Re: 27cxxx eprom switcher
- From: Jan Panteltje <pNaonStpealmtje@xxxxxxxxx>
- Date: Thu, 08 Feb 2007 12:37:55 GMT
On a sunny day (Thu, 8 Feb 2007 07:01:33 +1030) it happened "mark krawczuk"
<krawczuk65@xxxxxxxxxxx> wrote in
<45ca3720$0$83734$c30e37c6@xxxxxxxxxxxxxxxxxxxxxxxxxxx>:
hi , can anyone point me in the right direction for a eprom switcher
schematic ?
this is what i want to do :
i have a engine ecu which contains a 27c128 eprom , i want to be able to
switch between 2 .bin files (maps) while the engine is running i.e on
the fly . i presume i will have to use a 27c256 eprom .?
any help appreciated.
mark k
Well, if it is just for yourself, solder 2 on top of each other and switch the
OE lines (you'd have to peal of the bottom ones OE line from the board), and
gate these with the board signal.
.
- References:
- 27cxxx eprom switcher
- From: mark krawczuk
- 27cxxx eprom switcher
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