no, it's about $4.40 for 84 outputs (clear logic 3v3)




Tal Dayan <tal@ZAPTA.COM>
Gesendet von: pic microcontroller discussion list <PICLIST@MITVMA.MIT.EDU>
20.06.02 16:43
Bitte antworten an pic microcontroller discussion list


        An:     PICLIST@MITVMA.MIT.EDU
        Kopie:
        Thema:  Re: Antwort: [PIC]: cheapest way for adding output pins ?


7$ for a 84 pin PLD (clear logic) translates to about 8c per output. About
double than
using 595 shift registers.

Is it so ? Any cheaper alternative ?

Thanks,

Tal

> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Martin Buehler
> Sent: Wednesday, June 19, 2002 11:32 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Antwort: [PIC]: cheapest way for adding output pins ?
>
>
> beside asics, there are also fpgas, which could eventually be
> interresting. with an altera 7128, you can get 84 outputs for about $9,
or
> if you are happy with 0/3.3V, it drops by $1.
> for series production, you can migrate an altera design to clear logic.
> they produce asics based on fpga designs, with no nre cost. this drops
the
> price by about 2.
>
>
>
>
>
> Tal Dayan <tal@ZAPTA.COM>
> Gesendet von: pic microcontroller discussion list
<PICLIST@MITVMA.MIT.EDU>
> 20.06.02 06:17
> Bitte antworten an pic microcontroller discussion list
>
>
>         An:     PICLIST@MITVMA.MIT.EDU
>         Kopie:
>         Thema:  [PIC]: cheapest way for adding output pins ?
>
>
> Hello,
>
> One of the designs I am working needs many (100 to 200) outputs pins
(0/5V
> signal) controlled by a single mid size PIC. What is the cheapest way
> (cents
> per output pin) adding output pins to a PIC ?
>
> This is a mass production product but an ASIC is out of question at this
> point.
>
> Speed is not an a primary issue so using reasonable serial communication
> is
> OK.
>
> Thanks,
>
> Tal
>
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