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Nluke.1
Associate II
September 24, 2026
Question

Program the ST72UD05 or L9805E

We need to develop the offline tool to program the device ST72UD05, it is seems similar with L9805E.

But we could not find the definition of the programming interface or the programming protocal.

It contain the EPROM/OTP, it is very different with other ST72 family devices which programmed with ICC.

So we need the programming document about programming the device.

2 replies

Peter BENSCH
ST Technical Moderator
October 2, 2026

Unfortunately, the ST72UD05 has not only been obsolete for many years, but no information is available on it any longer either. If not even the Wayback Machine lists anything about it (it doesn’t), and none of the users who are probably now retired come forward with any information either, then presumably nobody can help you.

I’m terribly sorry that I can’t help.

Regards
/Peter

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Nluke.1
Nluke.1Author
Associate II
October 3, 2026

Thanks your information anyway.

Thanks a lot 

Luke