Power Jumper; Address Jumpers; Board Dimensions - sparkfun Qwiic GPIO Hook-Up Manual

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I C Jumper
This jumper ties the SDA and SCL lines to 3.3V via two 4.7kΩ resistors. The default state is closed. To disable the
pull-up resistors, simply sever the traces in between the pads to open the jumper. If you have multiple Qwiic
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GPIO's or other I C devices on the same bus, disable all but one pair of pull-up resistors to avoid creating too
strong of a resistance on the SDA and SCL lines.

Power Jumper

This jumper controls voltage to the power LED on the board. It ties the anode of the power LED to 3.3V via a 1kΩ
resistor. The default state is closed. To disable the power LED, open the jumper by severing the trace between the
two pads. Disabling the power LED will help reduce overall current consumption of the board.
Interrupt Jumper
This jumper ties the TCA9534's interrupt pin to 3.3V via a 10kΩ resistor and its default state is closed. This holds
the Interrupt pin HIGH so it can be driven LOW when an interrupt event is monitored by the TCA9534. Open the
jumper if you have another pullup on the Interrupt pin.

Address Jumpers

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The three address jumpers on the Qwiic GPIO: ADR0, ADR1 and ADR2, set the I C address of the TCA9534 by
pulling them either to 3.3V or 0V/Ground. The default state of all three jumpers is closed and they tie each
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address pin to 3.3V via a 2.2kΩ resistor. This configuration sets the default I C address to 0x27. By opening or
closing these jumpers you can alter the address of the TCA9534 so you can have up to eight of these boards on a
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single I C bus. Click the button to open the table below showing the various jumper configurations and what I C
address each configuration sets:
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CLICK HERE TO OPEN THE I C ADDRESS TABLE

Board Dimensions

The Qwiic GPIO is a bit larger than our standard Qwiic breakout size (1" x 1"). It measures in at 2.40" x 1.50"
(60.96mm x 38.10mm) and has four mounting holes that fit a 4-40 screw.