Product Info

Smart LTE Module Series
SC66 Hardware Design
SC66_Hardware_Design 39 / 139
ADC0 151 AI
General purpose ADC
interface
Max input voltage:
1.8V.
ADC1 153 AI
General purpose ADC
interface
Max input voltage:
1.8V.
Antenna Interfaces
Pin Name
Pin
No.
I/O Description
DC
Characteristics
Comment
ANT_MAIN 19
AI/
AO
Main antenna interface
50Ω impedance.
ANT_DRX 149 AI
Diversity antenna
interface
ANT_GNSS 134 AI
GNSS antenna
interface
ANT_WIFI/BT 129
AI/
AO
Wi-Fi/BT antenna
interface
ANT_WIFI_
MIMO
324
AI/
AO
Wi-Fi MIMO antenna
interface
50Ω impedance;
SC66-CE and SC66-W
do not support this
function.
FM_ANT 244 AI FM antenna interface
FM function is still
under development.
GPIO Interfaces
Pin Name
Pin
No.
I/O Description
DC
Characteristics
Comment
GPIO_21 231 IO GPIO
V
IL
max=0.63V
V
IH
min=1.17V
V
OL
max=0.45V
V
OH
min=1.35V
1.8V power domain.
GPIO_34 236 IO GPIO 1.8V power domain.
GPIO_40 238 IO GPIO 1.8V power domain.
GPIO_41 237 IO GPIO 1.8V power domain.
GPIO_55 178 IO GPIO 1.8V power domain.
GPIO_56 177 IO GPIO 1.8V power domain.
GPIO_72 239 IO GPIO 1.8V power domain.
GPIO_73 59 IO GPIO 1.8V power domain.
GPIO_74 58 IO GPIO 1.8V power domain.
GPIO_76 232 IO GPIO 1.8V power domain.