RL028P2123-14A

Pin No.

Symbol

I/O

Description

1

LED_K

P

Backlight cathode

2~5

LED_A

P

Backlight anode

6~9

IM0~3

I

The MCU interface mode select.

10

/RESET

I

Reset pin. Initializes the LCM when low.

11

vs

Vertical (Frame) synchronizing input signal for RGB interface

If not used, please fix to the VDDI or DGND.

12

hs

Horizontal (Line) synchronizing input signal for RGB interface

If not used, please fix to VDDI or DGND.

13

dotclk

Dot clock signal for RGB interface operation

If not used, please fix this pin at VDDI or DGND.

14

de

Data enable signal for RGB interface operation

If not used, please fix this pin at VDDI or DGND

15~32

DB17~DB0

I

DB[17:0] are used as MCU parallel interface data bus & RGB interface data bus.

If not used, please fix this pin at VDDI or DGND

33

SDO

O

SPI interface output pin.

The data is output on the falling edge of the SCL signal.

If not used, let this pin open

34

SDI

I

When IM3: Low, SPI interface input/output pin.

When IM3: High, SPI interface input pin.

-The data is latched on the rising edge of the SCL signal.

If not used, please fix this pin at VDDI or DGND level

10

/RD

I

Read enable clock input pin

9

/WR

I

Write enable clock input pin

8

RS

I

Selects the register. Low : Index / status; High : Control

7

/CS

I

Chip select pin. Active: low

39

TE

O

Tearing effect output. If not used, please open this pin.

40~41

IOVCC

P

Digital IO Pad power supply

42

VCI

P

Analog power supply

43

GND

P

Power ground

44

CTP_SCK

I

I2C clock input

45

CTP_SDA

I

I2C data input and output

46

CTP_IRQ

I

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

47

CTP_RES

I

External Reset, Low is active

48~50

GND

P

Power ground