Datasheet

Bit 0 – TXB8n Transmit Data Bit 8

TXB8 is the ninth data bit in the character to be transmitted when operating with serial frames with nine

data bits. Must be written before writing the low bits to UDRn.

This bit is reserved in Master SPI Mode (MSPIM).

ATmega328PB

USART - Universal Synchronous Asynchronous R...

Datasheet Complete

DS40001906C-page 286