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IMX8ULPCEC Scheda tecnica(PDF) 39 Page - NXP Semiconductors |
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IMX8ULPCEC Scheda tecnica(HTML) 39 Page - NXP Semiconductors |
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39 / 105 page  4.3.2 Power down sequencing As a rule, reverse the order detailed above. Pay attention for the VDD_PTC and VDD_PTD being powered OFF before the VDD18_IOREF_1/2 being powered OFF. 4.4 Requirements for unused interfaces This table shows the required connections for unused interfaces. See i.MX 8ULP Hardware Developers Guide, for details. Table 17. Required connections for unused interfaces Module Supply Name Description Recommendations if module is unused ADC VREFH_ANA18 High Reference supply for ADC 10 kΩ resistor to ground VREFL_ANA Low Reference supply for ADC Must be powered VDD_ANA18 1.8 V supply for ADC Analog and IO segment Must be powered VDD_ANA33 ADC analog and IO 3.3 V or 1.8 V supply input 10 kΩ resistor to ground DAC DAC0_OUT DAC0 output Leave unconnected DAC1_OUT DAC1 output Leave unconnected MIPI DSI VDD_DSI11 MIPI 1.1 V supply Must be powered VDD_DSI18 MIPI 1.8 V supply Must be powered DSI_CLK_N MIPI Negative Clock Signal Leave unconnected DSI_CLK_P MIPI Positive Clock Signal Leave unconnected DSI_DATA0_N MIPI Negative Data0 Signal Leave unconnected DSI_DATA0_P MIPI Positive Data0 Signal Leave unconnected DSI_DATA1_N MIPI Negative Data1 Signal Leave unconnected DSI_DATA1_P MIPI Positive Data1 Signal Leave unconnected DSI_DATA2_N MIPI Negative Data2 Signal Leave unconnected DSI_DATA2_P MIPI Positive Data2 Signal Leave unconnected DSI_DATA3_N MIPI Negative Data3 Signal Leave unconnected DSI_DATA3_P MIPI Positive Data3 Signal Leave unconnected MIPI CSI VDD_CSI11 MIPI 1.1 V supply 10 kΩ resistor to ground VDD_CSI18 MIPI 1.8 V supply 10 kΩ resistor to ground CSI_CLK_N MIPI Negative Clock Signal Leave unconnected CSI_CLK_P MIPI Positive Clock Signal Leave unconnected CSI_DATA0_N MIPI Negative Data0 Signal Leave unconnected CSI_DATA0_P MIPI Positive Data0 Signal Leave unconnected CSI_DATA1_N MIPI Negative Data1 Signal Leave unconnected CSI_DATA1_P MIPI Positive Data1 Signal Leave unconnected Table continues on the next page... NXP Semiconductors System specifications i.MX 8ULP Applications Processor—Commercial Products, Rev. 1, 09/2023 Data Sheet: Technical Data 39 / 105 |
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