STM32F072CB datasheet(26/128 Pages) STMICROELECTRONICS

26 / 128 page

Functional overview

STM32F072x8 STM32F072xB

26/128

DocID025004 Rev 5

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.

3.19

High-definition multimedia interface (HDMI) - consumer

electronics control (CEC)

The device embeds a HDMI-CEC controller that provides hardware support for the

Consumer Electronics Control (CEC) protocol (Supplement 1 to the HDMI standard).

This protocol provides high-level control functions between all audiovisual products in an

environment. It is specified to operate at low speeds with minimum processing and memory

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. STM32F072x8/xB USART implementation (continued)

USART modes/features(1)

USART1 and

USART2

USART3 and

USART4

Table 11. STM32F072x8/xB 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

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