STM32F091VCU6TP datasheet(26/128 Pages) STMICROELECTRONICS

26 / 128 page

Functional overview

STM32F091xB STM32F091xC

26/128

DocID026284 Rev 4

3.18

Serial peripheral interface (SPI) / Inter-integrated sound

interface (I2S)

Two SPIs are 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.

Two standard I2S interfaces (multiplexed with SPI1 and SPI2 respectively) supporting four

different audio standards can operate as master or slave at half-duplex communication

mode. 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 an 8-bit programmable linear prescaler. When operating in master

mode, they can output a clock for an external audio component at 256 times the sampling

frequency.

Single-wire half-duplex communication

IrDA SIR ENDEC block

LIN mode

Dual clock domain and wakeup from Stop mode

Receiver timeout interrupt

Modbus communication

Auto baud rate detection

Driver Enable

1. X = supported.

Table 10. STM32F091xB/xC USART implementation (continued)

USART modes/features(1)

USART1

USART2

USART3

USART4

USART5

USART6

USART7

USART8

Table 11. STM32F091xB/xC SPI/I2S implementation

SPI features(1)

1. X = supported.

SPI1 and SPI2

Hardware CRC calculation

Rx/Tx FIFO

NSS pulse mode

I2S mode

TI mode

STM32F091VCU6TP Datasheet(PDF) 26 Page - STMicroelectronics

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