Smart Wi-Fi Module Series
SC20-WL Hardware Design
SC20-WL_Hardware_Design
21 / 81
pull up circuits and
conversion circuit.
LDO6_1V8
125
PO
1.8V output power
supply
Vnorm=1.8V
I
O
max=100mA
Power supply for
peripherals.
2.2uF~4.7uF
capacitor is
recommended to
be applied to the
LDO6_1V8 pin.
If unused, keep this
pin open.
LDO17_
2V85
129
PO
2.85V output power
supply
Vnorm=2.85V
I
O
max=300mA
Power supply for
peripherals.
2.2uF~4.7uF
capacitor is
recommended to
be applied to the
LDO17_2V85 pin.
If unused, keep this
pin open.
SD_LDO11
38
PO
Power supply for SD
card
Vnorm=2.95V
I
O
max=600mA
SD_LDO12
32
PO
1.8V/2.95V output
power supply
Vnorm=2.95V
I
O
max=50mA
Power supply for
SD card
’s pull-up
circuit.
GND
3, 7, 12, 15,
27, 51, 62,
69, 76, 78,
85, 86, 88,
89, 120,
122, 130,
132, 135,
140, 143,
144,
147~150,
160~178,
180~182,
184~186,
188, 189,
192, 193,
198, 200,
201, 208,
209
GND