One small correction, Dale: They're EPROM (Windowed and OTP). EEPROM is something else. Douglas Wood Software Engineer dbwood@kc.rr.com ICQ#: 143841506 STFUOLIN Home of the EPICIS Development System for the PIC http://epicis.piclist.com ----- Original Message ----- From: "Dale Botkin" To: Sent: Wednesday, May 28, 2003 8:17 AM Subject: Re: [PIC]: New PIC programmer ... > On Wed, 28 May 2003, Wouter van Ooijen wrote: > > > > I always thought that one could interchange between OTP and flash > > > b'cos it was the same thing but the erasing was different. Am I wrong? > > > > You can mix OTP and JW (windowed) because they are the same chips (just > > different packaging). To my knowledge (TMK?) there are no PIC types that > > are available both as OTP and as flash, so interchange would be limited > > to the compatibility of the two different chips. > > More to the point, you can't erase OTP parts at all... OTP = One Time > Programmable. It's an EPROM part with no window for erasing. > > EEPROM (JW parts): Quartz window, can be erased and re-programmed, just > DON'T SET CODE PROTECTION. Expensive, usually only used for development. > > OTP parts: Same as EEPROM, but all plastic with no window for erasing. > Usually used for production or other "permanent" uses. > > FLASH parts: Can be erased and re-written electrically thousands of times. > Good for dev and production. > > Dale > -- > It's a thankless job, but I've got a lot of Karma to burn off. > Get a PicoKeyer: http://www.hamgadgets.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