LC75829PE, 75829PW

No.A1462-7/22

Pin Functions

Symbol

Pin No.

Function

Active

I/O

Handling

when

unused

S1/P1 to S4/P4

S5 to S50

S52

1 to 4

5 to 50

55

Segment outputs for displaying the display data transferred by serial data input.

The S1/P1 to S4/P4 pins can be used as general-purpose output ports under serial

data control.

-

O

OPEN

COM1 to COM3

COM4/S51

54 to 52

51

Common driver outputs

The frame frequency is fo[Hz].

The COM4/S51 pin can be used as a segment output in 1/3 duty.

-

O

OPEN

S53/OSCI

60

Segment output. This pin can also be used as the external clock input pin when the

external clock operating mode is selected by control data.

-

I/O

OPEN

CE

62

H

I

CL

63

I

GND

DI

64

Serial data transfer inputs. Must be connected to the controller.

CE: Chip enable

CL: Synchronization clock

DI: Transfer data

-

I

INH

61

Display off control input

• INH = low (VSS) ...Display forced off

S1/P1 to S4/P4 = low (VSS)

(These pins are forcibly set to the general-purpose output port

function and held at the VSS level.)

S9 to S50, S52=low (VSS)

COM1 to COM3=low (VSS)

COM4/S51=low (VSS)

S53/OSCI=low (VSS)

(This pin is forcibly set to the segment output port function and

held at the VSS level.)

Stops the internal oscillator.

Inhibits external clock input.

• INH = high (VDD)...Display on

Enables the internal oscillator circuit.

(Internal oscillator operating mode)

Enables external clock input.

(External clock operating mode)

However, serial data transfer is possible when the display is forced off.

L

I

GND

VDD1

57

Used to apply the LCD drive 2/3 bias voltage externally.

-

I

OPEN

VDD2

58

Used to apply the LCD drive 1/3 bias voltage externally.

-

I

OPEN

VDD

56

Power supply pin. A power voltage of 4.5 to 6.0V must be applied to this pin.

-

-

-

VSS

59

Ground pin. Must be connected to ground.

-

-

-