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

Número de pieza

componentes Descripción

Fabricante

NJU6475B

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

Japan Radio Corporation  

NJU6475B

(1-5) Character Generator RAM (CG RAM)

The Character Generator RAM stores any kinds of character pattern in 5 x 8 dots written by the user

program to display user's original character pattern. The CG RAM can store 4 kinds of character in 5 x 8 dots

mode.

To display user's original character pattern stored in the CG RAM, the address data (00)H -(03)H should

be written to the DD RAM as shown in Table-3.

<Table-3> Correspondence of CG RAM address, DD RAM character code

and CG RAM character pattern (5 x 8 dots)

Character Code

(DD RAM Data)

76543210

Upper

Bits

Lower

Bits

00000000

00000001

CG RAM Address

76543 210

Upper

01000

01001

Lower

000

001

010

011

100

101

110

111

000

001

010

011

100

101

110

111

000

001

Character Pattern

(CG RAM Data)

43210

Upper

Lower

11110

10001

10001

11110

10100

10010

10001

00000

10001

01010

11111

00100

11111

00100

00100

00000

Character Pattern

Example (1)

Cursor Position

Character Pattern

Example (2)

Cursor Position

00000011

01011

100

101

110

111

Notes : 1. Character code bit 0,1 correspond to the CG RAM address bit 3,4 (2bits ; 4patterns).

2. CG RAM address 0 to 2 designate character pattern line position. The 8th line should be "0".

If there is "1" in the 8th line, but bit "1" is always displayed on the cursor position regardless of cursor

existence.

3. Row position character pattern correspond to CG RAM data bits 0 to 4 are shown above.

4. CG RAM character patterns are selected when character code bits 2 to 7 are all "0" and these are

addressed by character code bits "0" and "1".

5. "1" for CG RAM data corresponds to display on and "0" to display off.

Share Link: