Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller LQFP 64 (10x10) 32-Bit 120 MHz I/O number 47

748

SAM4S Series [DATASHEET]

11100F–ATARM–29-Jan-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

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

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

Input Low

RTS

Request to Send

or Slave Select (NSS) in SPI master mode

Output Low