Simplified PSoC schematic? | Cypress Semiconductor
Simplified PSoC schematic?
One thing I'm finding frustrating about using the PSoC 3s is that they seem to require a huge number number of capacitors and complex power connections. For very space constrained applications, these can make things difficult. The QFN48 package apparently needs 9 capacitors, 10 power and 7 GND connections !
My question are: Is every power connection really necessary? Is every capacitor really necessary?
For example, do I need the capacitor on Vddio3 if I am only going to be using the pins in that quadrant as analog inputs? In fact, do I even need the power connection there? Could I just use one capacitor for all of the Vddio pins?
On the attached image, you can see my space constrained PCB, and part of the schematic for it. On the schematic, I have removed the capacitors from two of the Vddio0 pins (13 & 24) to try to give me some space.