RL040C4021-42B

Pin No.

Symbol

I/O

Description

Note

1

VLED+

P

Backlight LED Anode

2~3

VLED-

P

Backlight LED Cathode

4

GND

P

Power ground pin.

5

VCI

P

Power supply to interface pins

6

RESET

I

- The external reset input

- Initializes the chip with a low input. Be sure to execute a power-on reset after supplying power.

7~8

NC

-

No Connect.

9

SDA

I

Serial data input/output bidirectional pin for SPI Interface.

10

SCL

I

 Serial clock input for SPI interface.

11

CS

I

- A chip select signal

 Low: the chip is selected and accessible

High: the chip is not selected and not accessible

12

PLCK

I

Dot Data Clock.

13

DE

I

Data enable signal in DPI interface mode.

14

VSYNC

I

Vertical sync signal in DPI interface mode.

15

HSYNC

I

Horizontal sync signal in DPI interface mode.

16~21

B0~B5

I

Blue Data Bit0~ Blue Data Bit5

22~27

G0~G7

I

Green Data Bit0~ Green Data Bit5

28~33

R0~R5

I

Red Data Bit0~ Red Data Bit5

34

GND

P

Power ground pin.

35

CTP_INT

I

Interrupt request to the host, or Wakeup request from the host.

36

CTP_SDA

I/O

I2C data input and output

37

CTP_SCL

I

I2C clock input

38

CTP_RST

I

External Reset, Low is active

39

VCC_3.3V

P

power supply

40

GND

P

Power ground pin.