Socket Type I

I2C interface. Pins 8 and 9 are the dedicated I2C data (SDA) and clock (SCL) lines. Note that a mainboard should include pull-up resistors for these pins, in the region of 2.2K Ohms. Modules must not include their own pull-ups on these lines. In addition, pins 3 and 6 are general-purpose input/outputs, with pin 3 supporting interrupt capabilities.

Pinout

Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9 Pin 10
+3.3V +5V GPIO! [UN] [UN] GPIO [UN] SDA SCL GND


Legend:

GPIO

A general-purpose digital input/output pin, operating at 3.3 Volts.

! Interrupt-capable and software pull-up capable GPIO (the pull-up is switchable and in the range of 10,000 to 100,000 ohms).

[UN]

Modules must not connect to this pin if using this socket type. Mainboards can support multiple socket types on one socket, as long as individual pin functionalities overlap in a compatible manner, so that a pin from one socket type can overlap with a [UN] pin of another.

+3.3V Connection to the +3.3V power net.
+5V Connection to the +5V power net.
GND Connection the power ground net.

Connector Pin Numbering

Pins numbers for the male 10-pin connector standard Gadgeteer socket, as seen from above. In most cases, the ribbon cables will have the pin 1 conductor marked in red.

ConnectorPinNumbering_thumb_thumb

Last edited Nov 10, 2011 at 3:38 PM by nvillar, version 2

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