Datasheet

29
42023GS–SAM–03/2014
ATSAM4L8/L4/L2
3.2.2 Peripheral Functions
Each GPIO line can be assigned to one of several peripheral functions. The following table
describes how the various peripheral functions are selected. The last listed function has priority
in case multiple functions are enabled on the same pin.
3.2.3 JTAG Port Connections
If the JTAG is enabled, the JTAG will take control over a number of pins, irrespectively of the I/O
Controller configuration.
44 44 PA24 24 LCDC
S P I
NPCS0
T W I M S 0
TWCK
G L O C
OUT0
S C I F
GCLK IN1
L C D C A
SEG39
C AT B
SENSE18
46 46 PA25 25 VDDIO
U S B C
DM
U S A R T 2
RXD
C AT B
SENSE19
47 47 PA26 26 VDDIO
U S B C
DP
U S A R T 2
TXD
C AT B
SENSE20
25 PA27 27 LCDA
S P I
MISO
I I S C
ISCK
A B D A C B
DAC0
G L O C
IN4
U S A R T 3
RTS
C AT B
SENSE0
26 PA28 28 LCDA
S P I
MOSI
I I S C
ISDI
A B D A C B
DACN0
G L O C
IN5
U S A R T 3
CTS
C AT B
SENSE1
27 PA29 29 LCDA
S P I
SCK
I I S C
IWS
A B D A C B
DAC1
G L O C
IN6
U S A R T 3
CLK
C AT B
SENSE2
30 PA30 30 LCDA
S P I
NPCS0
I I S C
ISDO
A B D A C B
DACN1
G L O C
IN7
U S A R T 3
RXD
C AT B
SENSE3
31 PA31 31 LCDA
S P I
NPCS1
I I S C
IMCK
A B D A C B
CLK
G L O C
OUT1
U S A R T 3
TXD
C AT B
DIS
Table 3-4. 48-pin GPIO Controller Function Multiplexing (Sheet 2 of 2)
ATSAM4LC
ATSAM4LS
Pin
GPIO
Supply
GPIO Functions
ABCDEFG
Table 3-5. Peripheral Functions
Function Description
GPIO Controller Function multiplexing GPIO and GPIO peripheral selection A to H
JTAG port connections JTAG debug port
Oscillators OSC0
Table 3-6. JTAG Pinout
48-pin
Packages
64-pin
QFP/QFN
64-pin
WLSCP
100-pin
QFN
100-ball
VFBGA
Pin
Name
JTAG
Pin
10 10 E2 19 B3 PA03 TMS
43 59 H3 95 D6 PA23 TDO
44 60 G3 96 D10 PA24 TDI
99F218B4TCKTCK