STM32WB10CC datasheet(37/110 Pages) STMICROELECTRONICS

37 / 110 page

DS13259 Rev 2

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STM32WB10CC

Functional overview

3.14.2

Internal voltage reference (VREFINT)

The internal voltage reference (VREFINT) provides a stable (bandgap) voltage output for

the ADC. VREFINT is internally connected to the ADC1_IN13 input channel. The precise

voltage of VREFINT is individually measured for each part by ST during production test and

stored in the system memory area. It is accessible in read-only mode.

3.15

Touch sensing controller (TSC)

The touch sensing controller provides a simple solution for adding capacitive sensing

functionality to any application. Capacitive sensing technology is able to detect finger

presence near an electrode which is protected from direct touch by a dielectric such as

glass or plastic. The capacitive variation introduced by the finger (or any conductive object)

is measured using a proven implementation based on a surface charge transfer acquisition

principle.

The touch sensing controller is fully supported by the STMTouch touch sensing firmware

library (free to use) and enables reliable touch sensing functionality in the end application.

Table 9. Temperature sensor calibration values

Calibration value name

Description

Memory address

TS_CAL1

TS ADC raw data acquired at a

temperature of 30 °C (± 5 °C),

VDDA = 3.0 V (± 10 mV)

0x1FFF 75A8 - 0x1FFF 75A9

TS_CAL2

TS ADC raw data acquired at a

temperature of 130 °C (± 5 °C),

VDDA = 3.0 V (± 10 mV)

0x1FFF 75CA - 0x1FFF 75CB

Table 10. Internal voltage reference calibration values

Calibration value name

Description

Memory address

VREFINT

Raw data acquired at a

temperature of 30 °C (± 5 °C),

VDDA = 3.6 V (± 10 mV)

0x1FFF 75AA - 0x1FFF 75AB

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