Quectel SC20 Series Hardware Design page 33

Pin Name
ANT_MAIN
ANT_DRX
ANT_GNSS
ANT_WIFI/BT
GPIO Interfaces
Pin Name
GPIO_23
GPIO_32
GPIO_31
GPIO_92
2
GPIO_88
GPIO_89
GPIO_69
2
GPIO_68
GPIO_97
GPIO_110
GPIO_0
GPIO_15
2
GPIO_68 and GPIO_88 cannot be pulled up during start-up.
3
As for SC20-CE R1.1/-CEL R1.1, SC20-E/-EL, SC20-A/-AL, SC20-AU/-AUL, SC20-J/-JL, SC20-EU, pins 105, 116, 117,
118 and 119 are GPIO_0, GPIO_11, GPIO_10, GPIO_9 and GPIO_8 respectively; as for SC20-AX, SC20-EX, pins 105,
116, 117, 118 and 119 are GPIO_15, GPIO_3, GPIO_2, GPIO_1 and GPIO_0 respectively
SC20_Series_Hardware_Design
Pin
I/O Description
No.
Main antenna
87 AIO
interface
Rx-diversity
131 AI
antenna interface
GNSS antenna
121 AI
interface
Wi-Fi/Bluetooth
77 AIO
antenna interface
Pin
I/O Description
No.
General-purpose
33 DIO
input/output
General-purpose
90 DIO
input/output
General-purpose
97 DIO
input/output
General-purpose
98 DIO
input/output
General-purpose
99 DIO
input/output
General-purpose
100 DIO
input/output
General-purpose
101 DIO
input/output
General-purpose
102 DIO
input/output
General-purpose
103 DIO
input/output
General-purpose
104 DIO
input/output
General-purpose
3
105 DIO
input/output
Smart Module Series
DC Characteristics Comment
DC Characteristics Comment
V max = 0.63 V
IL
V min = 1.17 V
IH
V max = 0.45 V
OL
V min = 1.4 V
OH
.
50 Ω impedance.
1.8 V power
domain.
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