思澈开发板LCM转接板制作指南¶
本文指导如何给思澈开发板做配套转接板,用来调试第三方显示屏。
思澈开发板屏幕接口类型¶
16p QSPI FPC
SF32LB52-DevKit-Nano
SF32LB52-DevKit-Core
22p QSPI FPC
SF32LB52-DevKit-LCD
SF32LB52-DevKit-ULP(立创.黄山派)
40p RGB FPC
SF32LB56-DevKit-LCD
SF32LB58-DevKit-LCD
30p MIPI-DSI FPC
SF32LB58-DevKit-LCD
思澈开发板屏幕接口定义¶
16p QSPI FPC接口¶
PIN |
DevKit FPC CON PIN-Name |
Descriptions |
LCM PIN-Name |
---|---|---|---|
1 |
GND |
Power Supply Ground |
GND |
2 |
LCD_RST |
LCD reset output Active low |
RESX |
3 |
BL_PWM |
Back light PWM control output |
BL |
4 |
TE |
Tearing effect input |
TE |
5 |
QSPI_CS |
LCD QSPI Chip select output |
CSx |
6 |
QSPI_CLK |
LCD QSPI clock output |
CLK/WRx |
7 |
QSPI_D0 |
LCD QSPI data 0 inout |
D0/RDx |
8 |
QSPI_D1 |
LCD QSPI data 1 output |
D1/DCx |
9 |
QSPI_D2 |
LCD QSPI data 2 output |
D2 |
10 |
QSPI_D3 |
LCD QSPI data 3 output |
D3 |
11 |
3.3V |
DC 3.3V Power Supply |
VCI |
22 |
GND |
Power Supply Ground |
GND |
13 |
TP_INT |
TP Interrupt signal inout |
TP-INT |
14 |
TP_SDA |
TP I2C data signal |
TP-SDA |
15 |
TP_SCL |
TP I2C clock signal |
TP-SCL |
16 |
TP_RST |
TP Reset |
TP-RTN |
22p QSPI FPC接口¶
PIN |
DevKit FPC CON PIN-Name |
Descriptions |
LCM PIN-Name |
---|---|---|---|
1 |
LEDK |
LED cathode |
LEDK |
2 |
LEDA |
LED anode |
LEDA |
3 |
D2/DB0 |
LCD QSPI data 2,8080 data 0 |
DB0 |
4 |
D3/DB1 |
LCD QSPI data 3,8080 data 1 |
DB1 |
5 |
DB2 |
8080 data 2 |
DB2 |
6 |
DB3 |
8080 data 3 |
DB3 |
7 |
DB4 |
8080 data 4 |
DB4 |
8 |
DB5 |
8080 data 5 |
DB5 |
9 |
DB6 |
8080 data 6 |
DB6 |
10 |
DB7 |
8080 data 7 |
DB7 |
11 |
TE |
Tearing effect input |
TE |
12 |
LCD_RST |
LCD reset output Active low |
RESX |
13 |
CLK |
LCD QSPI clock output |
CLK/WRx |
14 |
D0/RD |
LCD QSPI data 0 inout |
D0/RDx |
15 |
CS |
LCD QSPI Chip select output |
CSx |
16 |
D1/DC |
LCD QSPI data 1 output |
D1/DCx |
17 |
3.3V |
DC 3.3V Power Supply |
VCI |
18 |
TP_INT |
TP Interrupt signal inout |
TP-INT |
19 |
TP_SDA |
TP I2C data signal |
TP-SDA |
20 |
TP_SCL |
TP I2C clock signal |
TP-SCL |
21 |
TP_RST |
TP Reset |
TP-RTN |
22 |
GND |
Power Supply Ground |
GND |
40p RGB FPC接口¶
PIN |
DevKit FPC CON PIN-Name |
Descriptions |
LCM PIN-Name |
---|---|---|---|
1 |
5V |
DC 5V Power Supply |
DC5V |
2 |
5V |
DC 5V Power Supply |
DC5V |
3 |
R0 |
Red data 0 |
DR0 |
4 |
R1 |
Red data 1 |
DR1 |
