Strictly necessary cookies are on by default and cannot be turned off. Functional, Performance and Tracking/targeting/sharing cookies can be turned on below based on your preferences (this banner will remain available for you to accept cookies). You may change your cookie settings by deleting cookies from your browser. Then this banner will appear again. You can learn more details about cookies HERE.
Strictly necessary (always on)
Functional, Performance and Tracking/targeting/sharing (default off)
Question: PSoC1 has only one shield electrode on chip but PSoC3/5 supports multiple shield electrodes. What is the use for multiple shield electrodes? How to select how many shield electrodes to be used?
Multiple Shields are available in PSoC 3/5 to allow simplified routing on PCBs so that a single shield trace does not need to cross as many sensor traces possibly reducing board cost (layers) and/or improving signal to noise because of improved trace layout and ground plane coverage. One shield pin will also work just as well ignoring the mentioned layout issues. The Shields do no need to be connected together on the PCB because they are already connected together inside the device using an analog global bus. There is only 1 shield on PSoC1 because it is hard wired rather than using the flexible buses of PSoC 3/5.