Vacuum Fluorescent Display
Module
Specification
Model: GU128X32D-7003
Specification No: DS-1144-0001-01
Date Of Issue: June 17 , 2004
Revision: September 17, 2004
Published by
NORITAKE ITRON CORP. / Japan
http://www.noritake-itron.jp
This specification is subject to change without prior notice.
GU128X32D-7003
- 1 -
Index.
1 General Description ........................................................................................................................................................... 3
1.1 Scope ............................................................................................................................................................................ 3
1.2 Construction ................................................................................................................................................................. 3
1.3 Outline ........................................................................................................................................................................... 3
1.4 Block Diagram.............................................................................................................................................................. 3
2 Electrical specification...................................................................................................................................................... 4
2.1 Absolute Maximum Ratings ....................................................................................................................................... 4
2.2 Electrical ratings........................................................................................................................................................... 4
2.3 Electrical Characteristics ............................................................................................................................................ 4
3 Optical Specifications........................................................................................................................................................ 5
4 Environmental Specifications.......................................................................................................................................... 5
5 Interface ................................................................................................................................................................................ 5
5.1 Type of interface .......................................................................................................................................................... 5
5.2 Serial interface ............................................................................................................................................................. 5
5.2.1 Basic function ....................................................................................................................................................... 5
5.2.2 Asynchronous serial interface timing.................................................................................................................... 5
5.2.3 Synchronous serial interface timing...................................................................................................................... 6
5.3 Reset timing.................................................................................................................................................................. 6
6 Display specification ......................................................................................................................................................... 7
6.1 Displayable image types............................................................................................................................................. 7
6.1.1 Graphic display ..................................................................................................................................................... 7
6.1.2 Character display................................................................................................................................................... 7
6.2 Display memory ........................................................................................................................................................... 7
6.3 Window.......................................................................................................................................................................... 8
6.3.1 Base-Window........................................................................................................................................................ 8
6.3.2 User-Window ........................................................................................................................................................ 8
6.4 Write screen mode for “Base Window” ................................................................................................................... 9
6.4.1 Display screen mode (Scanning)........................................................................................................................... 9
6.4.2 All screen mode (Scanning) .................................................................................................................................. 9
6.5 Character display format........................................................................................................................................... 10
7 Function .............................................................................................................................................................................. 11
7.1 Commands ................................................................................................................................................................. 11
7.1.1 Character display................................................................................................................................................. 11
7.1.2 BS (Back Space).................................................................................................................................................. 12
7.1.3 HT (Horizontal Tab) – 1 character to right.......................................................................................................... 12
7.1.4 LF (Line Feed) .................................................................................................................................................... 13
7.1.5 HOM (Home Position)........................................................................................................................................ 14
7.1.6 CR (Carriage Return) .......................................................................................................................................... 14
7.1.7 US $ xL xH yL yH (Cursor Set)....................................................................................................................... 14
7.1.8 CLR (Display Clear)........................................................................................................................................... 14
7.1.9 US C n (Cursor ON/OFF) ................................................................................................................................... 14
7.1.10 ESC@ (Initialize Display).................................................................................................................................. 14
7.1.11 ESC % n (Specify Download Register) ............................................................................................................... 15
7.1.12 ESC & a c1 c2 [x1 d1...d(a×x1)]...[xk d1...d(a×xk)] (Download character definition)................................... 15
7.1.13 ESC ? a c (Delete downloaded character) .......................................................................................................... 16
