Hardware User Guide; Connectors; I/O Extension Headers - Atmel SAM4L8 Xplained Pro User Manual

4.

Hardware user guide

4.1

Connectors

This chapter describes the implementation of the relevant connectors and headers on SAM4L8 Xplained Pro
and their connection to the ATSAM4LC8CA. The tables of connections in this chapter also describes which
signals are shared between the headers and on-board functionality.
4.1.1

I/O extension headers

The SAM4L8 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
have a pitch of 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
SAM4L8 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
- -
- -
SAM4L8 pin Function
- -
- -
PA07 ADCIFE/AD[2]
PB02 ADCIFE/AD[3]
PC08 GPIO
PB10 GPIO
PC04 TC/1/A2
PC05 TC/1/B2
Xplained Pro Standard Extension
Shared functionality
Communication line to ID chip on
extension 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
extension board.
GND
LCD connector (EXT5)
LCD connector (EXT5)
Atmel SAM4L8 Xplained Pro [USER GUIDE]
Header. All headers
11
42103A-MCU-06/2013