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The A20-SOM204-1G is a System-on-Module (SOM) manufactured by Olimex Ltd. It integrates an Allwinner A20 dual-core Cortex-A7 processor, each core operating at 1 GHz, paired with 1 GB of DDR3 memory. The module includes the AXP209 power management unit and supports up to 64 GB of eMMC flash storage. Key interfaces include two local Ethernet ports, SATA, USB 3.0, USB OTG, VGA, HDMI, and audio I/O. The hardware operates within a commercial temperature range of 0°C to 70°C.
This component belongs to the Olimex SOM family, specifically designed for compact embedded deployments. The A20-SOM204 variant is distinguished by its inclusion of two local Ethernet ports, a feature not present in other A20 modules. The -1G suffix denotes the specific configuration of 1 GB RAM.
Direct replacements must match the 204-pin SO-DIMM form factor and pinout. Alternative modules from the same series may differ in RAM capacity or peripheral availability, such as the presence of additional Ethernet ports or industrial temperature ratings.