How to use cheap CH341A programmer for read/write 95xxx Eeproms

[racoxd]

but then how is this guy doing it? (It's the same car)
https://youtu.be/oIz-mccrEWA?&t=128

[racoxd]

Issue from #99
SOLVED!

thanks to user An2pl who advised me to:
1. isolate pin3 from the clips adapter (pics below)
2. use 3.3v rather than 5v.
and this did the trick! I successfully read/wrote to the chip to clear the crash data.
I also tested reading with 5V and it worked too, but 3.3v is recommended for 95640 chips so I'd stick to that.

pin3.jpgpin3_.jpg

[AudiS4]

I did notice that there are more than 1 version of this chip reader the the boards are different. This may be the reason why some work and others don't as the cut trace may be there but serves a different purpose. I ran into this issue recently.

[rysiek2]

I would like to thank my colleagues for the substantive discussion.
It helped me a lot. It turned out that in my case it was enough to use AsProgrammer without any changes to the layout.

[fredix]

Hello, thank you all for all this information which allowed me to troubleshoot the airbag warning light on a Suzuki Swift.
The eeprom is a 95160, I didn't touch anything on the CH341A programmer, the latter worked very well with the NeoProgrammer software.
FYI, I successfully reprogrammed directly with pliers, without unsoldering the eeprom.
Good day.

[~rexdv~]

Hallo,

I need some help with my new CH341A, I want to read a cluster eeprom (24C32/24C64) with the test clamp.
Are there any information about the installation?
3,3V or 5V?

I hope someone could help.

Thank you
~rexdv

[thomp1983]

Hello,

Can anyone help me read a chip with asprogrammer 2.1.0.13?

I've attached a photo of my setup, the chip I need to read is G93LC86C I've tried selecting both microwire M93C86_8bits and M93C86_16bits both produce a microwire ic not responding error. The autodetect button produces a ic not responding error.

I've tried my programmer in both the 24xx and 25xx slots with no success.

Thanks
Chris

[fuzz1]

My advice is not to read in circuit.

[Infinity70]

nzjohn https://www.digital-kaos.co.uk/forums/member.php/746870-nzjohn Hi . Can you please send me the correct pin connection ?

[Infinity70]

To flash 93xxx series eeproms with a CH341, buy some female to male jumper wires. Connections are named on the reverse of your CH341 at the base of the pins. You have 5V, 3.3V, GND, MIOS, MOSI, CS, and CLK. Using jumper wires of 8 colors for ease of use, connect the female ends to the CH341 pins while the other male end runs to your clip or board with the eeprom attached . Eeprom pin 1 connects to CS, Eeprom 2 connects to CLK, Eeprom 3 to MOSI, Eeprom 4 to MIOS, 5 to GND, 6 to 3.3V, and lastly join the wires from Eeprom 7 and 8 together and connect these to your CH341 5V pin. It's best to solder the eeprom to a board but a clip is almost as effective.
If you can use color coded wires it's easier to check you are connecting to the correct places.
I'll post clearer pics if anyone has problems. Ch341 can be left exactly as it was delivered. No soldering or additions are required. Leave the yellow jumper exactly on the two pins [as it arrived] on the CH341.
Remember to check your connections and this will work as I've outlined.
Good luck
Any issues..
Recheck your connections!
Good luck and all the best.
.Attachment 791553Attachment 791549
,

Hi all . I maked all than nzjohn but dont read. Can maybe somebody say what is wrong ? Thank you

asprogrammer.jpg

[thomp1983]

Hello,

Can anyone help me read a chip with asprogrammer 2.1.0.13?

I've attached a photo of my setup, the chip I need to read is G93LC86C I've tried selecting both microwire M93C86_8bits and M93C86_16bits both produce a microwire ic not responding error. The autodetect button produces a ic not responding error.

I've tried my programmer in both the 24xx and 25xx slots with no success.

Thanks
Chris

So after some time I found out the pin wiring is different for the G93LC86C chip so I need to repin my soic clip.

Now I've got a dump from the chip what is the best way to read what's in it and edit it, this is for an audi instrument cluster?

Thanks
Chris

[DerJona1]

Thanks for the good explanation on how to use!

[nzjohn]

Use a CH341a programmer to read or write to 93XXX Eeproms UPDATE:
Only six wires are required to write to 93C66 (plus 93A66) series chips. The connection to 3.3 v is not required, so I've simplified the set up and listed the details below.
Pin 1 on the 93C66 chip via clip and lead goes to the CH341a pin which is marked underneath as CS, pin 2 to CLK, pin 3 to MOSI, pin 4 MIOS, pin 5 {opposite to 4 in my picture} to GND, then we have 3.3 volts which can be left OFF, lastly connect pin 8 (opposite to pin 1) to the CH 341a 5 V pin.
The connections on the clip at either end can break, and as they are hidden by black wrap this is very easily overlooked. Go over your connections, test, and re-solder if necessary. This method works so if you have issues, check and double check.
I apologize for not answering all questions, but I'm no expert and tech questions are best left to more knowledgeable members. The configuration outlined in my post works repeatedly for me without any changes to the CH341a board whatsoever.
Thanks and all the best! Bad readings are usually caused by bad connections, incorrect chip, or impatience.
pic.jpg

[Tomek84]

Hi, iam trying to program a S93a66 and am able to read the chip but i dont know where the information is stored for the KM, and how to make the required changes. the chip is our of a 2007 Holden Rodeo 2.4 which might be the same as a 2007 Isuzu Dmax 2.4.
any help would be great

[linn123]

https://320volt.com/ch341a-95640-eep...-sifresi/#page