Pin Functions

Note: The LC75833JE does not have the S12, S23, S24, S35 output pins.

No. 5580-6/19

LC75833E, 75833W, 75833JE

CE: Chip enable

CL:

Synchronization clock

DI:

Transfer data

H

—

S1/P1 to

S8/P8

S9 to S35

Pin

1 to 8

9 to 35

LC75833E,

75833W

LC75833JE

1 to 8

9 to 31

—

O

Open

Segment outputs for displaying the display data transferred by serial data

input. The pins S1/P1 to S8/P8 can be used as general-purpose output ports

when so set up by the control data.

COM1

COM2

COM3

36

37

38

32

33

34

—

O

Open

Common driver outputs.

OSC

44

40

CE

CL

DI

46

47

48

42

43

44

Serial data transfer inputs. These

pins are connected to the control

microprocessor.

—

I/O

I

GND

Oscillator connection

An oscillator circuit is formed by connecting an external resistor and capacitor

to this pin.

41

37

—

I

Open

Used to apply the LCD drive 2/3-bias voltage externally. This pin must be

connected to VLCD2 when 1/2-bias drive is used.

42

38

—

I

Open

Used to apply the LCD drive 1/3-bias voltage externally. This pin must be

connected to VLCD1 when 1/2-bias drive is used.

39

35

—

—

—

Logic block power supply. Provide a voltage in the range 2.7 to 6.0 V.

40

36

—

—

—

LCD driver block power supply. Provide a voltage in the range 2.7 to 6.0 V.

43

39

—

—

—

Ground pin. Connect to ground.

INH

45

41

L

I

GND

Display off control input

S1/P1 to S8/P8 = Low

(These pins are forcibly set to the segment output port

Note that serial data transfers can be performed when the

display is forced off by this pin.

Active

I/O

Handling

when unused

Functions

Pin No.