🚀 go-pugleaf

Peter Jakacki wrote:
>
> Can anyone help me with locating a small quantity ( <50) of the ERASIC
> PLDs produced by EXEL part# XLS78C800-35.
>
> These are no longer in production but are an extremely versatile and
> low-power 24-pin PLD which I have built into some earlier designs.
 They were a nice part, and perhaps ahead of their time - no one else
second sourced them,
and they sank.


>
> Does anyone know of a similar part?
>   24 pin
>   15ma typical current
>   Electrically erasable
>   8 input latchs
>   32 buried 96 input NOR gates
>   10 output macrocells
>   10 buriable JK flip-flops

We use ATMEL ATV750BQL's in a lot of designs - they are the smartest 24
pin parts I know of.

They are similar, but not an exact match - it will depend on murphy
whether you can drop one in.
ATV750BQL			78C800
24 pin				>   24 pin
1-3mA				>   15ma typical current
EPROM  ( FLASH comming )	>   Electrically erasable
No Pin Latches			>   8 input latchs
2 x 22V10's - appx		>   32 buried 96 input NOR gates
10 T FlipFlop Pin MacroCells	>   10 output macrocells
10 T buried MacroCells		>   10 buriable JK flip-flops

With a ATV750BQL, you can get 8I 8IO on Philips i2c, and  8i 8io on our
new SPL bus (faster, more noise immune)

- jim granville.

jim granville wrote:
>
> Peter Jakacki wrote:

> > Does anyone know of a similar part?
> >   24 pin
> >   15ma typical current
> >   Electrically erasable
> >   8 input latchs
> >   32 buried 96 input NOR gates
> >   10 output macrocells
> >   10 buriable JK flip-flops
>
> We use ATMEL ATV750BQL's in a lot of designs - they are the smartest 24
> pin parts I know of.


Or there's ICTs PA7024I PEEL Array
> PA7024I
> 24 pin
> 120mA (ouch...) , 85mA Typ   <-- missed spec, here
> Electrically erasable
> 20 I/P latches, 20 O/P latches, 20 buried f/fs
> 2 x 22V10's - appx  ?
> speeds down to 9ns tpdi!

Plus ICTplace, which is a very good, free to qualified users, compiler,
fitter and simulator, all of which make ICT PEELS the default chip here.
To be honest, the time and hassle of PALASM just aren't worth it to me,
and the simulator is extremely handy. The range covers from 18CV8,
20CV8, 22CV10, PEEL7024 (described) PEEL7128 and PEEL 7140, a pretty
combat-capable device.

Have a rummage round

http://www.ictpld.com/ict/products/products.htm

Hope that helps. It's all opinion. As usual, tools matter to me more
than the silicon.

  Steve


--
Steve Wiseman, Senior Systems Engineer, SJ Consulting Ltd, Cambridge, UK
Desk +44 1223 578524 (Fax 578524) Group +44 1223 578518   st...@sj.co.uk