User's Manual

MeiG hardware design guide
14
3.2 Pin definitions
Table 3.1：Pin description
Pin Name
Pin number
I/O
Description
Comment
The power supply
VBAT
49、50
I
The module provides four
VBAT power pin pins. The
SLM756P operates from a
single supply with a voltage
range from 3.3V to 4.2V for
VBAT.
Externally,
the
capacitor
and Zener
diode need
to be
increased
for surge
protection.
VBUS
51
I
Charging input power.
VCOIN
68
I/O
The external backup battery
provides power to the system
real-time clock when the
system power supply VBAT is
not in place. The backup
battery is charged when
VBAT is in place.
Connect the
3V button
battery or
large
capacitor to
the VCOIN
pin.
VREG_L2_1P2
6
O
1.2V power output for CAM
DVDD power supply
200mA
VREG_L6_1P8
7
O
1.8V power output for LCM,
Camera and other low current
supplies.
200mA
VREG_L17_2P85
8
O
2.85V power output for
Camera power supply.
420mA
VREG_L11_SDC
94
O
TF card power supply pin
600mA
VREG_L8_2P9
9
O
2.9V power output for Camera
power supply.
300mA
VREG_L14_UIM1
107
O
UIM1 power supply pin
55mA
VREG_L15_UIM2
103
O
UIM2 power supply pin
55mA
GND
3、15、22、25、
28、47、48、53、
55、56、60、62、
64、66、85、87、
93、102、111、
115、118
Ground
Display interface (MIPI)
MIPI_DSI0_CLK_N
119
I/O
MIPI_LCD clock
MIPI_DSI0_CLK_P
120
I/O
MIPI_DSI0_LANE0_N
121
I/O
MIPI_LCD data
MIPI_DSI0_LANE0_P
122
I/O