5 |
R2 |
Red data 2 |
DR2 |
6 |
R3 |
Red data 3 |
DR3 |
7 |
R4 |
Red data 4 |
DR4 |
8 |
R5 |
Red data 5 |
DR5 |
9 |
R6 |
Red data 6 |
DR6 |
10 |
R7 |
Red data 7 |
DR7 |
11 |
GND |
Power Supply Ground |
GND |
12 |
G0 |
Green data 0 |
DG0 |
13 |
G1 |
Green data 1 |
DG1 |
14 |
G2 |
Green data 2 |
DG2 |
15 |
G3 |
Green data 3 |
DG3 |
16 |
G4 |
Green data 4 |
DG4 |
17 |
G5 |
Green data 5 |
DG5 |
18 |
G6 |
Green data 6 |
DG6 |
19 |
G7 |
Green data 7 |
DG7 |
20 |
GND |
Power Supply Ground |
GND |
21 |
B0 |
Blue data 0 |
DB0 |
22 |
B1 |
Blue data 1 |
DB1 |
23 |
B2 |
Blue data 2 |
DB2 |
24 |
B3 |
Blue data 3 |
DB3 |
25 |
B4 |
Blue data 4 |
DB4 |
26 |
B5 |
Blue data 5 |
DB5 |
27 |
B6 |
Blue data 6 |
DB6 |
28 |
B7 |
Blue data 7 |
DB7 |
29 |
GND |
Power Supply Ground |
GND |
30 |
CLK |
clock output |
PCLK |
31 |
HSYNC |
Horizontal sync signal output |
HSD |
32 |
VSYNC |
Vertical sync signal output |
VSD |
33 |
DE |
DE signal when DE mode |
DEN |
34 |
BL_PWM |
Backlight brightness adjustment signal |
BL-PWM |
35 |
TP_RST |
TP Reset |
TP-RTN |
36 |
TP_SDA |
TP I2C data signal |
TP-SDA |
37 |
NC |
None connect |
NC |
38 |
TP_SCL |
TP I2C clock signal |
TP-SCL |
39 |
TP_INT |
TP Interrupt signal inout |
TP-INT |
40 |
LCD_RST |
LCD reset output Active low |
RESX |
30p MIPI-DSI FPC接口¶
PIN |
DevKit FPC CON PIN-Name |
Descriptions |
LCM PIN-Name |
---|---|---|---|
1 |
GND |
Power Supply Ground |
GND |
2 |
NC |
None connect |
NC |
3 |
NC |
None connect |
NC |
4 |
GND |
Power Supply Ground |
GND |
5 |
D1P |
MIPI data Lane 1 positive-end output pin |
D1P |
6 |
D1N |
MIPI data Lane 1 negative-end output pin |
D1N |
7 |
GND |
Power Supply Groud |
GND |
8 |
DCKP |
MIPI clock Lane positive-end output pin |
DCKP |
9 |
DCKN |
MIPI clock Lane negative-end output pin |
DCKN |
10 |
GND |
Power Supply Ground |
GND |
11 |
D0P |
MIPI data Lane 0 positive-end output pin |
D0P |
12 |
D0N |
MIPI data Lane 0 negative-end output pin |
D0N |
13 |
GND |
Power Supply Ground |
GND |
14 |
NC |
None connect |
NC |
15 |
NC |
None connect |
NC |
16 |
GND |
Power Supply Ground |
GND |
17 |
TE |
Tearing effect input |
TE |
18 |
LCD_RST |
LCD reset output Active low |
RESX |
19 |
1.8V |
I/O interface power supply,1.8V output |
IOVCC |
20 |
3.3V |
VCI interface power supply,3.3V output |
