NJU6631ACH Ver la hoja de datos (PDF) - Japan Radio Corporation
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NJU6631ACH Datasheet PDF : 32 Pages
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NJU6631A
(e)Display On/Off Control
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Code 0 0 0 0 0 0 1 D C B
Display On/Off control instruction which controls the display On/Off, the cursor On/Off and the cursor
position character blink, is executed when the code "1" is written into DB3 and the codes of (D), (C) and (B)
are written into DB2(D), DB1(C) and DB0(B), as shown below.
D
Function
1
Display On.
0
Display Off. In this mode, the display data remains in the DD RAM so that it is
retrieved immediately on the display when the D change to 1.
C
Function
1
Cursor On. The cursor is displayed by 5 dots on the 8th line.
0
Cursor Off. Even if the display data write, the I/D etc does not change.
B
Function
The cursor position character is blinking. Blinking rate is 303.4ms at or fOSC=270kHz.
1
The blink is displayed alternatively with all on (it means all black) and characters
display. The cursor and the blink can be displayed simultaneously.
0
The character does not blink.
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↑
Cursor
Character Font 5 x 7 dots
(1) Cursor display example
□■■■□
■□□□■
■□□□■
■□□□■
■■■■■
■□□□■
■□□□■
□□□□□
■■■■■
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Alternating display
(2) Blink display example
(ｆ) Cursor / Display Shift
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Code 0 0 0 0 0 1 S/C R/L * * * = Don’t Care
The Cursor/Display shift instruction shifts the cursor position or display to the right or left without writing or
reading display data. This function is used to correct or search the display.
The contents of address counter (AC) does not change by operation of the display shift only.
This instruction is executed when the code "1" is written into DB4 and the codes of (S/C) and (R/L) are
written into DB3(S/C) and DB2(R/L), as shown below.
S/C
R/L
Function
0
0
Shifts the cursor position to the left. ((AC) is decremented by 1)
0
1
Shifts the cursor position to the right. ((AC) is incremented by 1)
1
0
Shifts the entire display to the left and the cursor follows it.
1
1
Shifts the entire display to the right and the cursor follows it.
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