>He is looking for controllerless flash memory - the >controller adds one more point of failure in a >radiation intense environment. Maybe, see my previous post on this topic and consider the implications of using controller chips that happen to have fine device geometry. I suspect that the problems of radiation erasing the flash device is probably an order of magnitude higher than problems with the controller, but have no figures to back this up. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads