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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AX68004LF датащи(PDF) 44 Page - ASIX Electronics Corporation |
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AX68004LF датащи(HTML) 44 Page - ASIX Electronics Corporation |
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44 / 57 page  44 AX6800x 2/4-Port USB KVM Switch SoC Copyright © 2015 ASIX Electronics Corporation. All rights reserved. 4.4 Power-up/-down Sequence Power-up Sequence Symbol Parameter Conditions Min Typ Max Units Trise3 3.3V power supply rise time. From 0V to 3.3V. - 1.5 - ms Trise2 1.8V power supply rise time. From 0V to 1.8V. - 240 - us T23 VDDK rising to 1.8V to VDDIO rising to 3.3V interval. - 1.2 - ms Tclk 12MHz crystal oscillator start-up time. From VDDIO rising to 3.3V to clock stable of 12MHz crystal oscillator. - 2.0 - ms Trst POR asserted low level interval. From VDDK rising to 1.8V to POR going high. - 920 - us Note: 1. The above typical timing data is measured from AX6800x test board. 2. The Trst typical value is measured from AX6800x test board with the internal POR. Figure 4-1: Power-up Sequence Timing Diagram and Table 0V 3.3V Trise3 0V 1.8V Trise2 T23 Tclk Trst VDDK/VDDA_PLL /VDD_FLASH VDDIO/VDDA_USB POR XIN … |
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