Revelprog IS Programmer wiring diagram for SOIC clip to read/write 93c56/66 chips

**buds** · 24th November, 2020, 10:10 PM

Hi I have a Revelprog IS programmer and was hoping not to have to desolder the 93c56 and 66 chips so I can program them in place using the SOIC clip.

Does anybody have the wiring sequence for the harness which attaches to the SOIC clip as cannot read the chips in place, or is it possible to actually program these chips in series without removing them. Toyota models mostly Alphard and Vellfire.

Any Help appreciated

**Jardel** · 24th November, 2020, 11:36 PM

I don't know this programmer, but to read the circuit you would need to decrease the voltage. Does it have this feature? And as for the pinout, if it's an adapter cable you can figure out the sequence yourself with a multimeter.

**Jasko93** · 25th November, 2020, 09:42 AM

Hello i use this programmer i have the same problem in 93..86 Try without 6 pin : https://www.youtube.com/watch?v=bl2FaM1SxK4 and use vpp to 3,3V

**buds** · 25th November, 2020, 10:46 AM

Originally Posted by Jardel

I don't know this programmer, but to read the circuit you would need to decrease the voltage. Does it have this feature? And as for the pinout, if it's an adapter cable you can figure out the sequence yourself with a multimeter.

Hi Thanks yes have tried reducing voltage and dozens of wiring combinations on a removed chip but just will not read it. In the unit it reads perfectly.