DAMN ISP HEADACHES!!!

Re-send...
> This is one of the decoupling caps between VCCINT 1.8v & GND.
> 
> As you can see, the 1.8v dips down to 1.625.  This creates havoc with the processing 
>inside the Altera EP20K200E which has clocks
> running at 133MHz, 125MHz, 95MHz, & 24MHz.
> 
> 16KB
> ftp://ftp.point-lab.com/quartus/Public/ProtelUsers/NoiseVcc18-2ns.png
> 14KB
> ftp://ftp.point-lab.com/quartus/Public/ProtelUsers/NoiseVcc18-4ns.png
> 
> Here is my current decoupling caps for the 1.8v.
> 
> 4 x 0.1uf smd 0805 ceramic.
> 3 x 470uf electrolytic.
> 
> See the problem?
> 
> I originally had 32 x 0.1uf, but some rush work with cut & paste at one time about 2 
>month ago left me with this to work with.
> 
> I need a temp fix where I only have 4 sets of access points around the APEX part 
>with nice Vias to 1.8v.
> 
> I can't get my hand on the Wima caps, any other solutions, or, recommendations?
> 
> ____________
> Brian Guralnick
> [EMAIL PROTECTED]
> Voice (514) 624-4003
> Fax (514) 624-3631
> 
> 
> 


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