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 True USB Willem Programmer (GQ-2X,3X,4X & GQ-4x4)
 Getting GQ 4x4 To Work With TMS27C240-10JL

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tokyoscarab Posted - 01/17/2023 : 19:38:48
I've had a 4x4 for a bit and I've used it to program several EEPROMs. I have another one I need to program but I have a special situation. The chip I want to program is the Texas Instruments TMS27C240-10JL. That chip is a 40 pin DIP chip. The 4x4 only supports the TMS27C240. That chip is a QFN and requires the ADP-054 adapter. If I need to make my own adapter for the 10JL, I can do that, but I don't know how the pinout works for the 4x4. Also, can someone explain in more detail how adding devices to the device.txt works? I understand most of the parts, but I don't understand what things like "codesize". How does the codesize parameter work? Any help on how I can get this chip working with the 4x4 would be greatly appreciated!

Here is a link to the datasheet:
https://pdf1.alldatasheet.com/datasheet-pdf/view/557267/TI/TMS27C240-10JL.html
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anniel Posted - 01/18/2023 : 14:17:55
quote:
Originally posted by tokyoscarab

I guess my question is, do I even need the adapter? My 4x4 already has a 40 pin ZIF socket and the chip is a 40 pin DIP. Why would I need the adapter? If a couple pins don't line up to the pinout of the ZIF, I could just make an adapter board to correct those pins. What is the pinout of the ZIF? Is there anything I would need to know to make an adapter just using prototyping board, pin headers, and wires? Thanks





If you want to make it on a protoboard you will definitely need a schematic or figure out the 16bit logic yourself.
tokyoscarab Posted - 01/18/2023 : 10:43:40
I guess my question is, do I even need the adapter? My 4x4 already has a 40 pin ZIF socket and the chip is a 40 pin DIP. Why would I need the adapter? If a couple pins don't line up to the pinout of the ZIF, I could just make an adapter board to correct those pins. What is the pinout of the ZIF? Is there anything I would need to know to make an adapter just using prototyping board, pin headers, and wires? Thanks

anniel Posted - 01/18/2023 : 08:05:18
quote:
Originally posted by tokyoscarab

I've had a 4x4 for a bit and I've used it to program several EEPROMs. I have another one I need to program but I have a special situation. The chip I want to program is the Texas Instruments TMS27C240-10JL. That chip is a 40 pin DIP chip. The 4x4 only supports the TMS27C240. That chip is a QFN and requires the ADP-054 adapter. If I need to make my own adapter for the 10JL, I can do that, but I don't know how the pinout works for the 4x4. Also, can someone explain in more detail how adding devices to the device.txt works? I understand most of the parts, but I don't understand what things like "codesize". How does the codesize parameter work? Any help on how I can get this chip working with the 4x4 would be greatly appreciated!

Here is a link to the datasheet:
https://pdf1.alldatasheet.com/datasheet-pdf/view/557267/TI/TMS27C240-10JL.html


ADP-054 has a 40pin ZIP. The codesize parameter is the size given in the datasheet.

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