NJU6538 View Datasheet(PDF) - Japan Radio Corporation

Part Name

Description

Manufacturer

NJU6538

1/8, 1/9, 1/10 Duty BITMAP LCD DRIVER with KEY SCAN

Japan Radio Corporation  

NJU6538

(7) LCD panel drive

(7-1) LCD driving voltage generation circuit

LCD driving voltage generation circuit generates LCD driving bias voltages VLCD2, V0, V1 and V2. It

adjusts the voltage by 8 steps electrical volume from VLCD1 and allots the voltage to VLCD2, V0, V1 and V2

by resistor-voltage-dividing as shown in below.

VLCD1, VLCD2, V0, V1 and V2 terminals requires external capacitors for bias voltage stabilization

for display quality. These values of capacitors should be fixed in accordance with evaluation in the

application.

Power

Supply

VLCD

Duty ratio

Bias

1/8,1/9,1/10

1/4

VLCD2-VSS

VLCD1

VLCD2

V0

V1

V2

+

VSS

+

+

+

+

Internal NJU6538

E.V.R. (16-steps)

10kΩ (Note 1)

10kΩ (Note 1)

10kΩ (Note 1)

10kΩ (Note 1)

VLCD

10kΩ (Note 1)

Note 1 : Resistor is typical value.

- 22 -

Ver.2003-05-09

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