for a small PIC-controlled terminal (LCD-Display), I got a "older"
mimi-keyboard (53 key) with a AY-5-2376 KB controller. Unfortunately, I did
not find any documentation about this chip. It has a label "GI" which is
probably General Instruments, however, as far as I know they have sold a
portion of their semiconductors. I also did not get any answer from their
technical support ... I am not a interessting client, probably ...
Does somebody have a data sheet or a pointer to it, or know this chip somehow ?
>for a small PIC-controlled terminal (LCD-Display), I got a "older"
>mimi-keyboard (53 key) with a AY-5-2376 KB controller. Unfortunately, I did
>not find any documentation about this chip.
I'll look in my old GI data book as soon as I can.
May be a couple of days, though, before I get to my other
office (where my data books are).
At 12:05 PM 10/02/96 +0200, you wrote:
>Hi all,
>
>for a small PIC-controlled terminal (LCD-Display), I got a "older"
>mimi-keyboard (53 key) with a AY-5-2376 KB controller. Unfortunately, I did
>not find any documentation about this chip. It has a label "GI" which is
Hi Herve,
I have information on this chip in the form of a booklet published by
SouthWest Technical Product Corporation called "Keyboard and Encoder". This
10 page booklet includes a full schematic with pin numbering that should
help you find the info you need. It also has all the code assignment chart
for lower and upper case mode. I do not have a scanner handy but if you are
interested I will fax it to you.
As a quick overview, the 40 pin IC requires 5 volt on pin 1, -12 volts on
pin 18, ground on pin 17 and pin 20. Shift and Control are at pin 4 and 5
respectively. Matrix input from the keyboard goes to pin 21 to 37. Outputs
are: 7 - parity, B1 - 15, B2 - 14, B3 - 13, B4 - 12, B5 - 11, B6 - 10 or 8
depending on case and B7 - pin 9. The keypress (or strobe) comes from pin
7. Pin 19 is connected to an RC combination consisting of a 0.01mf
capacitor and a 680k res.
Please let me know if you want the full booklet, I will gladly fax it to you.
In message <.....2.2.32.19961002100509.00697c88KILLspam@spam@elwood.ethz.ch>>
PICLISTKILLspamMITVMA.MIT.EDU writes:
> Hi all,
>
> for a small PIC-controlled terminal (LCD-Display), I got a "older"
> mimi-keyboard (53 key) with a AY-5-2376 KB controller. Unfortunately, I did
> not find any documentation about this chip. It has a label "GI" which is
> probably General Instruments, however, as far as I know they have sold a
> portion of their semiconductors. I also did not get any answer from their
> technical support ... I am not a interessting client, probably ...
>
> Does somebody have a data sheet or a pointer to it, or know this chip somehow
?
>
For what its worth, I used to use this chip some years ago, but it has
been obsolete for at least 8 years.
I know 'cos I spoke to a GI rep before designing it in to the product
and asked specifically if it was safe to design it in. I was told it was.
Six months later when trying to place pre-production quantity orders I
was given the news that it was no longer available. We had good success
it from some of the difficult to find IC suppliers though.
inorg.chem.ethz.ch, http://www.analytica.ethz.ch/cousin.html
