PD17202AGF-011_15 Datasheet, PDF (9/30 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLER WITH LCD CONTROLLER/DRIVER AND KEY SCAN CIRCUIT FOR FPC (FRONT PANEL CONTROLLER)

2.2 Connection of Key Matrix
An example of connection of the key matrix is shown below.
KSn
µPD17202AGF-011
Momentary key = Kn
µ PD17202AGF-011
KS4 41
KS3 40
KS2 39
KS1 38
KS0 37
K5 34
K4 33
K0 K1 K2 K3
29 30 31 32
7