NJU6625 New Japan Radio Co.,Ltd, NJU6625 Datasheet - Page 7

• Manufacturer Part Number: NJU6625
• Description: Nju6625 12character 1-line Dot Matrix Lcd Controller Driver With Smooth Scroll Function
• Manufacturer: New Japan Radio Co.,Ltd

Ver.2008-03-21
Note) 1. Character code bit 0 to 4 correspond to the CG RAM address bit 3 to 7 (5bits:32 patterns).
(1-5) Character Generator RAM (CG RAM)
by the user program to display user's o riginal character pattern. The CG RAM can store 32 kind of
character in 5 x 7 dots mode.
be written to the DD RAM as shown in Table 1.
5. "1" for CG RAM data corresponds to display On and "0" to display Off.
2. CG RAM address 0 to 2 designate character pattern line position. The 8th line is Don't care line.
3. Character pattern row position correspond to the CG RAM data bits 0 to 4 are shown above.
4. CG RAM character patterns are selected when character code of DD RAM bits 5 to 7 are all "0" and
The character generator RAM (CG RAM) can store any kind of character pattern in 5 x 7 dots written
To display user's original character pattern stored in the CG RAM, the address data (00)
Table 2. shows the correspondence among the character pattern, CG RAM address and Data
In case of input CG RAM data continuously, invalid address are Cursor position automatically.
these are addressed by character code bits 0 and 1.
* Don’t Care
Upper bit
Character Code
0 0 0 1 1 1 1 1
(DD RAM Data)
7 6 5 4 3 2 1 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 1
Table 2. Correspondence of CG RAM address, DD RAM character code
Ÿ
Ÿ
Ÿ
Ÿ
Ÿ
Lower bit
Preliminary
Upper bit
CG RAM Address
0 0 0 0 0
0 0 0 0 1
1 1 1 1 1
7 6 5 4 3 2 1 0
Ÿ
Ÿ
Ÿ
Ÿ
Ÿ
Lower bit
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
0 0 0
0 0 1
1 0 0
1 0 1
1 1 0
1 1 1
and CG RAM character pattern( 5 x 7 dots )
Ÿ
Ÿ
Ÿ
Ÿ
Ÿ
(CG RAM Data)
Upper
4 3 2 1 0
Character
bit
1 1 1 1
1
1
1 1 1 1
1
1
1
* * * * *
1
0
1 1 1 1 1
0 0
1 1 1 1 1
0 0
0 0
* * * * *
Pattern
0 0 0
0 0 0
0
0 0
0 0 0
0 0 0
1
1
0
1
1
1
Ÿ
Ÿ
Ÿ
Ÿ
Ÿ
0 0
1
1
0 0
0 0
0 0
Lower
0
1
1
0
0
1
1
0
bit
Character Pattern
Example (1)
Character Pattern
Example (2)
Character Pattern
Example (32)
NJU6625
H
-(1F)
H
should
- 7 -