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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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STM32U545NET6QTR Datenblatt(PDF) 62 Page - STMicroelectronics |
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STM32U545NET6QTR Datenblatt(HTML) 62 Page - STMicroelectronics |
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62 / 283 page  Functional overview STM32U545xx 62/283 DS14216 Rev 1 3.27 Voltage reference buffer (VREFBUF) The devices embed a voltage reference buffer that can be used as voltage reference for ADCs, DACs and also as voltage reference for external components through the VREF+ pin. Figure 6. VREFBUF block diagram The internal voltage reference buffer supports four voltages: 1.5 V, 1.8 V, 2.048 V and 2.5 V. An external voltage reference can be provided through the VREF+ pin when the internal voltage reference buffer is off. The VREF+ pin is double-bonded with VDDA on some packages. In these packages the internal voltage reference buffer is not available. 3.28 Comparator (COMP) The devices embed one rail-to-rail comparator with programmable reference voltage (internal or external), hysteresis and speed (low speed for low power) and with selectable output polarity. The reference voltage can be one of the following: • External I/O • DAC output channels • Internal reference voltage or submultiple (1/4, 1/2, 3/4) The comparator can wake up from Stop 0, Stop 1 and Stop 2 modes, generate interrupts and breaks for the timers. MSv64430V2 + - VREFINT VREF+ VSSA |
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