NJU6475B 查看數據表（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

(1-3-1) The relation between DD RAM address and display position on the LCD

-12-Characters 4-Line Display

123

4567

8 9 10 11 12

1st Line 00 01 02 03 04 05 06 07 08 09 0A 0B

2nd Line 10 11 12 13 14 15 16 17 18 19 1A 1B

3rd Line 20 21 22 23 24 25 26 27 28 29 2A 2B

4th Line 30 31 32 33 34 35 36 37 38 39 3A 3B

Display Position

DD RAM Address

(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 00

(10) 11 12 13 14 15 16 17 18 19 1A 1B 10

(20) 21 22 23 24 25 26 27 28 29 2A 2B 20

(30) 31 32 33 34 35 36 37 38 39 3A 3B 30

[Right shift display]

0B 00 01 02 03 04 05 06 07 08 09 0A (0B)

1B 10 11 12 13 14 15 16 17 18 19 1A (1B)

2B 20 21 22 23 24 25 26 27 28 29 2A (2B)

3B 30 31 32 33 34 35 36 37 38 39 3A (3B)

(1-4) Character Generator ROM (CG ROM)

The Character Generator ROM (CG ROM) stores 5 x 8 dots character pattern represented in 8-bit character

code. The capacity is up to 252 kinds of 5 x 8 dots character pattern.

The correspondence between character code and standard character pattern of NJU6475B is shown in table 2.

User defined character patterns (Custom Font) are also available by mask option. (in this case, the address

(20)H are using for "Space Pattern".)

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