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ML9059E

132-Channel LCD Driver with Built-in RAM for LCD Dot Matrix Displays

LAPIS Semiconductor Co., Ltd. 

LAPIS Semiconductor

FEDL9059E-01

ML9059E

Number

Function Pin name of pins I/O

VRS

2

—

VOUT

2

I/O

V1

V2

V3

10

I/O

V4

V5

Power

supply

circuit

VR

2

I

VS1–

3

O

VS2–

3

O

VC3+

3

O

VC4+

3

O

Description

These are the test pins for the LCD power supply voltage adjustment

circuit. Leave these pins open.

These are the output pins during voltage multiplication. Connect a

capacitor between these pins and VSS.

These are the multiple level power supply pins for the LCD power

supply. The voltages specified for the LCD cells are applied to these

pins after resistor network voltage division or after impedance

transformation using operational amplifiers. The voltages are

specified taking VSS as the reference, and the following relationship

should be maintained among them.

V1  V2  V3  V4  V5  VSS

Master operation: When the power supply is ON, the following

voltages are applied to V2 to V5 from the built-in power supply

circuit. The selection of voltages is determined by the LCD bias set

command.

ML9059E

V2

7/8  V1

5/6  V1

V3

6/8  V1

4/6  V1

V4

2/8  V1

2/6  V1

V5

1/8  V1

1/6  V1

Voltage adjustment pins. Voltages between V1 and VSS are applied

using a resistance voltage divider.

These pins are effective only when the internal resistors for voltage

V1 adjustment are not used (IRS = “L”).

Do not use these pins when the internal resistors for voltage V1

adjustment are used (IRS = “H”).

These are the pins for connecting the negative side of the capacitors

for voltage multiplication.

Connect capacitors between these pins and VC3+, VC5+.

These are the pins for connecting the negative side of the capacitors

for voltage multiplication.

Connect capacitors between these pins and VC4+, VC6+.

These are the input pins for voltage multiplication.

Apply the voltage equal to VIN to the pins or leave them open,

depending on voltage multiplication values.

These are the pins for connecting the positive side of the capacitors

for voltage multiplication.

Connect capacitors between VS2– and these pins.

For 3-time voltage multiplication, the pins are configured as inputs

for voltage multiplication.

18/72

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