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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32H753II датащи(PDF) 27 Page - STMicroelectronics |
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STM32H753II датащи(HTML) 27 Page - STMicroelectronics |
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27 / 361 page  DS12117 Rev 8 27/360 STM32H753xI Functional overview 53 Figure 2. Power-up/power-down sequence 1. VDDx refers to any power supply among VDDA, VDD33USB, VDD50USB. 3.5.2 Power supply supervisor The devices have an integrated power-on reset (POR)/ power-down reset (PDR) circuitry coupled with a Brownout reset (BOR) circuitry: • Power-on reset (POR) The POR supervisor monitors VDD power supply and compares it to a fixed threshold. The devices remain in Reset mode when VDD is below this threshold, • Power-down reset (PDR) The PDR supervisor monitors VDD power supply. A reset is generated when VDD drops below a fixed threshold. The PDR supervisor can be enabled/disabled through PDR_ON pin. • Brownout reset (BOR) The BOR supervisor monitors VDD power supply. Three BOR thresholds (from 2.1 to 2.7 V) can be configured through option bytes. A reset is generated when VDD drops below this threshold. MSv47490V1 0.3 1 VBOR0 3.6 Operating mode Power-on Power-down time V VDDX (1) VDD Invalid supply area VDDX < VDD + 300 mV VDDX independent from VDD |
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