STM32U595AI datasheet(67/377 Pages) STMICROELECTRONICS

67 / 377 page

DS13633 Rev 1

67/377

STM32U59xxx

Functional overview

automatically switched off after conversion. Data are transfered in SRAM

with DMA.

–

ADC4 interrupts wake up the device from Stop 0, Stop 1 and Stop 2 modes.

•

Analog input channels

–

Up to 19 external analog inputs

–

One channel for the internal temperature sensor (VSENSE)

–

One channel for the internal reference voltage (VREFINT)

–

One channel for the internal digital core voltage (VCORE)

–

One channel for monitoring the external VBAT power supply pin

–

Connection to two DAC internal channels

•

Start-of-conversion can be initiated:

–

By software

–

By hardware triggers with configurable polarity (timer events or GPIO input

events)

•

Conversion modes

–

Conversion of a single channel or scan of a sequence of channels

–

Selected inputs converted once per trigger in Single mode

–

Selected inputs converted continuously in Continuous mode

–

Discontinuous mode

•

Interrupt generation at the end of sampling, end of conversion, end of sequence

conversion, and in case of analog watchdog or overrun events, with wake-up from Stop

capability

•

Analog watchdog

•

Oversampler

–

16-bit data register

–

Oversampling ratio adjustable from 2 to 256

–

Programmable data shift up to 8 bits

•

ADC supply requirements: 1.62 to 3.6 V

•

ADC input range: VSSA <VIN < VREF+

Note:

The ADC4 analog block clock frequency must be between 140 kHz and 55 MHz.

3.31.3

Temperature sensor

The temperature sensor generates a voltage VSENSE that varies linearly with temperature.

The temperature sensor is internally connected to ADC1, ADC2 and ADC4 input channel

that is used to convert the sensor output voltage into a digital value.

The sensor provides good linearity but it must be calibrated to obtain a good accuracy of the

temperature measurement. As the offset of the temperature sensor varies from chip to chip

due to process variation, the uncalibrated internal temperature sensor is suitable for

applications that detect temperature changes only.

To improve the accuracy of the temperature sensor measurement, each device is

individually factory-calibrated by ST. The temperature sensor factory calibration data are

stored by STMicroelectronics in the system memory area, accessible in read-only mode.

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