NJU6475B Ver la hoja de datos (PDF) - Japan Radio Corporation

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NJU6475B

12-Character 4-Line Dot Matrix Low Power LCD Controller Driver with key Scan Function

Japan Radio Corporation  

NJU6475B

(g) Function Set

RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

Code 0 0 0

01*

*

*

* PD *= Don't Care

Function set instruction which sets the interface data length and power down is executed, when the code

"1" is written into DB5 and (PD) is written into DB0, as shown below.

When the power down mode is set, the display turns off automatically. Afterward, when the power down

mode is reset, the display is off continuously.

The display appears by the display on instruction.

PD

Function

1 Power down mode off (Normal operation)

0 Power down mode on (the display goes to off automatically.)

(h) Set Electronic Volume Register

RS

Code 0

R/W

0

DB7 DB6 DB5 DB4

0

1*

*

Higher order bit

DB3 DB2 DB1 DB0

C3

C2

C1

C0

Lower order bit

*= Don't Care

Contrast Control instruction which adjusts the contrast of LCD, is executed when the code "1"

into DB6 and the codes of C0 to C3 are written into DB0 to DB3 as shown below.

The contrast of LCD can be adjusted one of 16 voltage stage by setting 4 bit register.

Set the binary code "0000" when contrast control unused.

is written

C3

C2

C1

C0

0

0

0

0

:

:

1

1

1

1

VLCD

low

VLCD = VDD - V5

high

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