Smart Machine Smart Decision
SIM5320AL_User Manual_V1.01
2014-08-20
39
KEYPAD_0
30
Driving pads
KEYPAD_1
29
KEYPAD_2
30
KEYPAD_3
35
KEYPAD_4
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.
Figure 26: Reference circuit
If these pins are configured for GPIOs, the sequence is listed in the following table.
Table 19: GPIO configuration
Keypad interface
GPIO No.
KEYPAD_4
GPIO6
KEYPAD_3
GPIO7
KEYPAD_2
GPIO8
KEYPAD_1
GPIO9
KEYPAD_0
GPIO10
KEYSENSE_N4
GPIO11
KEYSENSE_N 3
GPIO12
KEYSENSE_N 2
GPIO13
KEYSENSE_N 1
GPIO14
Содержание SIM5320AL
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