Max PSRAM and FLASH size for teensy 4.1

The info you gave on that other chip sure looks like a screenshot of Mouser's website. Is it really available from another distributor? I tried a quick search for "APS12808" on Octopart. All results are Mouser and some place called "Extrene Components" which looks like a gray market dealer (no price, must ask for a quote). But if that place really is your solution, they also have 20000 APS6404L-3SQR-ZR.

Of the many possible problems you could seek to solve, I would imagine finding a way to buy those chips from Mouser and then ship to your CM is probably the simplest.
 
BriComp said:
Can't you buy the chips from Mouser then ship them to the PCB factory yourself?
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Yes but that's both a cost and extra logistics. Not ideal and thus why I'm trying to look for other solutions.

PaulStoffregen said:
The info you gave on that other chip sure looks like a screenshot of Mouser's website. Is it really available from another distributor? I tried a quick search for "APS12808" on Octopart. All results are Mouser and some place called "Extrene Components" which looks like a gray market dealer (no price, must ask for a quote). But if that place really is your solution, they also have 20000 APS6404L-3SQR-ZR.

Of the many possible problems you could seek to solve, I would imagine finding a way to buy those chips from Mouser and then ship to your CM is probably the simplest.
Click to expand...

Good to know as a worst case.
I'm working in parallel to try to get Mouser to ship to China. We'll see how that goes.
 
PaulStoffregen said:
The info you gave on that other chip sure looks like a screenshot of Mouser's website. Is it really available from another distributor? I tried a quick search for "APS12808" on Octopart. All results are Mouser and some place called "Extrene Components" which looks like a gray market dealer (no price, must ask for a quote). But if that place really is your solution, they also have 20000 APS6404L-3SQR-ZR.

Of the many possible problems you could seek to solve, I would imagine finding a way to buy those chips from Mouser and then ship to your CM is probably the simplest.
Click to expand...
One thing I noticed when going from 1x 8MByte PSRAM to 2x, is that I could no longer achieve 133MHz speed. I had to go down and the highest I found was 120MHz. It doesn't matter much to me when it comes to that. But one APS12808 is one less component to worry about. And if you could use two (not sure that's possible tho) it would double the size.

I always look for ways to widen my field of view. Find solutions and push the limits of what's possible. That is how my brain is wired.

I'm also working on SDRAM which I've been working on for quite a while. But that's another thread.
 
PaulStoffregen said:
Is this test done on Teensy 4.1 or on your custom PCB?
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Done on my custom board that uses the small PSRAM footprints as the space is limited. At 133MHz FlexSPI with two PSRAMS only 8MByte is registered with the test sketch you made. If I lower to 120MHz then 16MByte shows up.
 
Hello, Some of our customers usually buy the components from Mouser themselves and Mouser ships to us directly.
Is it the restricted supply component?

Linda
 
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