Atmel SMART SAM4C Series User Manual page 24

3.14 PIO Usage
3.14.1 PIO Port A Pin Assignments
Table 3-8. PIO Port A Pin Assignments
I/O Line A
PA0 RTS3
PA1 CTS3
PA2 SCK3
PA3 RXD3
PA4 TXD3
PA5 SPI0_NPCS0
PA6 SPI0_MISO
PA7 SPI0_MOSI
PA8 SPI0_SPCK
PA9 RXD2
PA10 TXD2
PA11 RXD1
PA12 TXD1
PA13 SCK2
PA14 RTS2
PA15 CTS2
PA16 SCK1
PA17 RTS1
PA18 CTS1
PA19 RTS0
PA20 CTS0
PA21 SPI0_NPCS1
PA22 SPI0_NPCS2
PA23 SPI0_NPCS3
PA24 TWD0
PA25 TWCK0
PA26 CTS4
PA27 –
PA28 –
PA29 PCK1
PA30 PCK1
PA31 PCK0
Peripheral
B C
PCK2 A10
NCS1 A9
NCS2 A8
NCS3 A7
– A6
– A5
– A4
– A3
– A2
– A1
– A0/NBS0
– A23
– A22-NCLE
TIOA0 A21-NALE
TIOB0 A20
TIOA4 A19
TIOB4 A18
TCLK4 A17
TIOA5 A16
TCLK5 A15
TIOB5 A14
– A13
– A12
– A11
– A10
– A9
– A8
– NCS0
– NRD
– NWAIT
– A15
– A14
Extra System
Function Function
COM0 WKUP5
COM1 –
COM2 –
COM3 WKUP6
COM4/AD1 –
COM5/AD2 –
SEG0 –
SEG1 –
SEG2 –
SEG3 WKUP2
SEG4 –
SEG5 WKUP9
SEG6/AD0 –
SEG7 –
SEG8 WKUP3
SEG9 –
SEG10 –
SEG11 WKUP7
SEG12 –
SEG13 WKUP4
SEG14 –
SEG15 –
SEG16 –
SEG17 –
SEG18 WKUP1
SEG19 –
SEG20 –
SEG21 –
SEG22 –
SEG23 –
– XOUT
– XIN
SAM4C32-EK [USER GUIDE]
Atmel-11253A-ATARM-SAM4C32-EK-UserGuide_17-Sep-14
Reset State Using
LCD Com
LCD Com
LCD Com
LCD Com
Analog input
SerFlash / NPCS
ZigBee
ZigBee
ZigBee
RS232/485
RS232/485
ZigBee / IRQ0
ZigBee/IRQ1/IRTC
Backlight On/off
PIO, I, PU, ST RS232/485
RS232/485
MuxLCD
ZigBee / RST
ZigBee / SLPTR
PB ScrUp
PB ScrDwn
ZigBee / NPCS
ZigBit / IRQ
–
TWI / ZigBit
TWI / ZigBit
–
–
–
– MCLK (ATSense)
XOUT –
XIN –
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