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FIBOCOM SC138-
NA
Series Hardware Guide
49/88
1)
VREG_L22A_2P96 is an external drive power supply for SD card, which can provide about 600 mA
current with the line width of 1 mm.
2)
The SD_CARD_DET_N pull-up resistor is connected to VREG_L9A_1P8 power supply.
3)
SDIO is a high-speed digital signal line and needs to be shielded.
4)
SDIO data lines are processed to be of equal length.
3.9
GPIO
SC138 series modules have abundant GPIO resources, the interface level is 1.8 V, and the pin definition
is shown in the following table:
Table 3-12 GPIO list
Pin Name
Pin No.
Reset State
Interrupt Function
GPIO_129
105
B-PD:nppukp
NO
GPIO_70
110
B-PD:nppukp
NO
GPIO_86
117
B-PD:nppukp
NO
GPIO_84
112
B-PD:nppukp
NO
GPIO_33
97
B-PD:nppukp
YES
GPIO_83
111
B-PD:nppukp
NO
GPIO_124
100
B-PD:nppukp
YES
GPIO_58
103
B-PD:nppukp
YES
GPIO_57
102
B-PD:nppukp
YES
GPIO_130
220
B-PD:nppukp
YES
GPIO_132
221
B-PD:nppukp
YES
GPIO_93
39
B-PD:nppukp
NO
GPIO_123
99
B-PD:nppukp
YES
GPIO_31
86
B-PD:nppukp
NO
GPIO_41
98
B-PD:nppukp
NO
GPIO_116
217
B-PD:nppukp
NO
GPIO_115
216
B-PD:nppukp
NO