SAM7S256_14 Datasheet, PDF (362/775 Pages) ATMEL Corporation – ARM-based Flash MCU

Figure 31-4. SAM7S32/16 Application Block Diagram
PPP
Serial
Driver
Field Bus
Driver
EMV
Driver
USART
IrLAP
IrDA
Driver
RS232
Drivers
Serial
Port
RS485
Drivers
Differential
Bus
Smart
Card
Slot
IrDA
Transceivers
31.4 I/O Lines Description
Table 31-1. I/O Line Description
Name
Description
SCK
Serial Clock
TXD
Transmit Serial Data
RXD
RI⁽¹⁾
DSR⁽¹⁾
DCD⁽¹⁾
DTR⁽¹⁾
Receive Serial Data
Ring Indicator
Data Set Ready
Data Carrier Detect
Data Terminal Ready
CTS
Clear to Send
RTS
Request to Send
Note: 1. Does not pertain to SAM7S32/16
Type
I/O
I/O
Input
Input
Input
Input
Output
Input
Output
Active Level
Low
Low
Low
Low
Low
Low
SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
362