Quectel SC262R Series, Hardware Design

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Smart Module Series
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3.3. Pin Description
Table 5: I/O Parameters Definition
The following table shows the pin definition and electrical characteristics of the module.
Table 6: Pin Description
Type Description
AI Analog input
AO Analog output
AIO Analog input/output
DI Digital input
DO Digital output
DIO Digital input/output
OD Open drain
PI Power input
PO Power output
PIO Power input/output
Power Supply
Pin Name Pin No. I/O Description DC Characteristics Comment
VBAT_BB 1, 2 PIO
Power supply for
the module’s
baseband part Vmax = 4.2 V
Vmin = 3.55 V
Vnom = 3.8 V
You must provide
them with sufficient
current of up to 3 A.
It is suggested to
add a TVS for surge
protection.
VBAT_RF
145,
146
PI
Power supply for
the module’s RF
part Vmax = 4.2 V
Vmin = 3.55 V
Vnom = 3.8 V
VRTC 126 PIO
Power supply for
RTC
V
O
max = 3.2 V
V
I
= 2.0
–3.25 V
If it is not used,
keep this pin open.