ML9090A View Datasheet(PDF) - Oki Electric Industry

Part Name

Description

Manufacturer

ML9090A

LCD Driver with Key Scanner and RAM

Oki Electric Industry 

1Semiconductor

FEDL9090A-01

ML9090A-01, -02

• VS1

Voltage doubler voltage output pin. This pin outputs the doubled voltage that has been input to VIN. To increase

stability of the power supply, connect a 4.7 µF capacitor between this pin and VSS. When using the doubled voltage,

connect this pin and VS2.

• VS2

Voltage multiplier voltage output pin. Voltage multiplied by the factor specified by the DT pin setting is output

from this pin. When the voltage tripler is used, to increase stability of the power supply, connect a 4.7 µF capacitor

between this pin and VSS. When using the voltage doubler, connect this pin and VS1.

• VIN

Voltage multiplier voltage input pin. The doubled or tripled voltage input to this pin is output from VS1 or VS2.

• V2, V3A, V3B

LCD bias pins for segment drivers. These pins are connected to internal bias dividing resistors. When using the

ML9090A-01 (at 1/4 bias), connect V2 and V3A pins, and leave V3B unconnected (open). When using the

ML9090A-02 (at 1/5 bias), connect V3A and V3B pins, and leave V2 unconnected (open).

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