characteristics (Ambient Temperature = -40°C to +85°C) |
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