
Smart Machine Smart Decision
SIM5800_Hardware Design_V1.01
33
2018-10-08
1 GND
2 LED+
3 LED+
4 LED-
5 LED-
6 LCD_ID
7 VCC(2.8V)
8 GND
9 GND
10 VCC_IO
11 RESET
12 TE
13 NC
14 NC
15 GND
16 DSI_D1-
17
18 GND
19 DSI_CLK-
20
21 GND
22 DSI_D0-
23
24 GND
25 GND
LCM
LED+
LED-
LCD_RST
LCD_TE
MIPI_DSI_L1N
MIPI_DSI_L1P
MIPI_DSI_CLKN
MIPI_DSI_CLKP
MIPI_DSI_L0N
MIPI_DSI_L0P
VIO28_PMU
1uF
1uF
VIO18_PMU
PWM
WLED
driver
VBAT
Module
Figure 24: LCD reference circuit
Note: MIPI is a high-speed signal line. In the PCB routing stage, please follow the impedance and length
requirements strictly. For detailed routing introduction, please refer to the chapter 5.2.4
4.10
Touch panel interface
The module provides a set of I2C interfaces that can be used to connect capacitive touch panel and provide the
required power supply and interrupt pin. The default interface pin of capacitive touch panel software as follows:
Table 10: Touch panel interface pin definitions1
Note : I2C requires external pull-up to VIO18_PMU, pull-up resistor 4.7Kohm.
4.11
Camera interface
SIM5800 supports two cameras:
2-lane MIPI_CSI primary camera up to 5MP resolution, Each group up to 1Gbps.
1-lane MIPI_CSI secondary camera up to 2MP resolution.
Table 11: Camera interface pin definitions
Pin Name
Pin
I/O
Description
CAM0_MCLK
74
O
Primary camera clock
CAM0_RST
79
O
Primary camera reset
CAM0_PWDN
80
O
Primary camera power down
Name
Pin
I/O
Description
CTP_I2C_SDA
48
I/O
Touch screen I2C data
CTP_I2C_SCL
47
O
Touch screen I2C clock
CTP_EINT
30
I
Touch screen interrupt
CTP_RST
31
O
Touch screen reset