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FT51AQ-R датащи(PDF) 24 Page - Future Technology Devices International Ltd. |
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FT51AQ-R датащи(HTML) 24 Page - Future Technology Devices International Ltd. |
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24 / 43 page ![]() Copyright © Future Technology Devices International Limited 24 FT51A Advanced MCU with 8051 Compatible Core IC Datasheet Version 1.5 Doc ument N o.: FT _000877 C learance N o.: FT DI#420 4.5 Digital IO AC Characteristics Please refer to the DIO section of the FT51A Programmer’s Guide on how to enable / disable the Schmitt trigger, control the slew rate and determine drive strength. Parameter Value load load Input Timings (ns) 0.004pF tplh tphl 1.32pF tplh tphl Schmitt Trigger 0 1.25 0.98 2.48 2.13 1 1.27 1.08 2.51 2.24 Output Timings (ns) Slew Rate = Normal 6pF tplh tphl 120pF tplh tphl Drive Strength 00 3.33 2.37 13.34 11.13 01 3.13 2.21 8.22 6.78 10 3.02 2.15 6.46 5.32 11 2.95 2.10 5.57 4.59 Output Timings (ns) Slew Rate = Slow 6pF tplh tphl 120pF tplh tphl Drive Strength 00 3.33 2.37 13.34 1.13 01 3.33 2.37 9.24 7.81 10 3.33 2.4 7.80 6.61 11 3.32 2.39 7.05 5.97 Table 4-9 – Digital IO AC Characteristics |
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