AN3245

Hardware

Doc ID 17747 Rev 1

9/19

1.4.1

Matrix keys and special function keys

The following is the configuration of the maximum 10x8 (80) matrix keys and 8 special

function keys. When any of the special function keys are pressed, the matrix keys of the

corresponding row are not detected. For example, when special function key 1 (SKey1) is

pressed and held, all the matrix keys on row 0 (Key1- Key10) are not detected.

Please refer to Section 1.4.4 for care and handling of ghost keys.

Figure 8.

Matrix keys and special function keys configuration