[[Fwd: Matrix 6 questions]]

[Harry Bissell]

Harry Bissell writes: I've had that problem too. I changed the memory circuit
power supply to use a shottky diode (about .3v drop instead of .7).The
processor runs on 5V, the memory on 4.3V this is stupid cheap-ass ignorant
engineering when they could have done it right for an extra 20 cents (two more
diodes...) This made an improvment, but not a total cure. Problem seems to be
in the power-up reset circuit design, a line transient will scramble the
processor (and maybe corrupt memory too). I could fax you schems if you give
me your number. 
P.S. I heard a rumour that there was some fix for this... 


Joseph S Ramstrom <rams0046 at umn.edu> wrote:



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