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CU40045-UW1J

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CU40045-UW1J
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9.2 Display Clear
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 0 0 0 1 01H
RS=0
This instruction
1. Fills all locations in the display data (DD) RAM with 20H (Blank character).
2. Clears the contents of the address counter to 0H.
3. Sets the display for zero character shift.
4. Sets the address counter to point to the DD RAM.
5. If the cursor is displayed, the cursor moves to the left most character in the top line
(line 1 ).
6. Sets the address counter to increment on each access of DD RAM or CG RAM.
9.3 Cursor Home
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 0 0 1
*
02H to 03H
RS=0
*: don't care
This instruction
1. Clears the contents of the address counter to 0H.
2. Sets the address counter to point to the DDRAM.
3. Sets the display for zero character shift.
4. If the cursor is displayed, moves the left most character in the top line (line 1).
9.4 Entry Mode Set
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 0 1 I/D S 04H to 07H
RS=0
The I/D bit selects the way in which the contents of the address counter are modified after every
access to DDRAM or CGRAM.
I/D=1: The address counter is increment.
I/D=0: The address counter is decrement.
The S bit enables display shifts instead of cursor shift, after each write or read to the DDRAM.
S=1: Display shift enabled.
S=0: Cursor shift enabled.
The direction in which the display is shifted is opposite in sense to that of the cursor. For
example if S=0 and I/D=1, the cursor would shift one character to the right after a CPU writes
to DD RAM. However if S=1 and I/D=1, the display would shift one character to the left and
the cursor would maintain its position on the panel.
CU40045-UW1J
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The cursor will already be shifted in the direction selected by I/D during reads of the DD RAM,
irrespective of the value of S. Similarly reading and writing the CG RAM always shifts the
cursor. Also both lines are shifted simultaneously.
Cursor move and Display shift by the "Entry Mode Set"
I/D S After writing DD RAM data After reading DD RAM data
0 0
The cursor moves one character to
the left.
The cursor moves one character to
the left.
1 0
The cursor moves one character to
the right.
The cursor moves one character to
the right.
0 1
The display shifts one character to
the right without cursor's move.
The cursor moves one character to
the left.
1 1
The display shifts one character to
the left without cursor's move.
The cursor moves one character to
the right.
9.5 Display ON/OFF
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 1 D C B 08H to 0FH
RS=0
This instruction controls various features of the display.
The D bit turns the entire display on or off.
D＝1: Display on
D＝0: Display off
Note: Power supply can be OFF as for power saving by using this command. Display ON or OFF and Power
Supply OFF are applied by combinations of command for Controller 1 and 2 as follows.
Display ON/OFF
Controller1 Controller2
Display Power Supply
0 1 Upper 2lines OFF ON
1 0 All Dot OFF ON
0 0 All Dot OFF OFF
The C bit turns the cursor on or off.
C=1: Cursor on
C=0: Cursor off
The B bit enables blinking of the character the cursor coincides with.
B=1: Blinking on
B=0: Blinking off
Blinking is achieved by alternating between a normal and all on display of a character.
The cursor blinks with a frequency of about 0.6 Hz and DUTY 50%.
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9.6 Cursor/Display Shift
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 1 S/C R/L
**
10H to 1FH
RS=0
*: don't care
This instruction shifts the display and/or moves the cursor, on character to either left or right,
without neither reading nor writing DD RAM.
The S/C bit selects movement of the cursor or movement of both the cursor and the display.
S/C=1: Shift both cursor and display.
S/C=0: Shift cursor only.
The R/L bit selects left ward or right ward movement of the display and/or cursor.
R/L=1: Shift one character right.
R/L=0: Shift one character left.
Cursor move and Display shift by the "Cursor/Display Shift"
S/C R/L Cursor shift Display shift
0 0 Move one character to the left No shift
0 1 Move one character to the right No shift
1 0
Shift one character to left with
display
Shift one character to the left
1 1
Shift one character to right with
display
Shift one character to the right
9.7 Function Set
This command sets width of data bus line by itself, and sets screen brightness by following one
byte data.
9.7.1 Function Set Command
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 1 IF
* * * *
20H to 3FH
RS=0
*: don't care
This instruction initializes the system, and must be the first instruction executed after power-on.
The IF bit selects between an 8-bit or a 4-bit bus width interface.
IF=1: 8-bit CPU interface using DB7 to DB0
IF=0: 4-bit CPU interface using DB7 to DB4
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CU40045-UW1J

Mfr. #:
Buy CU40045-UW1J
Manufacturer:
Noritake
Description:
Vacuum Fluorescent Displays - VFD U-VERSION 40X4 137.4 X 23.2 DISP
Lifecycle:
New from this manufacturer.
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