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AN2034 - PSoC® 1 - Reading Matrix and Common Bus Keypads | Cypress

AN2034 - PSoC® 1 - Reading Matrix and Common Bus Keypads

Last Updated: 
Aug 25, 2015
Version: 
*E

AN2034 shows how to use PSoC® 1 to read mechanical keypads. It covers matrix and common bus keypads, in both polled and interrupt modes.

Depending on how individual switches are connected, mechanical keypads are commonly available in two forms – matrix and common bus.

PSoC 1 - Reading Matrix and Common Bus Keypads

Example Project

Supported H/W and S/W Supported PSoC1 Devices
PSoC Designer Version H/W Kit CY8C20xxx CY8C21xxx CY8C22xxx CY8C23xxx CY8C24xxx CY8C27xxx CY8C28xxx CY8C29xxx
Yes 5.4 CY3210-PSoCEVAL1   x23, x34, x45 x45 x33 x23A, x94 x43 x x66