Pins must be unconnected? in manaul

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On page 7 of the G120 maual, it mentions that pins with no name,function or label should be unconnected? Does this mean pins 43,44 and 33,34,35…?

Are pins 33,34…etc general GPIO or ?

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anthonys,

From experience I can tell you that we use all of those pins with no issue, and consider them a GPIO. If they are on ports P0, or P2, those will even support interrupts.

I just posted about my first G120 based product and we use all but 4-5 pins on the board and have not issue.

See this post for the board: https://www.ghielectronics.com/community/forum/topic?id=22966

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I mean to attach the G120 pinout I use, see if this helps

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Please keep in mind that if we use those pins for something in the future, you may have issues with designs that are using them.

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Thanks for the clarification Gary.

Maybe those should be marked “reserved” or something similar, as we use all of them, and that would be an issue in our design that I just posted about today.

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Kind of missleading then in the documentation as it states there are 72 GPIO available.

Based on your note about not using the ones with empty notes, for the G120 I counted 63 that are free to use and 9 that are empty making a total of 72 so in reality, the documentation should state that there are 63 available. Bit of a waste of pins if we can’t use the others?

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@ anthonys - Pins 33, 34, and 35 are available to use. They all have names of “P1.14”, “P1.17”, and “P1.16” respectively. Pins 43 and 44 and reserved for future use.