![Atmel ATSAM4C-EK User Manual Download Page 26](http://html.mh-extra.com/html/atmel/atsam4c-ek/atsam4c-ek_user-manual_3003465026.webp)
26
ATSAM4C-EK [USER GUIDE]
11251A–ATARM–16-Dec-13
3.14.2 PIO Port B Pin Assignments
Table 3-9.
PIO Port B Pin Assignments
I/O Line
Peripheral
Extra
Function
System
Function
Reset State
Using
A
B
C
PB0
TWD1
–
–
–
TDI
JTAG, I, ST
–
PB1
TWCK1
–
–
RTCOUT0
TDO/TRACESWO
–
PB2
–
–
–
–
TMS/SWDIO
–
PB3
–
–
–
–
TCK/SWCLK
–
PB4
URXD0
TCLK0
A17
–
WKUP8
PIO, I, PU, ST
DBGU
PB5
UTXD0
–
A16
–
–
DBGU
PB6
–
–
D0
SEG24
–
–
PB7
TIOA1
–
D1
SEG25
–
–
PB8
TIOB1
–
D2
SEG26
–
–
PB9
TCLK1
–
D3
SEG27
–
–
PB10
TIOA2
–
D4
SEG28
–
–
PB11
TIOB2
–
D5
SEG29
–
–
PB12
TCLK2
–
D6
SEG30
–
–
PB13
PCK0
–
D7
SEG31/AD3
–
–
PB14
–
–
NWR0–NWE
SEG32
–
–
PB15
–
–
NWR1–NBS1
SEG33
–
ZigBit / SLPTR
PB16
RXD0
–
D8
SEG34
WKUP10
PIO, I, PD, ST
ZigBit / RXD
PB17
TXD0
–
D9
SEG35
–
ZigBit / TXD
PB18
SCK0
PCK2
D10
SEG36
–
ZigBit / RST
PB19
RXD4
–
D11
SEG37
–
ZigBit / MOSI
PB20
TXD4
–
D12
SEG38
–
ZigBit / MISO
PB21
SCK4
NANDOE
D13
SEG39
WKUP11
ZigBit / SPCK
PB22
RTS4
NANDWE
D14
SEG40
–
PIO, I, PD, ST
ZigBit / NPCS
PB23
ADTRG
–
D15
SEG41/AD4
–
–
PB24
TIOA3
–
A7
SEG42
–
–
PB25
TIOB3
–
A6
SEG43
–
–
PB26
TCLK3
–
A5
SEG44
WKUP13
–
PB27
–
–
A4
SEG45
WKUP14
–
PB28
–
–
A3
SEG46
WKUP15
–
PB29
–
–
A2
SEG47
–
–
PB30
–
–
A1
SEG48
–
–
PB31
–
–
A0–NBS0
SEG49/AD5
–
–
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from