Hardware User Guide; Connectors; I/O Extension Headers - Atmel Xplained Pro SAM4L User Manual

4.

Hardware user guide

4.1

Connectors

This chapter describes the implementation of the relevant connectors and headers on SAM4L Xplained Pro
and their connection to the ATSAM4LC4C. The tables of connections in this chapter also describes which sig-
nals are shared between the headers and on-board functionality.
4.1.1

I/O extension headers

The SAM4L Xplained Pro headers EXT1, EXT2, EXT3 and EXT4 offers access to the I/O of the microcontroller
in order to expand the board e.g. by connecting extensions to the board. These headers all comply with the
standard extension header specified in
2.54 mm.
Table 4.1. Extension header EXT1.
Pin on EXT1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Table 4.2. Extension header EXT2.
Pin on EXT2
1
2
3
4
5
6
7
8
Xplained Pro Standard Extension
SAM4L pin Function
- -
- -
PA04 ADCIFE/AD[0]
PA05 ADCIFE/AD[1]
PB12 GPIO
PC02 GPIO
PC00 TC/1/A0
PC01 TC/1/B0
PC25 EIC/EXTINT[2]
PB13 SPI/NPCS[1]
PA23 TWIMS/0/TWD
PA24 TWIMS/0/TWCK
PB00 USART/0/RXD
PB01 USART/0/TXD
PC03 SPI/NPCS[0]
PA22 SPI/MOSI
PA21 SPI/MISO
PC30 SPI/SCK
- -
- -
SAM4L pin Function
- -
- -
PA07 ADCIFE/AD[2]
PB02 ADCIFE/AD[3]
PC08 GPIO
PB10 GPIO
PC04 TC/1/A2
PC05 TC/1/B2
Header. All headers have a pitch of
Shared functionality
Communication line to ID chip on exten-
sion board.
GND
LCD connector (EXT5)
LCD connector (EXT5)
LCD connector (EXT5)
LCD connector (EXT5)
LCD connector (EXT5)
EXT4
EXT4
EXT2 and LCD connector (EXT5)
EXT2 and LCD connector (EXT5)
EXT2 and LCD connector (EXT5)
GND
VCC
Shared functionality
Communication line to ID chip on exten-
sion board.
GND
LCD connector (EXT5)
LCD connector (EXT5)
Atmel SAM4L Xplained Pro [USER GUIDE] 11
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