Atmel SAM4N Xplained Pro, User Manual

Page: 10 / 17

Atmel SAM4N Xplained Pro [USER GUIDE]
42104A-MCU-06/2013
10
Pin on EXT2 SAM4N pin Function Shared functionality
10 PC8 GPIO
11 PB0 TWD2 EDBG
12 PB1 TWCK2 EDBG
13 PA5 RXD0
14 PA6 TXD0
15 PC4 NPCS1
16 PA13 SPI_MOSI EXT1, EXT3
17 PA12 SPI_MISO EXT1, EXT3
18 PA14 SPI_SCK EXT1, EXT3
19 - - GND
20 - - VCC
Table 4-3. Extension header EXT3
Pin on EXT3 SAM4N pin Function Shared functionality
1 - - Communication line to ID chip on
extension board.
2 - - GND
3 PC29 AD13
4 PC30 AD14
5 PC2 GPIO
6 PC3 GPIO
7 PA26 TIOA2
8 PA27 TIOB2
9 PB2 WKUP12
10 PB3 GPIO
11 PA3 TWD0 EXT1
12 PA4 TWCK0 EXT1, SPARE HEADER1
13 PB10 URXD3
14 PB11 UTXD3
15 PC7 NPCS2
16 PA13 SPI_MOSI EXT1, EXT2
17 PA12 SPI_MISO EXT1, EXT2
18 PA14 SPI_SCK EXT1, EXT2
19 - - GND
20 - - VCC
4.1.2 Other headers
In addition to the “I/O extension headers” on page 9 , SAM4N Xplained Pro has two additional headers
with spare signals that offers access to the I/O of the microcontroller which are otherwise not easily available
elsewhere or might be favourable to have collected toghether. All headers have a pitch of 2.54mm.
Table 4-4. SPARE SIGNALS header 1
Pin on header SAM4N pin Function Shared functionality
1 PA4 TWCK0 EXT1, EXT3
2 PA28 TCLK1
3 PA29 TCLK2