STM32F031C4(2015) View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STM32F031C4
(Rev.:2015)

ARM®-based 32-bit MCU with up to 32 Kbyte Flash, 9 timers, ADC and communication interfaces, 2.0 - 3.6 V

STMicroelectronics 

Functional overview

STM32F031x4 STM32F031x6

3.15

Serial peripheral interface (SPI) / Inter-integrated sound

interface (I2S)

The SPI is able to communicate up to 18 Mbit/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.

One standard I2S interface (multiplexed with SPI1) supporting four different audio standards

can operate as master or slave at half-duplex communication mode. It 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 an 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.

Table 9. STM32F031x4/x6 SPI/I2S implementation

SPI features(1)

SPI

Hardware CRC calculation

X

Rx/Tx FIFO

X

NSS pulse mode

X

I2S mode

X

TI mode

X

1. X = supported.

3.16

Serial wire debug port (SW-DP)

An ARM SW-DP interface is provided to allow a serial wire debugging tool to be connected

to the MCU.

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DocID025743 Rev 4

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