Need a replacement for 4MB serial flash from ATMEL
These days I cant find 4M on distributor stock, replace by 8M model, same
family and works ok.
> -----Original Message-----
> From: l... [mailto:l...] On Behalf
> Sent: quinta-feira, 14 de outubro de 2010 08:50
> To: l...
> Subject: [lpc2000] Need a replacement for 4MB serial flash from ATMEL
> Hi to all,
> We are facing an issue nothing technical but affecting the development
task. That is
> we have two serial Flashes on our product interfaced using SPI and SSP,
one is used
> to store the firmware using file system another stores a raw memory which
> user settings and some editable data.
> Then we have another SD card to store firmware using file system as an
> We are not able to produce no of boards as many as we want because ATMEL
> SF is under huge demand from many places. we are one of them.
> We found a 4MB SF, that was SST. but writing in that flash needs the chip
> erase state, means cant edit the page without erasing that particular
> So is there any alternative to get rid of ATMEL and use that as permanent
> and PCB's are made so pin compatibility also as big issue.
> Another doubt is that can we create partial filesystem on SD card and can
> remaining memory be used as a raw memory?
> So that i can store my firmware using file system and i can use that file
> some other purpose also.
> And in raw memory i can write my data without much worry...
> Can anyone please give some clue to come out of this issue?
[mailto:l...] On Behalf Of Marcelo
Richter Sent: 19 October 2010 20:42 To:
l... Subject: RE: [lpc2000] Need a
replacement for 4MB serial flash from ATMEL
> You cant use a larger size from same family?
> These days I cant find 4M on distributor stock, replace
> by 8M model, same
> family and works ok.
You can't get anything out of Atmel at the moment - and the 8M chip is not pin compatible with the 4M for some reason