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数据搜索系统，热门电子元器件搜索 |
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STM32F769AI 数据表(PDF) 28 Page - STMicroelectronics |
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STM32F769AI 数据表(HTML) 28 Page - STMicroelectronics |
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28 / 255 page  Functional overview STM32F765xx STM32F767xx STM32F768Ax STM32F769xx 28/255 DocID029041 Rev 4 disappear. The following conditions VDDUSB must be respected: – During the power-on phase (VDD < VDD_MIN), VDDUSB should be always lower than VDD – During the power-down phase (VDD < VDD_MIN), VDDUSB should be always lower than VDD – The VDDUSB rising and falling time rate specifications must be respected (see Table 20 and Table 21) – In operating mode phase, VDDUSB could be lower or higher than VDD: - If USB (USB OTG_HS/OTG_FS) is used, the associated GPIOs powered by VDDUSB are operating between VDDUSB_MIN and VDDUSB_MAX. - The VDDUSB supply both USB transceiver (USB OTG_HS and USB OTG_FS). If only one USB transceiver is used in the application, the GPIOs associated to the other USB transceiver are still supplied by VDDUSB. - If USB (USB OTG_HS/OTG_FS) is not used, the associated GPIOs powered by VDDUSB are operating between VDD_MIN and VDD_MAX. Figure 4. VDDUSB connected to VDD power supply |
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