docs(x230): add soic8 image #107
Conversation
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@jcholsap SOIC 8 pinout should have pin 3 as the write protect pin and pin 7 as the suspend serial input. Do you have the data sheet for the model you used? |
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Why all inputs should be connected: |
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Page 7 notes that #7 is pulled up internally. This was my scenario whereby my replacement Winbond chip needed an external pull up... Well it was already in circuit and I was in a hurry so I just bridged it which is ok for SPI interfaces. |
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Add if you were to bridge #3 to ground, then it is hardwire write protected until you pull it out of circuit. THere could be a use case for that. |
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I'm just trying to be thorough because experience has taught me that it's the 10% less probable events that causes 90% of the confusion. Someone is certainly going to program a chip out of circuit, solder it back in, and then "oh, i've bricked my laptop". When in fact it's just a detail of that particular EEPROM and how the engineers implemented it. And it's always good practice to connect all the pins at all times. It just happens that with these SPI EEPROMs you can strap pins directly to Vcc and/or GND. |
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Given that the goal of skulls is to simplify the coreboot process, I feel like including this information would be confusing and potentially dangerous to newcomers. However that is a decision for @merge to make. |
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Reversing your SOIC clip is dangerous and could melt your EEPROM. |
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as I see this, creating an image in order to improve the docs is one thing/commit - changing the docs and having every pin connected is a different thing/commit/PR. So the PR looks good to me. I'd like to save some of your discussion here for the future though :) thanks. |
The SVG source can be found here