# SparkFun Qwiic GPIO

**URL:** <https://community.sparkfun.com/t/sparkfun-qwiic-gpio/47568>\
**Category:** Qwiic System\
**Tags:** qwiic\
**Created:** [June 12, 2024, 3:41pm UTC](https://community.sparkfun.com/t/sparkfun-qwiic-gpio/47568 "2024-06-12T15:41:02Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![k123456](https://avatars.discourse-cdn.com/v4/letter/k/6a8cbe/32.png) [@k123456](https://community.sparkfun.com/u/k123456)\
**Post date:** [June 12, 2024, 3:41pm UTC](https://community.sparkfun.com/t/sparkfun-qwiic-gpio/47568/1 "2024-06-12T15:41:02Z")

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Can the SparkFun Qwiic GPIO be connected to the SparkFun Qwiic Mux Breakout - 8 Channel (TCA9548A)? Also the documentation for the Qwiic GPIO states it can expand up to 8 pins, but it seems like there are 16 ports on the board – so can it be expanded up to 16 pins?

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<div class="post-metadata">

**Author:** ![TS-Russell](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/ts-russell/32/6092_2.png) [@TS-Russell](https://community.sparkfun.com/u/TS-Russell)\
**Post date:** [June 12, 2024, 6:32pm UTC](https://community.sparkfun.com/t/sparkfun-qwiic-gpio/47568/2 "2024-06-12T18:32:23Z")

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Yes…though note that it might not require one [https://learn.sparkfun.com/tutorials/sp … e-overview](https://learn.sparkfun.com/tutorials/sparkfun-qwiic-gpio-hookup-guide#hardware-overview) (you can have up to 8 selectable addresses on one bus for the Qwiic GPIO)

No - see [https://cdn.sparkfun.com/assets/2/e/4/6 … ematic.pdf](https://cdn.sparkfun.com/assets/2/e/4/6/c/SparkFun_Qwiic_GPIO_Schematic.pdf)

Each of the 4x4 latch terminal blocks carry 3v3, 2 GPIO, and a GND…so 8 GPIO per unit