Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet
Product codes
ATSAM4S-WPIR-RD
759
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
36.5
I/O Lines Description
Table 36-2.
I/O Line Description
Name
Description
Type
Active Level
SCK
Serial Clock
I/O
—
TXD
Transmit Serial Data
or Master Out Slave In (MOSI) in SPI master mode
or Master In Slave Out (MISO) in SPI slave mode
or Master Out Slave In (MOSI) in SPI master mode
or Master In Slave Out (MISO) in SPI slave mode
I/O
—
RXD
Receive Serial Data
or Master In Slave Out (MISO) in SPI master mode
or Master Out Slave In (MOSI) in SPI slave mode
or Master In Slave Out (MISO) in SPI master mode
or Master Out Slave In (MOSI) in SPI slave mode
I/O
—
RI
Ring Indicator
Input
Low
DSR
Data Set Ready
Input
Low
DCD
Data Carrier Detect
Input
Low
DTR
Data Terminal Ready
Output
Low
CTS
Clear to Send
or Slave Select (NSS) in SPI slave mode
or Slave Select (NSS) in SPI slave mode
Input
Low
RTS
Request to Send
or Slave Select (NSS) in SPI master mode
or Slave Select (NSS) in SPI master mode
Output
Low