VCI |
21 |
3.3V |
TP power supply,3.3V output |
TP-VDD |
22 |
TP_INT |
TP Interrupt signal inout |
TP-INT |
23 |
TP_SDA |
TP I2C data signal |
TP-SDA |
24 |
TP_SCL |
TP I2C clock signal |
TP-SCL |
25 |
TP_RST |
TP Reset |
TP-RTN |
26 |
LEDK |
LED cathode |
LEDK |
27 |
LEDK |
LED cathode |
LEDK |
28 |
NC |
None connect |
NC |
29 |
LEDA |
LED anode |
LEDA |
30 |
LEDA |
LED anode |
LEDA |
LCM转接板信号连接¶
思澈科技多个系列的开发板,使用一套图形界面完美支持SPI(SPI、DSPI和QSPI)、8080、8bit并口墨水屏、JDI、RGB和DSI等常见接口类型的屏。
SPI、DSPI和QSPI接口屏¶
PIN |
DevKit FPC CON PIN-Name |
3W-SPI |
4W-SPI |
DSPI |
QSPI |
---|---|---|---|---|---|
1 |
GND |
GND |
GND |
GND |
GND |
2 |
LCD_RST |
RESX |
RESX |
RESX |
RESX |
3 |
BL_PWM |
BL |
BL |
BL |
BL |
4 |
TE |
NC |
NC |
NC |
TE |
5 |
QSPI_CS |
CSx |
CSx |
CSx |
CSx |
6 |
QSPI_CLK |
CLK |
CLK |
CLK |
CLK |
7 |
QSPI_D0 |
RDx |
RDx |
D0 |
D0 |
8 |
QSPI_D1 |
NC |
DCx |
D1 |
D1 |
9 |
QSPI_D2 |
NC |
NC |
NC |
D2 |
10 |
QSPI_D3 |
NC |
NC |
NC |
D3 |
11 |
3.3V |
VDD |
VDD |
VDD |
VDD |
PIN |
DevKit FPC CON PIN-Name |
3W-SPI |
4W-SPI |
DSPI |
QSPI |
---|---|---|---|---|---|
1 |
LEDK |
LEDK |
LEDK |
LEDK |
LEDK |
2 |
LEDA |
LEDA |
LEDA |
LEDA |
LEDA |
3 |
D2/DB0 |
NC |
NC |
NC |
D2 |
4 |
D3/DB1 |
NC |
NC |
NC |
D3 |
11 |
TE |
NC |
NC |
NC |
TE |
12 |
LCD_RST |
RESX |
RESX |
RESX |
RESX |
13 |
CLK |
CLK |
CLK |
CLK |
CLK |
14 |
D0/RD |
RDx |
RDx |
D0 |
D0 |
15 |
CS |
CSx |
CSx |
CSx |
CSx |
16 |
D1/DC |
NC |
DCx |
D1 |
D1 |
17 |
3.3V |
VDD |
VDD |
VDD |
VDD |
PIN |
56-LCD |
3W-SPI |
4W-SPI |
DSPI |
QSPI |
---|---|---|---|---|---|
1 |
5V |
5V |
5V |
5V |
5V |
2 |
5V |
5V |
5V |
5V |
5V |
11 |
GND |
GND |
GND |
GND |
GND |
15 |
G3 |
NC |
NC |
NC |
TE |
20 |
GND |
GND |
GND |
GND |
GND |
21 |
B0 |
CSx |
CSx |
CSx |
CSx |
22 |
B1 |
CLK |
CLK |
CLK |
CLK |
23 |
B2 |
RDx |
RDx |
D0 |
D0 |
25 |
B4 |
NC |
NC |
NC |
D3 |
26 |
B5 |
NC |
DCx |
D1 |
D1 |
27 |
B6 |
NC |
NC |
NC |
D2 |
29 |
GND |
GND |
GND |
GND |
GND |
40 |
LCD_RST |
RESX |
RESX |
RESX |
RESX |
PIN |
58-LCD |
3W-SPI |
4W-SPI |
DSPI |
QSPI |
---|---|---|---|---|---|
1 |
5V |
5V |
5V |
5V |
5V |
2 |
5V |
5V |
5V |
5V |
5V |
9 |
R6 |
NC |
NC |
NC |
TE |
10 |
R7 |
CSx |
CSx |
CSx |
CSx |
11 |
GND |
GND |
GND |
GND |
GND |
12 |
G0 |
NC |
NC |
NC |
D3 |
13 |
G1 |
CLK |
CLK |
CLK |
CLK |
14 |
G2 |
NC |
