17 May
2015
17 May
'15
3:55 p.m.
As far as I remember, + 25 isnt used for rom reading. You can read any
8048/8049 as 8748/8749 with no danger. And they have no soft protection. So
any uc *48 and *49 can be copied.
enviado do meu telemovel
Em 17/05/2015 16:48, "Eric Smith" <spacewar at gmail.com> escreveu:
On Sat, May 16, 2015 at 5:43 PM, Richard B. Main,
Esq.
<mainpatents at gmail.com> wrote:
The 8041 has the same pinout as the Intel 8741
programmable.
It's the same pinout, but the 8041 is NOT rated for application of
+25V to the EA pin, as used to do ROM verification of the 8741.
A Pro-Log M980 PROM Programmer with a PM 9054
personality module can
read out the programs
inside.
Does the Pro-Log have a specific setting for 8041, or are you using
the 8741 setting and overstressing the part?
I've successfully read 8048 parts using a programmer configured for
8748, but I only did that on parts that I could afford to sacrifice. I
don't have spares of the IOC 8041A, so I'm building a kludge to read
it properly without applying 25V to EA.