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SparkFun Electronics will be closed on July 3rd, 2015 in observance of Independence Day. Any orders placed after 2:00pm MT on July 2nd will be shipped out after the weekend. Thanks!

MikeNik

Member Since: August 16, 2011

Country: United States

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Systems Engineer

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C C++ Others

Expertise

Systems Performance

  • The A20 has a RTC that uses a 30 bit counter to count elapsed time in YY-MM-DD and HH-MM-SS. It continues to operate via battery backup when the system is powered off. The RTC has an independent power pin (RTCVDD)(A20-Pin K8) which is connected to the AXP209 PMU(pin 28) on the pcDuino3. In the power-down mode this pin should continue to have power if a battery is connected to J7. (I have not verified that the PMU is programmed as such, but the capability is there).

  • According to the Allwinner A20 User manual.. LINK: http://dl.linux-sunxi.org/A20/A20%20User%20Manual%202013-03-22.pdf “Support SATA 1.5Gbs and SATA 3.0Gb/s” “Comply with SATA spec 2.6”

No public wish lists :(