NC |
NC |
D2 |
15 |
G3 |
NC |
DCx |
D1 |
D1 |
16 |
G4 |
RDx |
RDx |
D0 |
D0 |
20 |
GND |
GND |
GND |
GND |
GND |
29 |
GND |
GND |
GND |
GND |
GND |
40 |
LCD_RST |
RESX |
RESX |
RESX |
RESX |
MCU-8080接口屏¶
8bit MCU-8080 只有22p和40p(56-DevKit-LCD)FPC接口支持,连接方式如下面2个表格。
PIN |
DevKit FPC CON PIN-Name |
Descriptions |
MCU-8080 |
---|---|---|---|
1 |
LEDK |
LED cathode |
LEDK |
2 |
LEDA |
LED anode |
LEDA |
3 |
D2/DB0 |
8080 data 0 |
DB0 |
4 |
D3/DB1 |
8080 data 1 |
DB1 |
5 |
DB2 |
8080 data 2 |
DB2 |
6 |
DB3 |
8080 data 3 |
DB3 |
7 |
DB4 |
8080 data 4 |
DB4 |
8 |
DB5 |
8080 data 5 |
DB5 |
9 |
DB6 |
8080 data 6 |
DB6 |
10 |
DB7 |
8080 data 7 |
DB7 |
11 |
TE |
Tearing effect input |
TE |
12 |
LCD_RST |
LCD reset output Active low |
RESX |
13 |
CLK |
Write enable output |
WRx |
14 |
D0/RD |
Read enable output |
RDx |
15 |
CS |
Chip select output |
CSx |
16 |
D1/DC |
Display data/command select output |
DCx |
17 |
3.3V |
DC 3.3V Power Supply |
VCI |
18 |
TP_INT |
TP Interrupt signal inout |
TP-INT |
19 |
TP_SDA |
TP I2C data signal |
TP-SDA |
20 |
TP_SCL |
TP I2C clock signal |
TP-SCL |
21 |
TP_RST |
TP Reset |
TP-RTN |
22 |
GND |
Power Supply Ground |
GND |
PIN |
DevKit FPC CON PIN-Name |
Descriptions |
MCU-8080 |
---|---|---|---|
1 |
5V |
DC 5V Power Supply |
DC5V |
2 |
5V |
DC 5V Power Supply |
DC5V |
11 |
GND |
Power Supply Ground |
GND |
12 |
G0 |
8080 data 2 |
DB2 |
13 |
G1 |
8080 data 4 |
DB4 |
14 |
G2 |
8080 data 6 |
DB6 |
15 |
G3 |
Tearing effect input |
TE |
16 |
G4 |
8080 data 7 |
DB7 |
17 |
G5 |
8080 data 3 |
DB3 |
18 |
G6 |
8080 data 5 |
DB5 |
20 |
GND |
Power Supply Ground |
GND |
21 |
B0 |
Chip select output |
CSx |
22 |
B1 |
Write enable output |
WRx |
23 |
B2 |
Read enable output |
RDx |
25 |
B4 |
8080 data 1 |
DB1 |
26 |
B5 |
Display data/command select output |
DCx |
27 |
B6 |
8080 data 0 |
DB0 |
29 |
GND |
Power Supply Ground |
GND |
40 |
LCD_RST |
LCD reset output Active low |
RESX |
8bit并口墨水屏接口¶
8bit并口墨水屏需要的IO接口较多,思澈开发板FPC屏幕接口无法满足IO数量要求。
详细的设计指南,请参考8bit并口墨水屏硬件设计指南。
JDI并行接口屏¶
JDI屏常见的接口有24p并口和10p串口,接口线序如下面2个表格。
PIN |
Signal |
Descriptions |
Connect to |
---|---|---|---|
1 |
LED Cathode 1 |
Power supply for the LED (Cathode) |
Onboard circuit |
2 |
NC |
NC |
NC |
3 |
VDD2 |
Power supply for the vertical driver and pixel memory |
