There are now FRAM parts with "unlimited endurance" - greater than 1E16 they say. (http://www.ramtron.com/products/FM18L08productbulletin.htm) That's 10 000 000 000 000 000. Ten quadrillion write or read cycles. Available in a 24C64 compatible chip - http://www.ramtron.com/products/datasheets/FM24CL64ds_r0.3.pdf. Others have 10 - 100 billion read / write cycles. Keep in mind that this is per bit, not per chip. -Randy Glenn Measure twice, cut once, curse, discard. Repeat. ================================================= PICxpert@cogeco.ca - PICxpert@yahoo.com http://picxpert.dyndns.org Not that the site works yet, of course... ================================================= -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Somasundaram Meiyappan Sent: Monday, December 24, 2001 10:12 PM To: PICLIST@MITVMA.MIT.EDU Subject: Re: [PICLIST] [PIC]: PIC speech system (+free software) Hi, If I am not wrong, FRAMs have a strong limitation on the number of memory accesses. This makes them ideal only for storing values that are read rarely (say during system boot-up). There was a very good article in "Embedded Systems Programming" magazine (forgot the date of issue) on the different types of non-volatile memory. Regards, Somasundaram. ----- Original Message ----- From: "Alexandre Domingos F. Souza" To: Sent: Sunday, December 23, 2001 6:11 AM Subject: Re: [PIC]: PIC speech system (+free software) > >the sounds would be handy too. I'm also looking > >for a good PIC friendly static ram, something > >parallel acessed but not too many PIC pins. > >Any ideas on that one? > > Ferroeletric RAMs from Ramtron? > > > ---8<---Corte aqui---8<---- > > Alexandre Souza > taito@terra.com.br > http://planeta.terra.com.br/lazer/pinball/ > > ---8<---Corte aqui---8<---- > > -- > http://www.piclist.com hint: To leave the PICList > mailto:piclist-unsubscribe-request@mitvma.mit.edu > _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics