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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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FT800Q-R 数据表(PDF) 35 Page - Bridgetek Pte Ltd. |
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FT800Q-R 数据表(HTML) 35 Page - Bridgetek Pte Ltd. |
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35 / 46 page  Copyright © Bridgetek Pte Ltd 35 FT800 Embedded Video Engine Datasheet Version 1.4 Document No.: BRT_000039 Clearance No.: BRT#001 6.4 AC Characteristics 6.4.1 System clock Parameter Value Unit Minimum Typical Maximum 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 6-8 System clock characteristics (Ambient Temperature = -40°C to +85°C) 6.4.2 Host Interface SPI Mode 0 Figure 6-1 SPI Interface Timing Parameter Description VCC(I/O)=1.8 V VCC(I/O)=2.5 V VCC(I/O)=3.3 V Unit Min Max Min Max Min Max Fsclk SPI Clock frequency 0 25 0 30 0 30 Mhz Tsclk SPI clock period 40 - 33 - 33 - ns Tsclkl SPI clock low duration 16 - 13 - 13 - ns Tsclkh SPI clock high duration 16 - 13 - 13 - ns Tsac SPI access time 10 - 10 - 10 - ns Tisu Input Setup 5 - 5 - 5 - ns Tih Input Hold 10 - 10 - 10 - ns Tzo Output enable delay 5 10 5 10 5 10 ns Toz Output disable delay 5 10 5 10 5 10 ns |
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