Table of Contents
Advertisement
LCD_TE
LCD_RST
Module
MIPI_DSI_LN3P
MIPI_DSI_LN3N
MIPI_DSI_LN2P
MIPI_DSI_LN2N
MIPI_DSI_LN1P
MIPI_DSI_LN1N
MIPI_DSI_LN0P
MIPI_DSI_LN0N
MIPI_DSI_CLKP
MIPI_DSI_CLKN
MIPI are high speed signal lines. It is recommended that common-mode filters should be added in series
near the LCM connector, so as to improve protection against electromagnetic radiation interference.
ICMEF112P900MFR from ICT is recommended.
When compatible design with other displays is required, please connect the LCD_ID pin of LCM to the
module's ADC pin, and please note that the output voltage of LCD_ID cannot exceed the voltage range of
ADC pin.
Backlight driving circuit needs to be designed for LCM, and a reference circuit design is shown in the
following figure. Backlight brightness adjustment can be realized by PWM pin of SC20-WL module
through adjusting the duty ratio.
SC20-WL_Hardware_Design
LCM_LED+
LCM_LED-
1
2
1
2
1
2
1
2
1
2
EMI filter
Figure 19: Reference Circuit Design for LCM Interface
LDO6_1V8
LDO17_2V85
C1
C2
100nF
4.7uF
FL1
3
4
FL2
3
4
FL3
3
4
FL4
3
4
FL5
3
4
Smart Wi-Fi Module Series
SC20-WL Hardware Design
1
LEDA
2
NC
3
LEDK
4
NC
5
LPTE
6
RESET
7
LCD_ID
8
NC(SDA-TP)
C3
9
NC(SCL-TP)
10
1uF
NC(RST-TP)
11
NC(EINT-TP)
12
GND
13
VIO18
14
VCC28
15
NC(VTP-TP)
16
GND
17
MIPI_TDP3
18
MIPI_TDN3
19
GND
20
MIPI_TDP2
21
MIPI_TDN2
22
GND
23
MIPI_TDP1
24
MIPI_TDN1
25
GND
26
MIPI_TDP0
27
MIPI_TDN0
28
GND
29
MIPI_TCP
30
MIPI_TCN
LCM
49 / 81
Advertisement
Table of Contents
