Ver1.1

9

LD3003

128 Segment LCD Controller and Driver

LD3003

PIN DISCREPTION

Pin Name

Pin NO

(52MQFP)

Functions

I/O

Handling

when

unused

SEG32 to

SEG1

1 to 13

15 to 19

22 to 25

27 to 36

Segment outputs for displaying the display data transferred by

serial data input.

O

Open

COM4

to

COM1

45

to

48

Common driver outputs.

The frame frequency fO is given by: fO = 100 Hz at fosc=100KHz.

O

Open

OSC1

51

Oscillator input pin. Connected resistor with OSC2 pin.

I

GND

OSC2

50

Oscillator output pin. Connected resistor with OSC1 pin.

O

Open

DCLK

DIN

ENB

38

39

41

Synchronization clock input pin.

Transfer data input pin.

These pins are connected to the microcontroller.

I

GND

VLCD

20

Used to apply the LCD drive voltage externally.

I

Open

VDD

49

Logic block power supply.

Provide a voltage in the range 2.7 to 5.5 V.

-

-

NC

14

26

37

40

42

43

44

52

No connection pins

-

Open

VSS

21

Ground pin. Connect to ground.

-

-