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STM32U535NET6QTR Datasheet(PDF) 62 Page - STMicroelectronics

No. de pieza STM32U535NET6QTR
Descripción Electrónicos  Ultra-low-power Arm® Cortex®-M33 MCUTrustZone®FPU,240 DMIPS, up to 512 KB flash memory, 274 KB SRAM
PDF  278 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32U535NET6QTR Datasheet(HTML) 62 Page - STMicroelectronics

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Functional overview
STM32U535xx
62/278
DS14217 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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