I use that chip in an old project with an 8051 microcontroller. They are becoming obsolete, I had to switch to the PSD913F if I recall correctly (or maybe the other way around?)
I have a couple of the programmers too. They work from the printer port, you are talking about certifiable dinosaurs :) Didier KO4BB On October 11, 2014 3:19:52 PM CDT, Tom Wimmenhove <tom.wimmenh...@gmail.com> wrote: >It's a chip (PSD813F) which has 1MBit flash, 16Kbit SRAM and 256Kbit >EEPROM. It's old school with parallel data/address bus and all that :) >It >does have JTAG. > >Regards, > Tom > >On Sat, Oct 11, 2014 at 7:45 AM, Didier Juges <shali...@gmail.com> >wrote: > >> Most EEPROMs have I2C or SPI interfaces. Some Flash chips have JTAG. >> >> Didier KO4BB >> >> On October 10, 2014 4:47:19 PM CDT, Tom Wimmenhove < >> tom.wimmenh...@gmail.com> wrote: >> >Thanks Joe! >> > >> >I don't have the clip-ons but of course I could get them. I know the >> >chip >> >has a JTAG interface, but I've only used JTAG with chips that came >with >> >a >> >programmer and software :) (except with OpenOCD over parport once, >but >> >that >> >was in the stone age). >> > >> >Another question about the EEPROM dump Elio Corbolante. The chip has >a >> >256Kbit (32KB) EEPROM and the dump is 160K: >> >-rw-rw-r-- 1 tom tom 160K nov 8 2012 FE5680A_EEPROM.bin >> > >> >Which part in this dump is the actual data from the EEPROM? >> > >> >Thanks in advance. >> > >> >Regards, >> > Tom >> > >> > >> > >> >On Fri, Oct 10, 2014 at 12:21 PM, Joseph Gray <jg...@zianet.com> >wrote: >> > >> >> I don't know how crowded the board is, but I would use an SMD DIP >> >clip >> >> instead of unsoldering the chip. >> >> >> >> Joe Gray >> >> W5JG >> >> On Oct 10, 2014 8:30 AM, "Tom Wimmenhove" ><tom.wimmenh...@gmail.com> >> >> wrote: >> >> >> >> > I recently came across a thread on this list about undocumented >> >FE5680 >> >> > commands. I have been using a little linux command line tool I >> >wrote >> >> years >> >> > ago for tuning the unit and decided to add these commands to it. >> >> > Since this mailing list was the place I found the unit (someone >> >linked to >> >> > an ebay seller) I figured I' d join the list and throw it on >here >> >:) >> >> > http://www.tomwimmenhove.com/otherstuff/fe5680-0.2.tgz >> >> > >> >> > Now, the bad news. I had my unit running overnight while logging >> >the >> >> serial >> >> > command output that reads the ADC, and in the morning it was no >> >longer >> >> > locked. The 10MHz signal disappears about 5 seconds after >power-on, >> >and >> >> > programmed offset was somehow reset to zero (it had been set to >> >-645). So >> >> > it appears as if the internal EEPROM has been corrupted. >> >> > I read a post from Elio Corbolante where he posted EEPROM and >> >firmware >> >> > dumps. Anyone have any idea on how to re-write this firmware >back >> >into >> >> the >> >> > EEPROM by hand (would this be possible through JTAG, or do I >> >actually >> >> have >> >> > to solder the chip out of there? :) ) Or maybe there's someone >> >willing to >> >> > sell their broken unit I could take the chip out of? >> >> > >> >> > Regards, >> >> > Tom >> >> > _______________________________________________ >> >> > time-nuts mailing list -- time-nuts@febo.com >> >> > To unsubscribe, go to >> >> > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> >> > and follow the instructions there. >> >> > >> >> > >> >> _______________________________________________ >> >> time-nuts mailing list -- time-nuts@febo.com >> >> To unsubscribe, go to >> >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> >> and follow the instructions there. >> >> >> >_______________________________________________ >> >time-nuts mailing list -- time-nuts@febo.com >> >To unsubscribe, go to >> >https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> >and follow the instructions there. >> >> -- >> Sent from my Motorola Droid Razr HD 4G LTE wireless tracker while I >do >> other things. >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> >_______________________________________________ >time-nuts mailing list -- time-nuts@febo.com >To unsubscribe, go to >https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >and follow the instructions there. -- Sent from my Motorola Droid Razr HD 4G LTE wireless tracker while I do other things. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.