MR25H40

4Mbit (512k x 8) is the largest they offer with SPI.

The larger ones are parallel with a larger form factor.

$17 to $27 Digi-Key depending on speed and temperature rating.

Jim McCullers

WA4CWI

It appears that there are 8Megabyte MRAM chips available at Digikey at about $50.  Everspin is the brand we have been using.  I think they invented the technology.

73,

Burns Fisher, WB1FJ

AMSAT(R) Engineering -- Flight Software