J9 connector

From Low cost, low power, android ARM system board by Mini-Box.com - pico WiKi

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J9 Connector provides SPI port 1, I2C port 1 , serial 2 (UART2) and GPIO

J9 connector schematic:

On J9, you can enable the actions for the HOME, BACK and MENU Android buttons.

- Pin 11 - BACK button,
- Pin 12 - HOME button,
- Pin 13 - MENU button.
- For Ground you can use a single pin. Pin 5 or pin 6.

For using more buttons see: J14 Connector
For information on SPI see: Working with SPI interface