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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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USB3503 датащи(PDF) 58 Page - Microchip Technology |
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USB3503 датащи(HTML) 58 Page - Microchip Technology |
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58 / 73 page  USB3503 DS00001584B-page 58 2011-2015 Microchip Technology Inc. 11.0 APPLICATION REFERENCE 11.1 Application Diagram The USB3503 requires several external components to function and insure compliance with the USB 2.0 specification. TABLE 11-1: COMPONENT VALUES IN APPLICATION DIAGRAMS Reference Designator Value Description Notes CVDD12BYP 1.0 μF Capacitor to ground for regulator stability. Place as close to the USB3503 as possible CVDD33BYP 4.7 μF Capacitor to ground for regulator stability. Place as close to the USB3503 as possible COUT 0.1 μF Bypass capacitor to ground. Place as close to the USB3503 as possible RBIAS 12.0k Series resistor to establish reference voltage used by analog circuits. Place as close to the USB3503 as possible RPU1 10k or 1k Pull-up for I2C bus. 10k for 100kHz or 400kHz operation. 1k for 1MHz operation. RPU2 10k (or greater) Pull-up for open-drain outputs TABLE 11-2: CAPACITANCE VALUES AT VBUS OF USB CONNECTOR Port MIN Value MAX Value Downstream 120 μF |
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