OLIMEX© 2015
A20-SOM user's manual
The typical A20-SOM user would not need to edit the files, however.
2.8 Connecting and calibrating a display
One of the ways to interact with the board is via an external display (with or without touchscreen
component). However, there is only a 40-pin female connector LCD_CON with a 0.05'' step.
Unlike other OLIMEX Allwinner boards, the A20-SOM lacks a row of pins that allows the user to
connect a display out-of-the-box. The board's LCD_CON connector is female and has a smaller
0.05'' step. This means that if you use a display made by OLIMEX, you would need additional 2×20
MALE-MALE 0.05'' header to convert the female connector to male. The 0.05'' headers are
somehow hard to find so we sell them here:
0.05'' step connectors
.
Newer displays made by Olimex have both 0.1'' and 0.05'' step connectors. Going for an LCD
output you would also need need a compatible cable to attach the display to the board. The cable is
sold separately.
The displays recommended for the board at the moment of writing might be found in the table
below:
Display name
Size of
display
in inches
Native
resolution
in pixels
Official
Debian image
support
Official
Android image
support
Link to product
page
LCD-OlinuXino-4.3TS
4.3
480×272
Yes
No
Product page
LCD-OLinuXino-7
7
800×480
Yes
Yes
Product page
LCD-OLinuXino-7TS
7
800×480
Yes
Yes
Product page
LCD-OLinuXino-10
10.1
1024×600
Yes
Yes
Product page
LCD-OLinuXino-10TS
10.1
1024×600
Yes
Yes
Product page
LCD-OLinuXino-15.6
15.6
1366×768
Yes
No
Product page
LCD-OlinuXino-15.6FHD
15.6
1920×1080 Yes
No
Product page
The displays whose names contain “TS” - include a resistive touch screen component.
The cable used for connection depends on the specific board you are using and more specifically it
depends on the pitch of the LCD connector of the board. We have two cables – both 40-pins ones
but one for the bigger pitch (0.1'') and the other for the smaller one (0.05''). Each of the displays
listed in the table above has two connectors suitable for both cables:
CABLE-IDC40-15cm – 15cm long cable suitable for 0.1'' step connectors –
Product page
CABLE-40-40-10CM – 10cm long cable suitable for 0.05'' step connectors –
Product page
Page 15 of 41
