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NJU6631ACH

16-CHARACTER 1-LINE DOT MATRIX LCD CONTROLLER DRIVER

Japan Radio Corporation  

NJU6631A

(1-4-1) 16-character 1-line Display

The NJU6631A has two kinds of addressing mode called "Addressing mode 1" and "Addressing mode 2"

which is determined by the Function Set Instruction (A= 0 and 1).

"Addressing mode 1" is using consecutive address of (00)H through (0F)H for front half 8-character and last

half 8-character. "Addressing mode 2" is not using consecutive address likes as (00)H through (07)H and (40)H

through (47)H for front half 8-character and last half 8-character respectively.

16-character 1-line and 8 character 2-line are also determined by the Function Set Instruction (M1= 0 and 1).

<Addressing mode 1: A=0, M1=0>

-The relation between DD RAM address and display position on the LCD is shown below.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ←Display position

00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F ←DD RAM address

COM1∼COM8

COM9∼COM16

(Hexadecimal)

When the display shift is performed, the DD RAM address changes as follows:

(Left Shift Display)

(00)← 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 00

(Right Shift Display)

0F 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E →(0F)

<Addressing mode 2: A=1, M1=0>

-The relation between DD RAM address and display position on the LCD is shown below.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ←Display position

00 01 02 03 04 05 06 07 40 41 42 43 44 45 46 47 ←DD RAM address

COM1∼COM8

COM9∼COM16

(Hexadecimal)

When the display shift is performed, the DD RAM address changes as follows:

(Left Shift Display)

(00)← 01 02 03 04 05 06 07 40 41 42 43 44 45 46 47 00

(Right Shift Display)

47 00 01 02 03 04 05 06 07 40 41 42 43 44 45 46 →(47)

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