Re: UD3 ROM on a 3032

From: Francesco Messineo <>
Date: Sun, 30 Oct 2016 22:45:24 +0100
Message-ID: <>
On Sun, Oct 30, 2016 at 9:15 PM, Gerrit Heitsch
<> wrote:
> On 10/30/2016 07:28 PM, Francesco Messineo wrote:
>> On Sun, Oct 30, 2016 at 7:23 PM, Gerrit Heitsch
>> <> wrote:
>>> 5V and 4.3V. If an EPROM starts to lose data, it helps to lower Vcc. Why
>>> becomes obvious once you understand how and EPROM cell works.
>> ok, I'll do that. If it's marginal, then it helps to read at Vcc of 5.5V
>> or 6V.
> No, if it's marginal, you need to read it at LOWER Vcc.

ok I understand, low gate charge makes a better "0" at lower Vcc, isn't it?
Ok, I just need some time, I'll make a socket with the embedded diode,
unless my programmer can use, say, 4.5V Vcc when reading. I'll post
the hopefully correct dump here one of the next days (or weeks).


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Received on 2016-10-30 22:00:02

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