Datasheet

This bit is reserved in MSPIM.

Bit 1 – U2X0 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 – MPCM0 Multi-processor Communication Mode

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

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

The transmitter is unaffected by the MPCM0 setting. Refer to 24.10 Multi-Processor Communication

Mode for details.

This bit is reserved in MSPIM.

ATmega48PA/88PA/168PA

Universal Synchronous Asynchronous Receiver ...

Datasheet Complete

DS40002011A-page 258