NJU6635 New Japan Radio Co.,Ltd, NJU6635 Datasheet - Page 13

• Manufacturer Part Number: NJU6635
• Description: 16-character 2-line Dot Matrix Lcd Controller Driver
• Manufacturer: New Japan Radio Co.,Ltd

Note: The character pattern for character code (20)
(3-1) Description of instruction
a) Maker Test
b) Clear Display
pattern( Custom font ).
c) Return Home / Font Size Set
please pay attention to the output condition of Enable signal when the power turns on ).
into every DD RAM address, the DD RAM address 0 is set into the address counter and entry
mode is set an increment. If the cursor or blink are displayed, they are returned to the left end of
the LCD.
into DD RAM address,(00)
is executed, the DD RAM address 0 is set to address counter. Display is returned to the original
position if shifted, the cursor or blink is returned to the left end of the LCD. If the cursor or blink are
on the display, the DD RAM contents are not changed.
dots ) and “Return Home” function is operated. In this time, access from (10)
(4F)
display mode returns from double height to normal, the kept data in RAM displays again.
double height.
Code
Code
Code
All “0” code in 4-bit length is using device testing mode ( only for maker ).
Therefore, please avoid all “0” input or no meaning Enable signal input at data “0” ( Especially
All “0” code in 8-bit length is usable for NOP ( Not Operating instruction ).
Clear display instruction is executed when the code “1” is written into DB
In case of normal display mode, when this instruction is executed, the space code (20)
The S of entry mode and CG RAM data does not change.
In case of double height mode, when this instruction is executed, the space code (20)
Return home instruction is executed when the code “1” is written Into DB
The normal display mode is executed when the code “0” is written Into DB
The double height mode function is set by writing “1” Into DB
The character of DD RAM address, (00)
In case of no display, “clear display” should be operated before transition from normal mode to
The cursor size is also expanded to 5 x 2 dots.
Double height sized display function and Normal are not operated in the mean time.
The font in double height mode is some as normal.
H
of DD RAM address is not available but the data in RAM are kept. Therefore, when the
E
0
1
RS
RS
RS
0
0
0
Normal Display mode (Font Size : 5 x 8dots)
Double height sized Display mode (Font Size : 5 x 16 dots) in case of
DD RAM address : (00)
R/W
R/W
R/W
0
0
0
DB
DB
DB
0
0
0
7
7
7
H
to (0F)
DB
DB
DB
0
0
0
6
6
6
H
.
DB
DB
DB
0
0
0
H
5
5
5
to (0F)
DB
DB
DB
H
0
0
0
to (0F)
H
FUNCTION
4
4
4
H
must be blank code in the user-defined character
.
DB
DB
DB
0
0
0
H
3
3
3
, are expanded to double height size ( 5 x 16
DB
DB
DB
0
0
0
2
2
2
0
.
DB
DB
DB
0
0
1
1
1
1
DB
DB
DB
E
0
1
0
0
0
0
1
.
. When this Instruction
0
.
H
NJU6635
to (1F)
H
H
H
or (40)
is written
is written
H
to