Transmit Data Register High Byte

USART.TXDATAH holds the ninth data bit in the character to be transmitted when operating with serial frames with nine data bits. When used this bit must be written before writing to USART.TXDATAL except if CHSIZE in USART.CTRLC is set to 9BIT Low byte first where USART.TXDATAL should be written first.

This bit is unused in Master SPI mode of operation.

Name:
TXDATAH
Offset:
0x03
Reset:
0x00
Access:
-
Bit76543210
DATA[8]
AccessW
Reset0

Bit 0 – DATA[8]: Transmit Data Register

Transmit Data Register

This bit is used when CHSIZE=9BIT in USART.CTRLC.