OLIMEX© 2012
OLinuXino-MAXI user's manual
UEXT connector
Pin # Signal Name
Processor Pin #
1
+3.3VREG
-
2
GND
30, 35, 98, 105,
112, 118
3
AUART1_TXD
127
4
AUART1_RXD
128
5
I2C_SCL
34(default) OR 11*
6
I2C_SDA
31(default) OR 15*
7
PIN9/LCD_D08/SSP2_MISO
22
8
SSP2_MOSI
21
9
SSP2_SCK
33
10
PIN12/LCD_D11/UEXT_CS
25
The UEXT pinout is also printed at the bottom of the board under the connector.
6.4 GPIO (General Purpose Input/Output) 40pin connector
The GPIO pins are led out on a separate 40pin connecter. They allow the user to attach additional
hardware, check readings or perform hardware debug. The “GPIO Pin#” column shows connector
number and does NOT represent the naming on the bottom of the board.
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