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.
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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 |
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| Yes | 5.4 | CY3210-PSoCEVAL1 | x23, x34, x45 | x45 | x33 | x23A, x94 | x43 | x | x66 | ||