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Add unpapulated QSPI RAM footprint #19

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esden opened this issue Nov 5, 2018 · 5 comments
Closed

Add unpapulated QSPI RAM footprint #19

esden opened this issue Nov 5, 2018 · 5 comments
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@esden
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@esden esden commented Nov 5, 2018

To add expanded RAM amount to the iCEBreaker without sacrificing the PMODs we should have an SO8 unpopulated/optional footprint for the LY68L6400.

We can think about a better setup for this in the V2.0 hardware cycle.

@esden esden added this to the V2.0a milestone Nov 5, 2018
@esden esden modified the milestones: V2.0a, V1.0c Nov 5, 2018
@esden esden closed this in c828c31 Nov 18, 2018
@esden
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@esden esden commented Nov 18, 2018

As per @smunaut suggestion. I have added a pad that allows for an easy addition of an SPI RAM chip in SO8 package piggybacked onto the existing flash chip. We can't use ram and flash at the same time but we can use them in the same design by using ~LEDG signal as CS for the RAM. It is good enough for V1.0 ;)

@umarcor
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@umarcor umarcor commented Dec 17, 2020

@esden, I can't identify that pad in the schematics or the figures in the readme. Was it removed in the end?

@umarcor
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@umarcor umarcor commented Dec 17, 2020

@smunaut thanks. I misunderstood the meaning of "piggybacked" and I was looking for an unpopulated footprint at the bottom. All clear now.

@esden
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@esden esden commented Dec 17, 2020

@umarcor Right, it might not be clear for everyone. I am putting a photo of how it comes together for reference.

DSC_2070

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3 participants