Onboard circuit |
4 |
JDI_VST |
Start signal for the vertical driver |
MCU |
5 |
JDI_ENB |
Write enable signal for the pixel memory |
MCU |
6 |
FRP |
Liguid crystal driving signal (“Off” pixel) |
MCU |
7 |
VDD1 |
Power supply for the horizontal driver and pixel memory |
Onboard circuit |
8 |
JDI_HST |
Start signal for the horizontal driver |
MCU |
9 |
JDI_R1 |
Red image data (odd pixels) |
MCU |
10 |
JDI_G1 |
Green image data (odd pixels) |
MCU |
11 |
JDI_B1 |
Blue image data (odd pixels) |
MCU |
12 |
HOUT |
Output from the end of the horizontal shift register |
MCU |
13 |
VCOM |
Common electrode driving signal |
MCU |
14 |
JDI_B2 |
Blue image data (odd pixels) |
MCU |
15 |
JDI_G2 |
Green image data (odd pixels) |
MCU |
16 |
JDI_R2 |
Red image data (odd pixels) |
MCU |
17 |
JDI_HCK |
Shift clock for the horizontal driver |
MCU |
18 |
GND |
Ground |
GND |
19 |
XFRP |
Liguid crystal driving signal (“On” pixel) |
MCU |
20 |
JDI_XRST |
Reset signal for the horizontal and vertical driver |
MCU |
21 |
JDI_VCK |
Shift clock for the vertical driver |
MCU |
22 |
VOUT |
Output from the end of the vertical shift register |
MCU |
23 |
LED Anode |
Power supply for the LED (Anode) |
Onboard circuit |
24 |
LED Cathode 1 |
Power supply for the LED 2 (Cathode) |
Onboard circuit |
PIN |
Signal |
Descriptions |
Connect to |
---|---|---|---|
1 |
JDI_SCLK |
Serial clock signal |
MCU |
2 |
JDI_SI |
Serial data input signal |
MCU |
3 |
JDI_SCS |
Chip select signal |
MCU |
4 |
JDI_EXTCOMIN |
COM inversion polarity input |
MCU |
5 |
JDI_DISP |
Display ON/OFF switching signal |
MCU |
6 |
VDDA |
Power supply for analog |
Onboard circuit |
7 |
VDD1 |
Power supply for logic |
Onboard circuit |
8 |
EXTMODE |
COM inversion mode select terminal |
Onboard circuit |
9 |
VSS |
Logic ground |
Onboard circuit |
10 |
VSSA |
Analog ground |
Onboard circuit |
详细的设计指南,请参考JDI屏硬件设计指南。
RGB(MIPI-DPI)接口屏¶
只有SF32LB56-DevKit-LCD和SF32LB56-DevKit-LCD开发板支持RGB接口屏。开发板的40p FPC插座线序兼容正点原子线序,可以直接插上正点原子的RGB屏使用。
开发者可以参考上文定义的40p FPC座线序和正点原子RGB屏资料来制作显示转接板。
第三方RGB屏链接:
MIPI(MIPI-DSI)接口屏¶
如上文的30p FPC插座信号定义所示,思澈SF32LB58-DevKit-LCD开发板最高支持 2lane数据传输,最高支持1280*800分辨率的MIPI屏。
转接板信号连接可以参考上文的30p FPC座线序,其中开发板上已经集成了恒流WLED驱动源电路,背光LEDK和LEDA可以提供100mA的驱动电流,屏幕背光最高支持并行6路LED。可以根据屏幕具体的LED结构来调整开发板上的Rset电阻,来满足实际的驱动电流要求。
