> -----Original Message----- > From: [email protected] > [mailto:[email protected]] > On Behalf Of Bob Paddock > Sent: Sunday, October 18, 2009 7:16 AM > To: [email protected] > Subject: Re: [avr-chat] AVR EEPROM cell: Does 0xff mean it it > is erased? > > > IIRC only Freescale HC12 flash erases to 0. At least thats > the only I have > > encountered. > > Some serial EEPROMs, at least old Xicor ones, erased to 0xFF but as > shipped from the factory they contained a "checker board" > pattern. Looked more > like junk when doing a read, because the rows and columns were > physically different > than what you would logically expect.
Wow. That's a bit strange. > I asked the Xicro factory about that, and they set it was to > expedite their > test times. Ever since I've never made the assumption a new > factory part > comes in the erased state, unless that is explicitly mentioned in the > data sheet, > of any programmable part. Very good point. _______________________________________________ AVR-chat mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/avr-chat
