User manual

Atmel SAM4S Xplained Pro [USER GUIDE]
Atmel-42075B-MCU-Atmel SAM4S Xplained Pro-USER GUIDE-03/2013
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4. Hardware user guide
4.1 Connectors
This chapter describes the implementation of the relevant connectors and headers on SAM4S Xplained Pro
and their connection to the ATSAM4SD32C. 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 SAM4S Xplained Pro headers EXT1, EXT2 and EXT3 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 Xplained Pro Standard Extension Header. All headers have a pitch of
2.54 mm.
Table 4.1. Extension header EXT1
Pin on EXT1 SAM4S pin Function Shared functionality
1 - - Communication line to ID chip on
extension board.
2 - - GND
3 PA17 AD[0]
4 PA18 AD[1]
5 PA24 GPIO PIOD Interface Header
6 PA25 GPIO PIOD Interface Header
7 PA23 PWMH0 PIOD Interface Header
8 PA19 PWML0
9 PA1 WKUP1/GPIO
10 PA6 GPIO DGI_GPIO0 on EDBG
11 PA3 TWD0 EXT2 and EDBG
12 PA4 TWCK0 EXT2 and EDBG
13 PA21 USART1/RXD1 EXT2
14 PA22 USART1/TXD1 EXT2
15 PA11 SPI/NPCS[0]
16 PA13 SPI/MOSI EXT2, EXT3, LCD connector (EXT4) and
EDBG
17 PA12 SPI/MISO EXT2, EXT3, LCD connector (EXT4) and
EDBG
18 PA14 SPI/SPCK EXT2, EXT3, LCD connector (EXT4) and
EDBG
19 - - GND
20 - - VCC
Table 4.2. Extension header EXT2
Pin on EXT2 SAM4S pin Function Shared functionality
1 - - Communication line to ID chip on
extension board.
2 - - GND
3 PB0 AD[4]
4 PB1 AD[5]
5 PC24 GPIO DGI_GPIO2 on EDBG
6 PC25 GPIO DGI_GPIO3 on EDBG
7 PC19 PWMH1