Datasheet

565
32117D–AVR-01/12
AT32UC3C
25.4 I/O Lines Description
Table 25-2. I/O Lines Description
Name Description Type Active Level
CLK 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
Output
RXD
Receive Serial Data
or Master In Slave Out (MISO) in SPI Master Mode
or Master Out Slave In (MOSI) in SPI Slave Mode
Input
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
Input Low
RTS
Request to Send
or Slave Select (NSS) in SPI Master Mode
Output Low