EPROM Programmer: Programming TMS2532 Chips w/ 25v

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SUMMARY

The discussion centers on programming TMS2532 chips, which require a 25V supply for successful programming. The GQ-4x4 programmer is ineffective for this task, prompting the search for a reliable USB programmer. The TL866-3G is suggested as a potential solution, while the EMP-20 is noted for its parallel port connection, which is less desirable. Additionally, the necessity of exposing the chips to UV light at 2537 Angstroms before programming is emphasized, with an improvised arc lamp method mentioned for this purpose.

PREREQUISITES
  • Understanding of TMS2532 chip specifications
  • Knowledge of programming voltage requirements (25V)
  • Familiarity with UV light exposure techniques for chip erasure
  • Experience with USB and parallel port programmers
NEXT STEPS
  • Research the TL866-3G USB programmer for compatibility with TMS2532 chips
  • Explore alternative USB programmers capable of providing 25V
  • Learn about UV erasing techniques and equipment for EPROMs
  • Investigate the use of arc lamps for chip programming and erasure
USEFUL FOR

Electronics hobbyists, EPROM programmers, and engineers involved in chip programming and erasure processes will benefit from this discussion.

imsmooth
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I want to program some TMS2532 chips that need 25v in order to program. The GQ-4x4 does not seem to be doing it. Any suggestions for a USB-type programmer for this task? I've seen the EMP-20, but it uses a parallel port that I am not thrilled about.
 
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Before this device is programmed, it must be exposed to a high-intensity uv light (2537 Angstroms).
Are you doing that?
If not, from personal experience I have discovered that an arc lamp improvised from a 40VDC supply and a #2 pencil will make quick work of it.
Most device programmers (such as your GQ-4x4) are able to scan the target device and report whether it is fully erased.
 
Yes
I’ve successfully programmed chips many times and I have a UV eraser.

My success with the 2532 is intermittent and when I put in oscilloscope on the pins I can see my programmer is not hitting the 25 V needed.
 
I haven't used that kind of programmer for a while. Even if I recalled model numbers, they likely wouldn't be available anymore.
Do you do "Blank" checks before programming?
 
Yes. Again, I am just asking if anyone knows of a good programmer that hits 25v reliably because the one I have doesn't.
 

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