7.1.14 ESC R n (Specifies International font set)........................................................................................................... 16
7.1.15 ESC t n (Specifies character code type) .............................................................................................................. 16
7.1.16 US MD1 (Over-write mode)................................................................................................................................16
7.1.17 US MD2 (Vertical scroll mode)........................................................................................................................... 17
7.1.18 US MD3 (Horizontal scroll mode)..................................................................................................................... 17
7.1.19 US s n (Horizontal scroll speed) ....................................................................................................................... 17
7.1.20 US r n (Specifies or cancels reverse display) ..................................................................................................... 17
7.1.21 US w n (Specifies write mixture display mode).................................................................................................. 18
7.1.22 US X n (Brightness level setting) ....................................................................................................................... 18
GU128X32D-7003
- 2 -
7.1.23 US ( a n [parameter] (Display action command group)...................................................................................... 18
7.1.24 <Function 01H> US ( a n t (Wait) ...................................................................................................................... 18
7.1.25 <Function 10H> US ( a n wL wH cL cH s (Scroll display action)..................................................................... 19
7.1.26 <Function 11H> US ( a n p t1 t2 c (Display Blink) ............................................................................................ 20
7.1.27 <Function 12H> US ( a n p (Screen saver) ........................................................................................................ 20
7.1.28 US ( f n [parameter] (Bit image display group)................................................................................................. 21
7.1.29 <Function 11H> US ( f n xL xH yL yH g d(1)...d(k) .......................................................................................... 21
7.1.30 US ( g n [parameter] (Font command group).................................................................................................... 22
7.1.31 <Function 03H> US ( g n w (Character display width) .................................................................................... 22
7.1.32 <Function 40H> US ( g n x y (Font magnified display).................................................................................... 22
7.1.33 US ( w n [parameter] (Window command group).............................................................................................. 23
7.1.34 <Function 01H> US ( w n a (Current Window select)........................................................................................ 23
7.1.35 <Function 02H> US ( w n a b[xPL xPH yPL yPH xSL xSH ySL ySH]............................................................ 24
7.1.36 <Function 10H> US ( w n a (Write screen mode select (see sect. 6.3)............................................................... 25
7.1.37 WINx (Short-Cut Current Window Select) ......................................................................................................... 25
7.2 Bit image data format ................................................................................................................................................ 26
8 Setup.................................................................................................................................................................................... 27
8.1 Jumper ........................................................................................................................................................................ 27
8.1.1 Baud rate select (Applying for Asynchronous serial interface)........................................................................... 27
8.1.2 Serial interface select .......................................................................................................................................... 27
9 Connector........................................................................................................................................................................... 27
9.1 Serial interface connector (Six through holes)....................................................................................................... 27
9.1.1 Case of Asynchronous serial interface is selected. .............................................................................................. 27
9.1.2 Case of Synchronous serial interface is selected. ................................................................................................ 27
10 Notation of firmware version..................................................................................................................................... 28
11 Outline Drawing............................................................................................................................................................ 29
Notice for the Cautious Handling VFD Modules ................................................................................................................ 30
Revision Note.............................................................................................................................................................................. 31
GU128X32D-7003
- 3 -
1 General Description
1.1 Scope
This specification covers the operation and operating requirements of the vacuum fluorescent
graphic display module GU128X32D –7003.
1.2 Construction
The module consists of a 128 x 32dot graphic BD-VFD, refresh RAM, character generator, DC/DC
converter, display controller, and all necessary control logic. The module can simultaneously
display graphic patterns and/or characters on the screen.
1.3 Outline
Power supply: + 5 VDC only
Interface: Serial interface (C-MOS Synchronous or Asynchronous, Selectable)
Function: Character display, 5x7, Attribution
(5x7Character font, refer to spec. of DS-898-0002-xx)
Graphic display
Control command
Character download function
Screen saver function
Applied reliability spec: TT-99-3105
Applied production spec:TT-98-3413
1.4 Block Diagram
Controller
BD-VFD
Serial I/F
Connecter
EF1
VDD2
EF2
DC/DC
Converter
VCC
GND
Jumper
GU128X32D-7003
- 4 -
2 Electrical specification
2.1 Absolute Maximum Ratings
Parameter Symbol Min. Typ. Max. Unit
Power Supply Voltage VCC -0.3 - +6.0 VDC
Logic Supply Voltage
SIN,SCK,/ RESET VIN -0.3 - Vcc+0.3 VDC
2.2 Electrical ratings
Parameter Symbol Min. Typ. Max. Unit
Power Supply Voltage VCC 4.75 5.0 5.25 VDC
All driving voltage for the VFD is converted from the DC/DC converter on board.
2.3 Electrical Characteristics
Measuring Conditions: Ambient temperature = 25degrees C, VCC =5.0VDC
Parameter Symbol Min. Typ. Max. Unit Condition Note
“L” Level Logic Input Current
SIN, SCK, /RESET IIL -0.6 mA VIN=0V
“H” Level Logic Input Current
SIN, SCK, /RESET IIH - - 1.0 uADC VIN=5V -
"H" VIH 0.8VCC - VCC - - -
Logic Input Voltage
SIN, SCK, /RESET "L" VIL 0 - 0.2VCC VDC - -
"H" VOH 3.8 - VCC VDC IOH=-1.5mA -
Logic Output Voltage
SBUSY, "L" VOL 0 - 0.6 VDC IOL=1.6mA -
Power Supply Current 1 ICC1 - 300 400 mADC - (1)
Power Supply Current 2 ICC2 - 250 330 mADC - (2)
Power Supply Current 3 ICC3 - 25 35 mADC - (3)
Note
(1),(2) ICC1 shows the current at all dots in the screen are lighted and ICC2 at all dots off. At power on
rush, more than 2times current of above table should be expected. Provide the quick rise type power
supply (<100msec.).
