Product Info

Smart Module Series
SC200R Series Hardware Design
SC200R_Series_Hardware_Design 22 / 125
3.3. Pin Description
Table 7: I/O Parameters Definition
The following table shows the pin definition and electrical characteristics of the module.
Table 8: Pin Description
Type Description
AI Analog input
AO Analog output
DI Digital input
DO Digital output
IO Bidirectional
OD Open drain
PI Power input
PO Power output
Power Supply
Pin Name Pin No. I/O Description DC Characteristics Comment
VBAT_BB 1, 2
PI/
PO
Power supply for
the module’s
baseband part
Vmax = 4.2 V
Vmin = 3.55 V
Vnorm = 3.8 V
You must provide
them with sufficient
current of up to
3.0 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
Vnorm = 3.8 V
VRTC 126
PI/
PO
Power supply for
internal RTC
circuit
V
O
max = 3.2 V
V
I
= 2.0–3.25 V
If it is not used,
keep this pin open.
LDO5_1V8 111 PO
1.8 V output
power supply
Vnorm = 1.8 V
I
O
max = 20 mA
Power supply for
external GPIO’s
pull-up and level
shift circuits.