User's Manual

Smart Machine Smart Decision

SIM5360A_User_Manual_V1.03 2014-07-03

KBC4 36

KBR0 30

Driving pads

KBR1 29

KBR2 30

KBR3 35

KBR4 34

3.7.2 Application Guide

All keypad pins can be configured for GPIOs. These GPIOs also support interruption operation if used as

input pins. A typical circuit about the keypad (5*5 keypad matrix) is shown in the following figure.

KBR4

KBR3

KBR2

KBR1

KBR0

KBC0

KBC1

KBC2

KBC3

KBC4

Figure 24: Reference circuit

If these pins are configured for GPIOs, the sequence is listed in the following table.

Table 16: GPIO configuration

Keypad interface GPIO No.

KBR4 GPIO6

KBR3 GPIO7

KBR2 GPIO8

KBR1 GPIO9

KBR0 GPIO10