Datasheet

This bit is reserved in MSPIM.

Bit 1 – U2Xn Double the USART Transmission Speed

This bit only has effect for the asynchronous operation. Write this bit to zero when using synchronous

operation.

Writing this bit to one will reduce the divisor of the baud rate divider from 16 to 8 effectively doubling the

transfer rate for asynchronous communication.

This bit is reserved in MSPIM.

Bit 0 – MPCMn Multi-processor Communication Mode

This bit enables the Multi-processor Communication mode. When the MPCM bit is written to one, all the

incoming frames received by the USART receiver n that do not contain address information will be

ignored. The transmitter is unaffected by the MPCM setting. Refer to Multi-Processor Communication

Mode for details.

This bit is reserved in MSPIM.

ATmega328PB

USART - Universal Synchronous Asynchronous R...

Datasheet Complete

DS40001906C-page 284