OLIMEX© 2015
IMX233-OLinuXino-MINI user's manual
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.
GPIO connector hardware
GPIO
Pin# Signal Name
Processor pin#
GPIO
Pin#
Signal Name
Processor pin#
1
BAT
103
21
PIN8/LCD_D07
9
2
GND
30, 35, 98,
105, 112, 118
22
PIN27/PWM2
91
3
PIN17/LCD_D16
19
23
PIN7/LCD_D06
8
4
PIN18/LCD_D17/LAN_RES
20
24
PIN28/SOFT_SDA
31
5
PIN16/LCD_D15
28
25
PIN6/LCD_D05
7
6
PIN19/LCD_DOTCLK
17
26
PIN29/SOFT_SCL
34
7
PIN15/LCD_D14
29
27
PIN5/LCD_D04
6
8
PIN20/LCD_VSYNC
16
28
PIN30
81
9
PIN14/LCD_D13
26
29
PIN4/LCD_D03
5
10
PIN21/LCD_HSYNC/
I2C_SDA
15
30
PIN31
82
GPIO
Pin# Name
Processor pin#
GPIO
Pin# Name
Processor pin#
11
PIN13/LCD_D12
27
31
PIN3/LCD_D02
4
12
PIN22/LCD_EN/I2C_SCL
11
32
PIN32/LRADC1
107
13
PIN12/LCD_D11/UEXT_CS
25
33
PIN2/LCD_D01
3
14
PIN23/LCD_DISP
12
34
PIN33/LRADC0
108
15
PIN11/LCD_D10
24
35
PIN1/LCD_D00
2
16
PIN24/LCD_WR
13
36
PIN34/MIC
116
17
PIN10/LCD_D09
23
37
+5VUEXT
102
18
PIN25/LCD_RS
14
38
3.3VREG
-
19
PIN9/LCD_D08/
SSP2_MISO
22
39
VIN
-
20
PIN26/LCD_CS
10
40
GND
30, 35, 98,
105, 112, 118
The hardware is associated differently in the Linux following the GPIO naming conventions
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