LC79430KNE

No. A2123-5/7

Pin Function

Pin No

Symbol

I/O

Function

90

VDD

92

VSS

84

VEE

Supply

VDD-VSS : Logic power supply

VDD-VEE : LCD drive circuit power supply

87

V1

86

V2

85

V5

Supply

LCD drive level power supply

V1, VEE : Selected level

V2, V5 : Unselected level

96

CP

I

Bidirectional shift register shift clock (falling edge trigger)

98

82

91

95

97

DIO1

DIO80

RS/LS

MODE

DMIN

I/O

I/O

I

I

I

MODE

RS/LS

Data Transfer Direction

DIO1

DIO80

DMIN

L (Shift right)

O1 → O80

IN

OUT

*

L

(Single)

H (Shift left)

O80 → O1

OUT

IN

*

O1 → O40

L (Shift right)

O41 → O80

IN

OUT

IN

O80 → O41

H

(Dual)

H (Shift left)

O40 → O1

OUT

IN

IN

* Don’t care (May be set to either “H” or “L”)

94

M

I

LCD drive output alternation signal

89

DISPOFF

I

O1 to O80 output controlling input pins.

1

80

O1

O80

O

LCD drive outputs

The output levels are determined by the combination of the output the data,

The M signal, and the DISPOFF pin as shown in the table.

M

Data

DISPOFF

Output

L

L

H

V2

L

H

H

VEE

H

L

H

V5

H

H

H

V1

*

*

L

V1

* Don’t care (May be set to either “H” or “L”)

81

83

88

93

99

100

NC

-

Must be left open.