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*Have* to connect VDDA ? | Cypress Semiconductor

*Have* to connect VDDA ?

Summary: 2 Replies, Latest post by hli on 20 Apr 2016 10:46 AM PDT
Verified Answers: 1
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Rocketmagnet's picture
131 posts

I am using a CY8C5468 in a new design, but I am not using any analog blocks in the device.  What would happen if I left VDDA, VSSA, VCCA floating?


Many thanks



user_1377889's picture
9241 posts

Since no voltage in a PSoC4 design may be larger than VDDA you will have to connect that at least. So VSSA must be connected too. I do not know whether the other two MUST be connected, but I've never seen a design where those were left floating.



user_78878863's picture
2546 posts

Rule of thumb for all chips: connect all Vcc / Vdd pins, ever. They never should be left floating except the data sheets says you can.

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