(3)Icc3 shows the current at Power OFF Mode (Power save mode).
GU128X32D-7003
- 5 -
3 Optical Specifications
Number of dots: 4096（128 x 32）
Display area: 57.45mm x 13.93mm(X x Y)
Dot size: 0.30mm x 0.29mm(X x Y)
Dot pitch: 0.45mm x 0.44mm (X x Y)
Luminance: 350cd/m2 Min. (700cd/m2 Typ.)
Color of illumination: Green (Blue Green)
4 Environmental Specifications
Operating temperature: -40 to +85degrees C
Storage temperature: -40 to +85degrees C
Storage humidity: 20 to 80 % R.H(Non Condensing)
Vibration: 10-55-10Hz, all amplitude 1mm, 30Min., X-Y-Z (Non operating)
Shock: 392m/s2 (40G) 9mS X-Y-Z (Non operating)
5 Interface
5.1 Type of interface
The following interfaces are available on this module;
Serial interface (C-MOS Synchronous or Asynchronous, Selectable)
5.2 Serial interface
5.2.1 Basic function
There are two Serial interfaces: C-MOS Synchronous or Asynchronous and they are Selectable by
jumper. The module sets the SBUSY line upon receipt of data, and clears the line when ready to
receive more data.
5.2.2 Asynchronous serial interface timing
Interface:
Baud rate 9,600 ～ 115,200bps (Selectable by Jumper)
Parity None parity
Format Start (1bit)＋Data (8bit)＋Stop (1bit)
Handshake SBUSY
SBUSY
SIN
Min.
0μs
1
0
1
0
Max.
20μs
GU128X32D-7003
- 6 -
Receiving Buffer Capacity: 12 byte
SBUSY change timing:
SBUSY 1(BUSY) 0(READY)
Condition When there is data in buffer When there is no data in buffer
Data can be stored into receiving buffer. However, it recommends not sending the data
when SBUSY=1.
Interface:
5.2.3 Synchronous serial interface timing
Receiving Buffer Capacity: 12 byte
SBUSY change timing:
SBUSY 1(BUSY) 0(READY)
Condition When there is data in buffer When there is no data in buffer
Data can be stored into receiving buffer. However, it recommends not sending the data
when SBUSY=1.
5.3 Reset timing
Reset pulse (active low) should be longer than 1mS.
The module sets the SBUSY line upon receipt of Reset signal and clears the line when ready to
receive the data.
SBUSY
SIN
Max.
20μs
Min.
200ns
Min.
200ns
D0 D1 D2 D3 D4 D5 D7
SCK
Min.
0μs
D0
1
0
1
0
D6
Min.
200ns
Min.
200ns
Min.
500ns
Min.
1.5μs
/WR
SIN
/Reset
Min.
1ms
SBUSY
Max.
100ms
VALID
GU128X32D-7003
- 7 -
6 Display specification
6.1 Displayable image types
6.1.1 Graphic display
Number of dot: 128 x 32 dots
6.1.2 Character display
Character mode: 5 x 7 dot
Character font type: 5 x 7 dot - Characters, ANK, international font
Character display width: Fixed character format 1 & 2, Proportional character format 1 & 2.
Attribution: Character magnify, Reverse
6.2 Display memory
Size: 256x 32 dots - separated as: Display area (128x32dots)
Hidden area (128x32dots).
Hidden area also can be displayed by using “Display action command group” Refer to
“Display action command group”, Page 20.
By using “User Window” function, All display area can be separated, and each window
separated can be controlled independently.
y
x
B7
B6
B5
B4
B3
B2
B1
B0
0
1
2
3
0 255
1 254
A
ll display memory 256 dots
32
dots
127
Display area 128 dots Hidden area 128 dots
0
0
0
0
h
0
0
0
1
h
0
0
0
3
h
0
0
0
4
h
0
0
0
5
h
0
0
0
7
h
0
1
F
C
h0
1
F
D
h
0
1
F
F
h
0
3
F
C
h
0
3
F
D
h
0
3
F
F
h
0
3
F
8
h
0
3
F
9
h
0
3
F
B
h
0
0
0
2
h
0
0
0
6
h
0
1
F
E
h
0
3
F
E
h
0
3
F
A
h
GU128X32D-7003
- 8 -
6.3 Window
Window function divides display screen as “Window” ,and each divided “Window” can be controlled
and displayed independently. Refer to “Window command group”, Page 25.
