Atmel Xplained Pro Evaluation Kit ATSAMD20-XPRO ATSAMD20-XPRO Data Sheet
Product codes
ATSAMD20-XPRO
419
Atmel | SMART SAM D20 [DATASHEET]
Atmel-42129K–SAM-D20_datasheet–06/2014
26.8.1.8 Data
Name:
DATA
Offset:
0x18
Reset:
0x0000
Property:
Write-Synchronized, Read-Synchronized
z
Bits 15:8 – Reserved
These bits are unused and reserved for future use. For compatibility with future devices, always write these bits to
zero when this register is written. These bits will always return zero when read.
These bits are unused and reserved for future use. For compatibility with future devices, always write these bits to
zero when this register is written. These bits will always return zero when read.
z
Bits 7:0 – DATA[7:0]: Data
The slave data register I/O location (DATA.DATA) provides access to the master transmit and receive data buf-
fers. Reading valid data or writing data to be transmitted can be successfully done only when SCL is held low by
the slave (STATUS.CLKHOLD is set). An exception occurs when reading the last data byte after the stop condition
has been received.
The slave data register I/O location (DATA.DATA) provides access to the master transmit and receive data buf-
fers. Reading valid data or writing data to be transmitted can be successfully done only when SCL is held low by
the slave (STATUS.CLKHOLD is set). An exception occurs when reading the last data byte after the stop condition
has been received.
Accessing DATA.DATA auto-triggers I
2
C bus operations. The operation performed depends on the state of
CTRLB.ACKACT, CTRLB.SMEN and the type of access (read/write).
Writing or reading DATA.DATA when not in smart mode does not require synchronization.
Bit
15
14
13
12
11
10
9
8
Access
R
R
R
R
R
R
R
R
Reset
0
0
0
0
0
0
0
0
Bit
7
6
5
4
3
2
1
0
DATA[7:0]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0