NJU6543 データシートの表示（PDF） - Japan Radio Corporation

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NJU6543

1/2 1/3 1/4 Duty LCD Driver

Japan Radio Corporation  

NJU6543 Preliminary

(6) Power ON Reset

After power ON, NJU6543 is initialized to the following values:

• Address counter

(C1, C0, S3, S2, S1, S0)=(0, 0, 0, 0, 0, 0)

• Display data register

all "0"

• Duty ratio

1/4 duty

• Bias ratio

1/3 bias

• Oscillator selection

External resistor and capacitor

• Driving waveform

A waveform

• E.V.R. resister

• Segment/General purpose port:

V0(E2, E1, E0)=(0, 0, 0)

Segment output(SEG125,SEG126, SEG127, SEG128)

• Display

OFF

(7) Sequence of Initialization

(7-1)1/4 duty,1/3 bias,SEG125 ~ SEG128 used as SEG drivers, external resister and capacitor,

A waveform,E.V.R. V0(E2, E1, E0)=(0, 0, 0) data written in from COM1.

Power on

Set Command Resister2

Set Command Register1

Set output address

D7 D6 D5 D4 D3 D2 D1 D0 External R&C,A waveform

1 1 0 0 0 0 0 0 V0(E2, E1, E0)=(0, 0, 0)

Pixels off

D7 D6 D5 D4 D3 D2 D1 D0 1/4 duty

1 0 0 0 0 0 0 0 1/3 Bias

Segment port

D7 D6 D5 D4 D3 D2 D1 D0

0 1 0 0 0 0 0 0 COM driver address =00

SEG driver address=0000

Display data written in

Set Command Register2

D7 D6 D5 D4 D3 D2 D1 D0

1 1 0 0 0 0 0 1 Pixels on

(7-2)1/3 duty,1/2 bias,SEG128 used as general purpose ports, external oscillation signal input,

B waveform,E.V.R. V0(E2, E1, E0)=(1, 1, 1) data written in from COM2.

Power on

Set Command Resister2

Set Command Register1

Set output address

D7 D6 D5 D4 D3 D2 D1 D0 External signal, B waveform

1 1 1 1 1 1 1 0 V0(E2, E1, E0)=(1, 1, 1)

Pixels off

D7 D6 D5 D4 D3 D2 D1 D0 1/3 duty

1 0 0 1 1 0 0 1 1/2 Bias

SEG128 general ports

D7 D6 D5 D4 D3 D2 D1 D0

0 1 0 1 0 0 0 0 COM driver address =01

SEG driver address=0000

Display data written in

Set Command Register2

D7 D6 D5 D4 D3 D2 D1 D0

1 1 1 1 1 1 1 1 Pixels on

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Ver.2008-11-28

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