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Reading mechanical keypads | Cypress Semiconductor

Reading mechanical keypads

Summary: 0 Replies, Latest post by Arvind Krishnan on 02 Sep 2012 02:04 AM PDT
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Arvind Krishnan's picture
Cypress Employee
143 posts


Mechanical keypads are commonly available in two forms – matrix and common bus (depending on how individual switches are inter connected) :



There are multiple ways in which you can use a PSoC 1 to read mechanical keypads.


Appnote AN2034 shows you how to read matrix and common bus keypads, in both polled and interrupt modes.


The document and example projects can be downloaded from this page:





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