You are here

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

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

Last Updated: 
Feb 19, 2018

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

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

Dear valued customer,

Thank you for choosing our products. They come with all the know-how and passion that our engineers have put into it. As you probably already know, Cypress is now Infineon. This is a major step for our company, but also for the good of you. 

Reliability and business continuity are of utmost importance for us. Hence, we remain fully committed to honoring existing customer and distributor relationships. This includes offering the legacy Cypress product portfolio. We thank you very much for your trusting support.

For the full version of this message, please download the PDF version.