SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
The keyboard controller detects and decodes multikey combinations using the following rules:
Figure 28-3 shows an example of multikey limitation.
When using the keyboard controller with a smaller keypad (for example, 5 × 5), unused rows must be tied high to prevent disturbing the scanning process. Normally, all rows must be pulled up internally at the I/O cells of the device.