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STM32L475VC Datasheet(PDF) 38 Page - STMicroelectronics

Part # STM32L475VC
Description  Ultra-low-power ARM Cortex-M4 32-bit MCUFPU, 100DMIPS, up to 1MB Flash, 128 KB SRAM, USB OTG FS, analog, audio
PDF  193 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32L475VC Datasheet(HTML) 38 Page - STMicroelectronics

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Functional overview
STM32L475xx
38/193
DocID027692 Rev 2
•
Noise-wave generation
•
Triangular-wave generation
•
Dual DAC channel independent or simultaneous conversions
•
DMA capability for each channel
•
External triggers for conversion
•
Sample and hold low-power mode, with internal or external capacitor
The DAC channels are triggered through the timer update outputs that are also connected
to different DMA channels.
3.17
Voltage reference buffer (VREFBUF)
The STM32L475xx devices embed an voltage reference buffer which can be used as
voltage reference for ADCs, DACs and also as voltage reference for external components
through the VREF+ pin.
The internal voltage reference buffer supports two voltages:
•
2.048 V
•
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.
Figure 4. Voltage reference buffer
3.18
Comparators (COMP)
The STM32L475xx devices embed two rail-to-rail comparators 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).



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