STM32F302X8 datasheet(27/139 Pages) STMICROELECTRONICS

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DS9896 Rev 8

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STM32F302x6 STM32F302x8

Functional overview

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

Controller area network (CAN)

The CAN is compliant with specifications 2.0A and B (active) with a bit rate up to 1 Mbit/s. It

can receive and transmit standard frames with 11-bit identifiers as well as extended frames

with 29-bit identifiers. It has three transmit mailboxes, two receive FIFOs with 3 stages and

14 scalable filter banks.

3.21

Universal serial bus (USB)

The STM32F302x6 STM32F302x8 embeds a full-speed USB device peripheral compliant

with the USB specification version 2.0. The USB interface implements a full-speed

(12 Mbit/s) function interface with added support for USB 2.0 Link Power Management. It

has software-configurable endpoint setting with packet memory up-to 1 Kbyte (the last 256

bytes are used for CAN peripheral if enabled) and suspend/resume support. It requires a

precise 48 MHz clock which is generated from the internal main PLL (the clock source must

use an HSE crystal oscillator).

3.22

Touch sensing controller (TSC)

The STM32F302x6/8 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. STM32F302x6/8 SPI/I2S implementation

SPI features(1)

1. X = supported.

SPI2

SPI3

Hardware CRC calculation

Rx/Tx FIFO

NSS pulse mode

I2S mode

TI mode

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