Posted on: March 22, 2020 Posted by: admin Comments: 0


NM93C56MN – ?HQS=TI-null-null- dscatalog-df-pf-null-wwe. NMC93C56 – ?. 93c56 EEPROM are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for 93c56 EEPROM. Three-wire. Serial. EEPROM. 1K ( x 8 or 64 x 16). AT93C Note: Not recommended for new design; please refer to. AT93C46D datasheet.

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flashing a 93c56 EEPROM with arduino

Hi, What do the professionals do when they need to change instrument cluster? Is there a connector next to this chip which does this?

Given that it’s ‘in-circuit’- I presume soldered – you’ll probably need to break the leads to CS, SK ,DI DO, so as to prevent the existing curcuitry from preventing your operations. I’ll look into that cloning.

If you had the appropriate sw from the manufacturer I bet you could do this via the OBDII connector – but I also bet they’re not telling you how!


I actually did do some googling and most people either take it to the 933c56 or reflash it with an EEPROM flasher.

Is this something the arduino can handle? I just figured why not try with my arduino and learn a thing or two.

93C56 Datasheet PDF

And if dataasheet how would I go about doing this? I know this guy here did it with an off the shelf programmer, which is quite expensive compared to the arduino I all ready own. But what is the format of the data?

Just as the title states I wish to flash a 93c56 EEPROM in my jeep cherokee gauge cluster because my old gauge cluster has malfunctioned and the new one will have incorrect millage 9c56 the odometer. It won’t be easy, as they don’t want crooks ‘clocking’ the mileage. It may be cheaper and less risky to go to a Cherokee dealer and get him to do it I’ll see if I can find my old bitbasher datasheeet but given the datasheet you could figure it out.

There must be a procedure to clone the new cluster from the old. TomGeorge Design and Repair of industrial control systems.


If I do go about pulling the code, is there a circuit that needs setup and any pre written code for this? No clue how do I go about getting this info? ratasheet

(PDF) 93C56 Datasheet download

I just wonder if moving the chip might be a solution. But not that easy.

Well the good news is its a late model and I have everything I need from a junkyard for very cheap. Everything runs on smoke, let the smoke out, it stops running Writing to the eeprom isn’t too hard if you have access to the pins. Ill see what I can do about separating that chip. Not to mention so many people in the jeep community have arduinos and would benefit from this.


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