4.9.8.3.5 SPDR – SPI Data Register

Name:	SPDR
Offset:	0x02E
Reset:	0x00


Bit	7	6	5	4	3	2	1	0
	SPDR[7:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	x	x	x	x	x	x	x	x

Bits 7:0 – SPDR[7:0] SPI Data Register

The SPI data register is a read/write register used for data transfer between the register file and the SPI transmit and receive buffer. Writing to the register puts data into the transmit buffer and initiates data transmission. Reading the register causes the receive buffer to be read. The fill levels in SFFR are automatically incremented or decremented, respectively.