Smart Module Series
SC262R_Series_Hardware_Design 32 / 115
4
SC262R-WF does not support GNSS.
BAT_ID
185
AI
Battery type
detect
V
I
= 0.1
–1.7 V
Internally pulled
down with a 100
kΩ
resistor.
If it is not used,
keep it open.
CHG_SEL
127
DI
Charging select
If you use an
internal charging
chip, keep this pin
open.
If you use an
external charging
chip, connect it to
GND.
ADC Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
ADC
128
AI
General-purpose
ADC interface
The maximum input
voltage is 1.7 V.
Antenna Interfaces
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
ANT_MAIN
87
AIO
Main antenna
interface
50
Ω impedance.
ANT_DRX
131
AI
Rx-diversity
antenna interface
ANT_GNSS
4
121
AI
GNSS antenna
interface
ANT_WIFI/BT
77
AIO
Wi-Fi/Bluetooth
antenna interface
GPIO Interfaces
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
GPIO_33
33
DIO
General-purpose
input/output
V
IL
max = 0.63 V
V
IH
min = 1.17 V
V
OL
max = 0.45 V
V
OH
min = 1.4 V
1.8 V power
domain.
GPIO_25
90
DIO
General-purpose
input/output
GPIO_130
97
DIO
General-purpose
input/output
GPIO_45
98
DIO
General-purpose
input/output