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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