OLIMEX© 2018
A20-OLinuXino-MICRO user's manual
The prices for different board versions are also different. These four versions with extra flash
memory are named:
A20-OLinuXino-MICRO-e4GB
,
A20-OLinuXino-MICRO-e4GB-IND,
A20-OLinuXino-MICRO-n4GB
, and
A20-OLinuXino-MICRO-n8GB
. The name consists of the
type of the memory and the size of the memory – suffix “
e4GB
” stands for eMMC type of flash
with 4GB of size; “
n4GB
” stands for NAND type of flash with 4GB of size; “
IND
” stands for a
board with industrial temperature range components.
The other Olimex boards with close characteristics are the ones with A13 and A10 microcontrollers.
The A13 boards feature a generation older processor but since they have been longer on the market
they might have better Linux and Android support. The A10 boards feature single (than A20)
processor core but they are more energy efficient making them better choices for handheld devices
and devices requiring power efficiency. A more powerful chip than the A20 is used in the design of
A64-OLinuXino.
For projects and designs that require smaller form factor good alternatives to A20-OLinuXino-
MICRO are: A20-OLinuXino-LIME2, A20-OLinuXino-LIME, A20-SOM-EVB, A20-SOM204-
EVB. For more powerful and recent designs consider the A64-OLinuXino board.
1.4 Board version used in the manual
Board from revision J was used while writing this document. It is possible that they are outdated so
it is always recommended to download the latest sources from the GitHub page of the board.
1.5 Organization
Each section in this document covers a separate topic, organized as follows:
–
Chapter 1 is an overview of the board usage and features
–
Chapter 2 provides a guide for quickly setting up the board and software notes
–
Chapter 3 contains the general board diagram and layout
–
Chapter 4 describes the component that is the heart of the board: the A20 – Allwinner
processor
–
Chapter 5 is an explanation of the control circuitry associated with the microcontroller
–
Chapter 6 covers the connector pinout, peripherals and jumper description
–
Chapter 7 provides the schematics and the dimensions of the board
–
Chapter 8 contains the revision history, useful links and support information
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