NJU6635CH 데이터 시트보기 (PDF) - Japan Radio Corporation
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NJU6635CH Datasheet PDF : 33 Pages
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NJU6635
(3-2)Initialization using the internal reset circuits
a) 32-character 1-line in 8-bit operation Addressing Mode 1 (Using internal reset circuits).
At the 32-character 1-line display, the Function set, On/Off Control and Entry Set Instruction must
be executed before the data input, as shown below.
Since the display shift operation changes only display position and the DD RAM contents are
unchanged, display data which are entered first can be output when the return home operation is
performed.
Power On
Initialized.
No display appears.
Function Set
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 1 10 ∗ 0 0
Set the 8-bit operation,
32-Character 1-Line display,
Pin configuration mode A,
Addressing Mode 1.
Display On/Off
Control
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 00001110
Turns on display and cursor.
Entire display is in space
mode by the initialization.
Entry Mode Set
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 00000110
Write data to the CG or DD RAM
and set the instruction.
Example for set address
increment and cursor right
shift when the data write to
the DD or CG RAM.
b) 32-character 1-line in 4-bit operation Addressing Mode 1 (Using internal reset circuits).
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
performed under 8-bit operation. In this operation, full instruction can not input because of
terminals DB0 to DB3 are no connection. Therefore, same instruction must be rewritten on the RS,
R/W and DB7 to DB4, as shown below. Since one operation is completed by the two accesses in
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:
Power On
Function Set
Function Set
Display On/Off
Control
RS R/W DB7 DB6 DB5 DB4
0 0 0010
RS R/W DB7 DB6 DB5 DB4
0 0 0010
0 0 0∗00
RS R/W DB7 DB6 DB5 DB4
0 0 0000
0 0 1110
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, Pin configuration mode A,
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.
Entry Mode Set
RS R/W DB7 DB6 DB5 DB4
0 0 0000
0 0 0110
Write data to the CG or DD RAM
and set the instruction.
Example for set address increment and
cursor right shift when the data write to the
DD or CG RAM.
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