Olimex Open Source Hardware Embedded ARM Linux Single board computer with dual core, dual GPU ALLWINNER A20 CORTEX-A7 with addi A20-OLINUXINO-MICRO-4GB 数据表
产品代码
A20-OLINUXINO-MICRO-4GB
OLIMEX© 2013
A20-OLinuXino-MICRO user's manual
SD/MMC card connector
Pin # Connector signal name
Wire name (processor pin)
1 CD/DAT3/CS
SDC3-D3 (B16)
2 CMD/DI
SDC3-CMD (A18)
3 VSS1
-
4 VDD
-
5 CLK/SCLK
SDC3-CLK (B18)
6 VSS2
-
7 DAT0/DO
SDC1-D0 (A17)
8 DAT1/RES
SDC1-D1 (B17)
9 DAT2/RES
SDC1-D2 (A16)
Additionally, there are the WP and CP switches that are responsible, respectively, for sensing
whether the card is locked for reading and whether there is a card inserted.
whether the card is locked for reading and whether there is a card inserted.
6.3 PWR jack
The power jack used is the typical 2.5mm one used by Olimex in most of our products. You should
provide 6 to 16 volts direct current and the required current may vary depending on the peripherals
connected to the board. The power supply you use should be capable of providing at least 500mA of
current.
provide 6 to 16 volts direct current and the required current may vary depending on the peripherals
connected to the board. The power supply you use should be capable of providing at least 500mA of
current.
Pin #
Signal name
1
Power input
2
GND
More info about the power supply can be found in chapter 5 of this manual.
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