On Mon, Feb 06, 2006 at 10:41:02PM -0800, Adam Talbot wrote: > Fun easy question. > Messing about with my new board, and have an easy question. So I have > both the SST 39SF020 and the 39SF040 flash chip. My payload is just > filo; so I can fit Linuxbios on the 256Kb or the 512Kb flash chip. Is > there any reason to use the 512Kb? > Faster, slower, any thing else like that?
It depends on the second line of numbers on the package. SST 39SF0x0(A) is on the first line 45-4C-NH(E) or something similar is on the second line 45/70 is read access speed in ns 4 is minimum life in write cycles C is temperature range (Commercial 0c->70c or Industrial -40c->85c) N is PLCC H is 32 leads E is lead-free Page 20 of http://www.sst.com/downloads/datasheet/S71147.pdf But, I doubt you would even be able to measure difference in speed between 45 and 70 ns versions. :) //Peter -- linuxbios mailing list [email protected] http://www.openbios.org/mailman/listinfo/linuxbios
