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SIM5360_Hardware Design_V1.06
2016-11-17
38
3.9
Keypad Interface
SIM5360 module provides a keypad interface that supports five sense lines, or columns, and five keypad
rows. The interface generates an interrupt when any key is pressed.
Its operation voltage is 1.8V.
3.9.1
Pin Description
Table 19: Pin description
Pin name
Pin No.
Function
KBC0
28
Sensing keys
KBC1
27
KBC2
31
KBC3
32
KBC4
36
KBR0
30
Driving pads
KBR1
29
KBR2
30
KBR3
35
KBR4
34
3.9.2
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.
SIMCOM
CONFIDENTIAL
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