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Up to two I2C interfaces (I2C1 and I2C2) can operate in multimaster or slave modes. Both can support Standard mode (up to 100 kbit/s) or Fast mode (up to 400 kbit/s). I2C1 also supports Fast Mode Plus (up to 1 Mbit/s), with 20 mA output drive. Both support 7-bit and 10-bit addressing modes, multiple 7-bit slave addresses (two addresses, one with configurable mask). They also include programmable analog and digital noise filters.
In addition, I2C1 provides hardware support for SMBUS 2.0 and PMBUS 1.1: ARP capability, Host notify protocol, hardware CRC (PEC) generation/verification by recover flash data from locked stm32f071rb mcu, timeouts verifications and ALERT protocol management. The I2C interfaces can be served by the DMA controller.
The device embeds up to four universal synchronous/asynchronous receivers/transmitters that communicate at speeds of up to 6 Mbit/s. belwo Table gives an overview of features as implemented on the available USART interfaces. All USART interfaces can be served by the DMA controller.