Just wondering when these will be back in stock? I can’t seem to find one anywhere.
Same here
Not that it makes a difference - but there’s more than the 2 of you interested 
It’s been very difficult to find a supply of the desfire ev2/3 8KB chips in bare die format without buying a full wafer of them from NXP (extremely expensive)
3 Likes
Out of genuine curiosity what’s the range a full wafer could cost?
I believe the the desfire comes in 12" wafer and runs about $125,000 or so… after all expenses etc. I honestly can’t remember the exact details though because when they told me the cost my brain CTRL-ALT-DEL itself and I woke up crying?
6 Likes
typically what we do is we try to ride coattails… we ask around to find companies who are planning a card run, which means buying a wafer or two… sometimes more… then we ask if we can just buy a few thousand chips off them. Nobody we’ve talked to is making desfire cards with 8kB and I don’t see the point really in making 2kB desfire implants to be honest.
6 Likes
Any update on this? I was considering this chip mainly for a login application and data sharing. Would the VivoKey Spark2 be a suitable alternative? I can’t find any detailed specification on the VivoKey Spark2 (e.g. the memory / durability compared the desfire).
The Spark2 has no user writable memory, it can only have a link set via the app.
Oh, that explains, thank you. By link, do you mean a URL shareable by NFC? Would there be an alternative that more closely resembles the desfire in that sense?
There is some progress here… we might have a line on some chips. I’m trying to get samples to confirm so we can move forward.
3 Likes
Hi!
Came to the forum to ask this same question.
Are there any updates you can share?
Still nothing specific. Working on sourcing issues still
2 Likes
Any updates?
Eh… not really… might have some options soon but nothing official
3 Likes