Gpio-3 (General Purpose Input/Output) 10Pin Connector; Lcd_Con 40Pin Connector - OLIMEX A20-OLinuXino-MICRO User Manual

OLIMEX© 2013

6.13 GPIO-3 (General Purpose Input/Output) 10pin connector

GPIO-3 connector features the signals of AXP152 on a convenient header. The signals available
might be used to implement power controls on the board – for instance – turning off the device at
specific voltage level or detecting levels.
GPIO pin# Signal name
1 5V
3 3.3V
5 PH0
7 PH2/LED
9 PH7
11 PH9
13 PH10
15 PH11/SDC3-DET# B3*
17 PH12
19 PH13
21 PH14
23 PH15
25 PH16
27 PH17
29 PH18
31 PH19
33 PH20
35 PH21
37 PH22
39 PH23
Signals marked with * are multiplexed with either a peripheral device or another connector. Ensure that the multiplexing is handled
properly on software and/or hardware level (else there would probably occur wrong levels, loss of data, etc).

6.14 LCD_CON 40pin connector

The LCD_CON pins are led out on a separate 40pin connecter for the ease of connecting an LCD.
We have tested the ability of the board to interact with such a display. They allow the user to attach
additional hardware, check readings or perform hardware debug.
Important: you need additional 40PIN ribbon cable to connect an Olimex display and the
LCD_CON.
GPIO-3 connector
Processor pin# GPIO pin#
-
-
A6
C6
B4
D4
A3
C3
A2
B2
A1
B1
C1
C2
D1
D2
D3
E1
E2
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A20-OLinuXino-MICRO user's manual
Signal name
2 GND
4 GND
6 PB3
8 PB4
10 PB5
12 PB6
14 PB7
16 PB8/SATA-PWR-EN
18 PB10
20 PB11
22 PB12
24 PB13
26 PB14
28 PB15
30 PB16
32 PB17
34 PH24
36 PH25
38 PH26
40 PH27
Processor pin#
-
-
B14
A13
B13
A12
B12
A11
C11
C10
C9
B11
A10
B10
A9
B9
E3
E4
F3
F4