Important
开发板的IO是3.3V电平,如果LCD转接板上的驱动芯片的IO电平是1.8V,请使用Level shift芯片来转换电平。
QSPI、8080和RGB的数据和时钟线需要串接22~47欧姆的电阻如果。
-Nano和-Core开发板上I2C信号没有加上拉电阻,需要在屏转接板上加I2C上拉电阻。
转接板背光电路¶
TFT屏背光电路¶
TFT屏的背光一般由串并联的LED发光管组成,根据屏幕尺寸大小不同,背光的串并联LED数量也不同,一般裸屏规格书里有背光LED的组成介绍,以此来设计背光驱动电路。
Size |
LED Structure |
LED VF&IF |
LED drive circuit |
---|---|---|---|
1.3inch |
2 parallel |
VF=3.3V,IF=15*2mA |
3.3V DC drive |
2.4inch |
4 parallel |
VF=3.3V,IF=15*4mA |
3.3V DC drive |
2.8inch |
4 parallel |
VF=3.3V,IF=15*4mA |
3.3V DC drive |
3.5inch |
6 parallel |
VF=3.3V,IF=15*6mA |
3.3V DC drive |
4.2inch |
8 serial |
VF=25.6V,IF=15mA |
Boost WLED driver |
5.5inch |
2 serial *7 parallel |
VF=6.4V,IF=105mA |
Boost WLED driver |
7inch |
3 serial *6 parallel |
VF=9.6V,IF=90mA |
Boost WLED driver |
10.1inch |
4 serial *7 parallel |
VF=12.8V,IF=105mA |
Boost WLED driver |
采用1个LED并联方式的背光驱动电路,LEDA可以直接接3.3V电源,LEDK可以直接接GND。
有多个LED串联的背光驱动电路,常见的5V和3.3V不够VF电压的要求,只能通过升压的方式来驱动LED,推荐使用恒流LED驱动芯片来驱动背光LED。并联LED的通路数量 x 15mA及为屏幕背光的电流需求。如下图所示,Rset来设置IF驱动电流,芯片的FB一般为200mV,IF=VFB/Rset为驱动电流。

AMOLED屏背光电路¶
AMOLED是采用像素级自发光技术,没有像TFT屏一样的背光源,亮度调节一般是调节像素点的颜色,例如黑色为不发光,白色为最亮,所以无需专门提供PWM信号来调整背光亮度。
AMOLED屏一般自带PMIC芯片,给面板提供VGH、VGL和VCOM电压,屏驱芯片通过1W接口来调整相应的电压值。PMIC的供电范围一般支持2.7~5.5V,所以可以引开发板FPC接口上的5V或3.3V给屏上PMIC供电。

墨水屏背光电路¶
墨水屏的背光电路比较复杂,使用专用PMIC芯片来提供墨水屏各个电源的电压。
常用的PMIC电源芯片有TPS65185和SY7637A。
详细的设计指南,请参考8bit并口墨水屏硬件设计指南。
FPC软排线的选择¶
思澈开发板FPC插座采用的是上翻下接触类型,建议制作转接板时,转接板上面的FPC插座采用上翻-上下双侧接触类型。
推荐FPC插座:
转接板上采用上翻-上下双侧接触类型FPC插座,FPC软排线可以选择16p、22p、30p和40p,0.5mm间距的FPC软排线,排线接触点同面或异面的都可以。

Important
转接板设计时,注意FPC插座的1脚位置,如果转接板直接参考开发板原理图的线序和1脚位置,实际用软排线对接时就会造成信号交叉而无法使用。解决方法有:
修改转接板上的插座的PCB库的1脚位置,从相反方向开始命名管脚序号,原理图符合不变。
修改转接板上的插座的原理图符号库1的1脚位置,从相反方向开始命名管脚序号,PCB库不变。
思澈LCM模组¶
为了方便开发者使用思澈科技的开发板来调试显示功能,思澈科技推出多款LCM屏幕模组,包括QSPI、RGB和DSI接口。屏幕尺寸有1.85寸 AMOLED 390450 手表屏、4.3寸 TFT 800480显示屏、7寸 TFT 1024x600显示屏和8寸 TFT 1280x800显示屏。
1.85inch AMOLED Module¶
特性¶
尺寸:1.85inch 长方形圆角AMOLED手表屏,裸屏型号:ZC-A1D85W-010
分辨率:390x450
亮度:800 cd/m2
显示数据接口:QSPI
触摸数据接口:I2C
OLED Driver IC: CO5300AF-01
Power IC: BV6802W
TP IC: FT6146-M00
开发板支持列表¶
SF32LB52-DevKit-Nano
SF32LB52-DevKit-Core-****
SF32LB52-DevKit-ULP(立创.黄山派)
SF32LB52-DevKit-LCD
SF32LB56-DevKit-LCD
SF32LB58-DevKit-LCD
开发板和显示屏安装方式¶






4.3inch TFT Module¶
(敬请期待)
7inch TFT Module¶
(敬请期待)
8inch TFT Module¶
(敬请期待)