Post by thread:-ME chips

Hi Folks, I would like to ask a little ( or great) help. I would like to know about the 84,62,71 -ME chips. They are 28 pins chips and they are in a downloader. I asked the Microchip a few month ago but they doesn't answer yet. I suppose they are looking for the answer. I think these chips can run the program from a RAM. Thanks George

George Varga wrote: > I would like to know about the 84,62,71 -ME chips. George, I am assuming that the chips that you are talking about are the Microchip 16C84, 16C62, and the 16C71, although they are not all 28-pin chips. The 16C71 is a 28-pin DIP micro with internal A2D conversion. Look here for the 16C71: http://www.microchip.com/Download/Lit/PICmicro/16C71X/30272a.pdf nearly 2Mb. The 16C84 is an 18-pin DIP micro with internal EEPROM. Look here for the 16C84: http://www.microchip.com/Download/Lit/PICmicro/16F8X/30445c.pdf about 1.1Mb. The 16C62 is an 28-pin DIP micro with 22 I/O pins. Look here for the 16C62: http://www.microchip.com/Download/Lit/PICmicro/16C6X/30234d.pdf about 3.6Mb! Good luck! Michael ************************************************************************* When the way of the Tao is forgotten, kindness and ethics must be taught. Men must learn to pretend to be wise and good. -- Lao Tzu *************************************************************************

At 08:14 PM 8/14/98 MET, you wrote: >Hi Folks, > >I would like to ask a little ( or great) help. >I would like to know about the 84,62,71 -ME chips. >They are 28 pins chips and they are in a downloader. >I asked the Microchip a few month ago but they doesn't answer yet. >I suppose they are looking for the answer. >I think these chips can run the program from a RAM. > > Thanks George > > Hi George, These parts are the bond-out versions of the 84,62,71 or whatever. The idea is to bring out internal signals for an In Circuit Emulator or whatever. Otherwise the chips are the same as the "real" parts. The obvious signals to bring out would be address and data busses for the internal program memory so that you could put some external ram for the program memory. I suspect that data sheets are around somewhere, although I haven't seen any. It's the sort of information you would really only need if you are planning to build an ICE or soemthing similiar. Ray Gardiner spam_OUTrayTakeThisOuThdc.com.au

Hi, I assume George did not meant you assume. The downloader runs a PIC program, but for being able to do it correctly for a particular chip it needs that -ME chips. It is an extension for the downloader. I think the stuff is not public. Imre On Fri, 14 Aug 1998, Mike Ghormley wrote: {Quote hidden}> George Varga wrote: > > > I would like to know about the 84,62,71 -ME chips. > > George, > > I am assuming that the chips that you are talking about are the > Microchip 16C84, 16C62, and the 16C71, although they are not all 28-pin > chips. > > The 16C71 is a 28-pin DIP micro with internal A2D conversion. Look here > for the 16C71: > > http://www.microchip.com/Download/Lit/PICmicro/16C71X/30272a.pdf > > nearly 2Mb. > > The 16C84 is an 18-pin DIP micro with internal EEPROM. Look here for > the 16C84: > > http://www.microchip.com/Download/Lit/PICmicro/16F8X/30445c.pdf > > about 1.1Mb. > > The 16C62 is an 28-pin DIP micro with 22 I/O pins. Look here for the > 16C62: > > http://www.microchip.com/Download/Lit/PICmicro/16C6X/30234d.pdf > > about 3.6Mb! > > Good luck! > > Michael > > ************************************************************************* > When the way of the Tao is forgotten, kindness and ethics must be > taught. > Men must learn to pretend to be wise and good. -- Lao Tzu > ************************************************************************* > >