// Video Connectors

TTL LCD 40-Pin (Parallel RGB)

Parallel RGB (TTL) LCD interface uses 18-bit or 24-bit direct digital connections for small TFT displays on embedded systems. Common on 3.5-7 inch displays for Raspberry Pi, Arduino shields, and STM32 projects.

// Specifications

Standard

Parallel RGB TTL interface

Pin Count

Data Width

18-bit or 24-bit RGB

Connector

FPC 0.5mm pitch or 2.54mm header

Speed

Up to 60fps at standard resolutions

Use Case

Small TFT displays, embedded UI, Raspberry Pi HATs

// Pin Reference Table

Pin	Name	Function	Type
1	GND	Ground	GND
2	VCC	Panel power 3.3V	PWR
3	R7	Red data bit 7 MSB	I/O
4	R6	Red data bit 6	I/O
5	R5	Red data bit 5	I/O
6	R4	Red data bit 4	I/O
7	R3	Red data bit 3	I/O
8	G7	Green data bit 7	I/O
9	G6	Green data bit 6	I/O
10	G5	Green data bit 5	I/O
11	G4	Green data bit 4	I/O
12	G3	Green data bit 3	I/O
13	B7	Blue data bit 7	I/O
14	B6	Blue data bit 6	I/O
15	B5	Blue data bit 5	I/O
16	B4	Blue data bit 4	I/O
17	B3	Blue data bit 3	I/O
18	GND	Ground	GND
19	VSYNC	Vertical sync	I/O
20	HSYNC	Horizontal sync	I/O
21	DOTCLK	Pixel clock	I/O
22	DEN	Data enable	I/O
23	DISP	Display enable	I/O
24	GND	Ground	GND
25	NC	No connect	I/O
26	BL+	Backlight anode	PWR
27	BL-	Backlight cathode	GND
28	TP_CLK	Touchpanel SPI clock	BUS
29	TP_CS	Touchpanel chip select	BUS
30	TP_MOSI	Touchpanel data in	BUS
31	TP_MISO	Touchpanel data out	BUS
32	TP_IRQ	Touchpanel interrupt	I/O
33	GND	Ground	GND
34	RST	Display reset active low	I/O
35	SCL	I2C clock	BUS
36	SDA	I2C data	BUS
37	GND	Ground	GND
38	GND	Ground	GND
39	GND	Ground	GND
40	GND	Ground	GND