Quote:
Originally Posted by ottischwenk
Really?Really?
Silicon foundry makes the flash chip and sells it to package manufacturer who wraps it in plastic and metal and sells to Kindle ereader assembler.
And because much smaller quantities are produced, it is much more expensive than the SD solution
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He's comparing a commercially available card vs a discrete IC chip.
This:
https://www.amazon.com/SanDisk-Ultra...02117706&psc=1
Versus something like this:
https://benselectronics.nl/uln-2003-uln2003-ic/
Bare ICs are a lot cheaper than memory cards which is why practically everybody doing readers uses ICs.
The one time a flash card might be cheaper than an industrial IC is if they are from a rejected lot. But I wouldn't accuse Kobo of that. (Mind you, a lot of samples from a rejected lot are fine but are suspect of failing under stress. It isn't good practice to foist rejects like those on customers.)
Most likely the board uses flash cards (and takes the got from the internal connector cost) to be used in different models with different capacities, often with different names.