Is the DS5003FP microprocessor from Dallas the kind that does not allow readout of the program. Does someone have a datasheet I could maybe buy from them I cannot find anything on the net about it, tried Google and there is nothing. Dallas/Maxim does not mention it on their web site. Please reply to this newsgroup.
Thank you
Aha. So what made you believe there *is* any such thing as a DS5003FP in the first place? Or that it's Dallas/Maxim that's making it?
lkjhgf schrieb: ^^^^^^ Whoever that is...
Since the DS5000FP, 5001FP and 5002FP are such "secure controllers" differing only in memory size and some security level details, it can be assumed that the 5003FP is a similar product. If there's no mention of it at Dallas/Maxims homepage, perhaps you should ask one of their distributors or sales offices for details.
Most microcontrollers have security features.
I can't find anything on a DS5003FP (it may not be generally available), but the other parts in the DS500x range are
8051-compatible microcontrollers. You *may* be able to infer some of the pinout from the circuit it's in, and match it against other 8051-class micros in the same package.
I only have an *old* (1988) data sheet for the DS5000. It has a feature that, if switched on, will encrypt program and data. (40 bit key, doesn't sound secure by today's standards!) You might try searching Dallas' site for the DS5000, and then "sneak up" on references to later family members.
There is an upgrade published for the DS5002FP, but nbr is DS5240/DS5250 according to APP 2034 May 14,2003 rw
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