At 03:25 PM 21/08/96 +0300, you wrote:

>I am doing low power development and have been using the 16C65/JW (Eprom
>version configured in LP mode and running it at 3V and 200KHz, basically at
the >edges of the mode. I have now gone through 10 chips all with the same
problem. >They start off working fine and then after about 2 weeks they will
not work at >3V and I can only use them from 5V and XT setting. The chips (I
am told by the >local supplier) have a life of 20-30 erases and I never
reached that limit.
>
>Moshe

        This sounds like a problem with your programmer.

        What programmer are you using? Is it verifying the programmed chip
        at the correct operational voltages?  (please tell me you are not
        programming the chip at 5V?)

___Bob