NJU6635 New Japan Radio Co.,Ltd, NJU6635 Datasheet - Page 19

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

(3-2)Initialization using the internal reset circuits
Entry Mode Set
Entry Mode Set
Display On/Off
Display On/Off
Function Set
Function Set
Function Set
Write data to the CG or DD RAM
Write data to the CG or DD RAM
Power On
Power On
Control
Control
a) 32-character 1-line in 8-bit operation Addressing Mode 1 (Using internal reset circuits).
b) 32-character 1-line in 4-bit operation Addressing Mode 1 (Using internal reset circuits).
and set the instruction.
and set the instruction.
be executed before the data input, as shown below.
unchanged, display data which are entered first can be output when the return home operation is
performed.
performed under 8-bit operation.
terminals DB
R/W and DB
the 4-bit operation mode, rewrite is required to set the instruction code in full. 32-character 1-line
in 4bit operation is shown as follows:
At the 32-character 1-line display, the Function set, On/Off Control and Entry Set Instruction must
Since the display shift operation changes only display position and the DD RAM contents are
In the 4-bit operation, the function set must be performed by the user programming.
When the power is turned on, 8-bit operation is selected automatically, therefore the first input is
7
0
RS R/W DB
RS R/W DB
RS R/W DB
RS R/W DB
RS R/W DB
RS R/W DB
RS R/W DB
0
0
0
to DB
to DB
0
0
0
0
0
0
0
3
4
0
0
0
0
0
0
0
0
0
0
, as shown below. Since one operation is completed by the two accesses in
are no connection. Therefore, same instruction must be rewritten on the RS,
0
0
0
0
0
0
0
1
0
0
7
7
7
7
7
7
7
DB
DB
DB
DB
DB
DB
DB
0
0
0
0
0
0
1
0
1
6
6
6
6
6
6
6
DB
DB
DB
DB
DB
DB
DB
In this operation, full instruction can not input because of
1
0
0
1
1
0
0
1
0
1
5
5
5
5
5
5
5
DB
DB
DB
DB
DB
DB
DB
1
0
0
0
0
0
0
0
0
0
4
4
4
4
4
4
4
DB
DB
0
DB
1
0
3
3
3
Initialized.
No display appears.
Set the 4-bit operation.
This step is executed in 8-bit mode set by
initialization.
Set the 4-bit operation /32-Character 1-Line
display,
Addressing Mode 1.
The 4-bit operation starts from this step.
Turns on display and cursor. Entire display
is in space mode by the initialization.
Example for set address increment and
cursor right shift when the data write to the
DD or CG RAM.
DB
DB
DB
1
1
2
2
2
DB
DB
DB
0
1
1
1
1
1
Pin
DB
DB
DB
0
0
0
0
0
0
configuration
Initialized.
No display appears.
Set
32-Character 1-Line display,
Pin configuration mode A,
Addressing Mode 1.
Turns on display and cursor.
Entire display is in space
mode by the initialization.
Example
increment and cursor right
shift when the data write to
the DD or CG RAM.
the
NJU6635
for
8-bit
mode
set
operation,
address
A,