STM32F301C6 datasheet(28/135 Pages) STMICROELECTRONICS

28 / 135 page

Functional overview

STM32F301x6 STM32F301x8

28/135

DocID025146 Rev 6

mode, the master clock can be output to the external DAC/CODEC at 256 times the

sampling frequency.

Refer to Table 9 for the features available in SPI2 and SPI3.

3.20

Touch sensing controller (TSC)

The STM32F301x6/8 devices provide a simple solution for adding capacitive sensing

functionality to any application. These devices offer up to 18 capacitive sensing channels

distributed over 6 analog I/O groups.

Capacitive sensing technology is able to detect the presence of a finger near a sensor which

is protected from direct touch by a dielectric (for example glass, 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. It consists of

charging the sensor capacitance and then transferring a part of the accumulated charges

into a sampling capacitor until the voltage across this capacitor has reached a specific

threshold. To limit the CPU bandwidth usage this acquisition is directly managed by the

hardware touch sensing controller and only requires few external components to operate.

Table 9. STM32F301x6/8 SPI/I2S implementation

SPI features(1)

1. X = supported.

SPI2

SPI3

Hardware CRC calculation

Rx/Tx FIFO

NSS pulse mode

I2S mode

TI mode

STM32F301C6 Fiches technique(PDF) 28 Page - STMicroelectronics