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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I’ll see if I can find my old bitbasher – but given the datasheet you could figure it out.
(PDF) 93C56 Datasheet download
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 actually did do some googling and most people either take it to the dealership or reflash it with an EEPROM flasher. But what is the format of the data?
Well the good news is its 9c356 late model and I have everything I need from a junkyard for very cheap. Hi, What do the professionals do when they need to change instrument cluster?
TomGeorge Design and Repair of industrial control systems. Writing to the eeprom isn’t too hard if you have access to the pins.
National Semiconductor – datasheet pdf
And if so how would I go about doing this? I know this guy here did it with an off the shelf catasheet, which is quite expensive compared to the arduino I all ready own. I just wonder if moving the chip might be a solution. I’ll look into that cloning.
If I do go about pulling the code, is there a circuit that needs setup and any pre written code dataasheet this?
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!
It won’t be easy, as they don’t want crooks ‘clocking’ the mileage. Everything runs on smoke, let the smoke out, it stops running Not to mention so many people in the jeep community have arduinos and would benefit from this.
Is there a connector next to this chip which does this? It may be cheaper and less risky to go to a Cherokee dealer and get him to do it Ill see what I can do about separating that chip. But not that easy.
National Semiconductor
No clue how do I go about getting this info? There must be a procedure to clone the new cluster from the old.
Just as the title states I wish to flash a 93c56 EEPROM in my jeep cherokee datasheett cluster because my old gauge cluster has malfunctioned and the new one will have incorrect millage on the odometer.
I just figured why not try with my arduino and learn a thing or two. Is this something the arduino can handle?