Just been to uk.farnell.com to check for serial flash memory and almost all are Awaiting Delivery / Out of Stock / No Longer Manufactured.
Is there something else that is supposed to replace the serial flash or what?
Looks like some big user(s) have ramped up their volume - many of these parts are on factory allocation. Not obsolete - just hard to buy at the moment.
yep - lead times are an order of magnitude worse for some components.
Especially bad for Atmel. But others are easier to get.
For example, plenty of stock for this 1Mbit SPI SOIC-8:
OP: What size and package are you looking for?
16Mbit SOIC-8. Only Atmel (AFAIK) has it in that package. Have no idea why packages of more pins even exist. (there are more *not used* pins than used pins)
Schukat also has ALL Atmel dataflashes on allocation... wierd.
SST (now owned by Microchip) do an SOIC-8 16Mbit and 32Mbit
buy
..
You can extend that to ALL Atmel microcontrollers as well. Blame Apple for hogging all the electronics and Atmel for exiting the fab business.
aleksa wrote: ...
It's the plain size of the chip. To big for SOIC-8...
-- Uwe Bonnes bon@elektron.ikp.physik.tu-darmstadt.de Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt --------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
o buy
s.
9...Now you've got me worried..
I've just learned AT91SAM9260 and... well, Farnell never had it (in TQFP) and Schukat now wants to sell 216 pcs at once. That leaves me with TME only..
As Uwe Bonnes explained the packing issue, I was reading about M25P32.. It is promising, price almost the same, but can't be written on a page basis w/o first erasing a whole sector (!).
of
to buy
nts.
=3D9...
Take it while you can. We got three months of Atmel chips when it was last available. Digikey had 3 to 4 thousands and all gone the next day. Should have gone for six months of supply. We won't design with any more Atmel chip until we have a year of supply.
y of
rd to buy
nents.
q=3D9...
PS: Atmel is turning fabless. Namely, another Maxim.
That's why I used to keep getting the PITA widebody so8 by mistake. (Listed as just "so8" in all the catalogs).
-- John Devereux
XMOS used to specify Atmel flash for use with their devices, their software now supports the Winbond W25X devices. There are plenty of those available.
Farnell doesn't have it, nor TME.. where did you find it?
o buy
s.
9...Great, I am also using AT89C51ED2, and Schukat has zero of them, and Farnell has tripled the price.
What are alternatives? What I need is:
- 64k internal flash, erasable in-application.
- internal eeprom (don't know the size yet, say 512 bytes).
- 1 external INT and 4 I/O pins.
- 3V3
- speed is no issue.
-- Uwe Bonnes bon@elektron.ikp.physik.tu-darmstadt.de Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt --------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
of
to buy
nts.
=3D9...
Currently, I'm looking into Stellaris LM3S800, looks good.
Digi-Key has plenty, I got some a couple of weeks ago.
Leon
Be careful about serial flash, since there are two basic variants.
1) Dataflash: This is the AT45 series 2) SPI Flash: This is the AT25/AT26 series(1) is Atmel only (2) has several sources.
The two variants are not pin compatible They are not command compatible.
The AT45 has small sector size, typically 256+8, 512+15 and 1024+32 bytes per page. The AT45 has internal SRAM buffers, allowing fast byte update.
If you have a small micro with limited SRAM, and you need byte update, then an SPI flash with large sectors is going to be hard to use.
Macronix has something which is pin compatible with AT45, but I think that they are limited to 8 Mbit and the command set is still not compatible with the AT45
I read the other day, that the semiconductor fabs are running at 97-98% of top capacity so shortages will occur.
Best Regards Ulf Samuelsson.
Putting "DF" in the part numbers and "Dataflash" in the names of the AT26 parts was a pretty good joke. ;)
When one reads a datasheet titled
"16-megabit 2.7-volt Only Serial Firmware DataFlash® Memory AT26DF161"
One _might_ be tempted to jump to the conclusion it's a Dataflash part.
--
Grant Edwards grant.b.edwards Yow! Why are these athletic
at shoe salesmen following
gmail.com me??
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