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The A20-SOM204-1G-M is a System-on-Module (SOM) manufactured by Olimex Ltd. It integrates an Allwinner A20 dual-core Cortex-A7 processor with a base clock speed of 1 GHz. The module includes 1 GB of DDR3 memory and features two local Ethernet ports, indicated by the 'M' suffix for additional Mega Ethernet capability. It utilizes a 204-pin SO-DIMM form factor with dimensions of 67 x 84 x 5 mm. The standard operating temperature range is 0°C to +70°C.
This module belongs to the A20-SOM204 family from Olimex. The specific suffix '1G-M' denotes 1GB RAM and the inclusion of extra Mega Ethernet functionality compared to standard variants. Reference designs including Eagle CAD files are available for CAN, SATA, PCIe, USB, VGA, HDMI, and audio interfaces.
The industrial temperature variant is designated as A20-SOM204-1G-M-I, supporting -25°C to +85°C. Other configurations in the series vary by eMMC capacity (e.g., e16G, e64G) and presence of encryption engines (-C option).