STM32F303VC datasheet(27/148 Pages) STMICROELECTRONICS

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STM32F303xB STM32F303xC

Functional overview

3.22

Serial peripheral interface (SPI)/Inter-integrated sound

interfaces (I2S)

Up to three SPIs are able to communicate up to 18 Mbits/s in slave and master modes in

full-duplex and half-duplex communication modes. The 3-bit prescaler gives 8 master mode

frequencies and the frame size is configurable from 4 bits to 16 bits.

Two standard I2S interfaces (multiplexed with SPI2 and SPI3) supporting four different

audio standards can operate as master or slave at half-duplex and full duplex

communication modes. They can be configured to transfer 16 and 24 or 32 bits with 16-bit

or 32-bit data resolution and synchronized by a specific signal. Audio sampling frequency

from 8 kHz up to 192 kHz can be set by 8-bit programmable linear prescaler. When

operating in master mode it can output a clock for an external audio component at 256 times

the sampling frequency.

Refer to Table 9 for the features available in SPI1, SPI2 and SPI3.

3.23

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.

3.24

Universal serial bus (USB)

The STM32F303xB/STM32F303xC devices embed an USB device peripheral compatible

with the USB full-speed 12 Mbs. The USB interface implements a full-speed (12 Mbit/s)

function interface. It has software-configurable endpoint setting and suspend/resume

support. The dedicated 48 MHz clock is generated from the internal main PLL (the clock

source must use a HSE crystal oscillator). The USB has a dedicated 512-bytes SRAM

memory for data transmission and reception.

Table 9. STM32F303xB/STM32F303xC SPI/I2S implementation

SPI features(1)

1. X = supported.

SPI1

SPI2

SPI3

Hardware CRC calculation

Rx/Tx FIFO

NSS pulse mode

I2S mode

TI mode

XXX

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