There is no independed display memories for each “Window”.
There are 2 types of “Window”, Base-Window and User-Window .
6.3.1 Base-Window
This has the whole display screen and if User-Window is not defined, all display operation is
processed under this Base-Window.
When some User-Window is defined, the display operation to the out of display screen of
User-Window should be processed under Base-Window.
When Base-Window is selected even if some User-Window is defined, all of display operation is
processed under Base-Window. Therefore, the current display pattern of User-Window is
overwritten.
6.3.2 User-Window
User-Window is defined by command, and display operation can be processed on
User-Window selected by “Current Window select” command.
User-Window can be defined up to 4 windows.
Base-Window ABCDEFG
HIJKLMN
OPQRSTU User-Window
01234567
Base-Window
User-Window 2
User-Window 3
User-Window 1 User-Window 4
GU128X32D-7003
- 9 -
6.4 Write screen mode for “Base Window”
This effects only for Base Window.
There are two types of Write screen mode, Display screen mode and All screen mode which can be
changed by command. (Refer to Window command group , “Write screen mode select”,Page 27)
6.4.1 Display screen mode (Scanning)
When the cursor is located on the Display area, all of operation will be done within Display area, and
when cursor is located on the Hidden area, it will be done within Hidden area.
6.4.2 All screen mode (Scanning)
All of operation will be done on all of area.
Display area 128 dots Hidden area 128 dots
Display area 128 dots Hidden area 128 dots
GU128X32D-7003
- 10 -
6.5 Character display format
Character display format is following selectable by “Character display width” command.
Type of
character
Display
position Format
Fixed
character
width 1
Fixed
character
width 2
Proportional
character
width 1
Proportional
character
width 2
Character
format
5 x 7 5 x 7 n x 7 n x 7
Upper space 0 0 0 0
Lower space 1 1 1 1
Left space 0 1 0 1
Standard
character
and
Download
character
5x7dot
Y=0～3
Right space 1 1 1 1
Character
format
6 x 8 * 7 x 8 6 x 8 * 7 x 8
Upper space 0 0 0 0
Lower space 0 0 0 0
Left space 0 0 0 0
Download
character
7x8
Y=0～3
Right space 0 0 0 0
* The most left part of 6x8 dot within 7x8 dot is displayed.
Note: In case of proportional character width is specified, the blank character (20H) will be operated
as same as 2 dot width character.
Fixed character width 1 Fixed character width 2
Proportional character width 1 Proportional character width 2
GU128X32D-7003
- 11 -
7 Function
7.1 Commands
The details of each command as follows;
Note: The size of character (X x Y dot) desclibed in this section is depending on the command of
“Character display width” or “Font magnified display”.
Number of X dot and Y dot for 1 character width for each commands except “Character display”
under the condition of each character display width are as follows;
Character type Fixed character
width 1
Fixed character
width 2
Proportional
character width 1
Proportional
character width 2
Nunber of X dot 5 + 1 5 + 2 5 + 1 5 + 2
Nunber of Y dot 7 + 1 7 + 1 7 + 1 7 + 1
7.1.1 Character display
Code: 20H – FFH
Name: Character display
Function: Display the character on cursor position.
This command effects on the current window selected by “Current window select”.
When MD1 mode is selected.
Cursor position
X direction Y direction Operation
The space for 1 character size
is in right side. - Display >> HT
The space for one line is in
the lower side. HT >> Display >> HT
Right end The space for one line is
NOT in the lower side. HT >> Display >> HT
When MD2 mode is selected.
Cursor position
X direction Y direction Operation
The space for 1 character size is in
right side. - Display >> HT
The space for one line is in the
lower side. HT >> Display >> HT
Right end The space for one line is NOT
in the lower side. HT >> Display >> HT
When MD3 mode is selected.
Cursor position
X direction Y direction Operation
The space for 1 character size
is in right side. - Display >> HT
Right end - HT >> Display >> HT
GU128X32D-7003
- 12 -
7.1.2 BS (Back Space)
Code: 08H
Function: The cursor moves to left by one character.
This command effects on the current window selected by “Current window select”.
When MD1 and 2 modes is selected.
Cursor position
X direction Y direction Operation
The space for 1 character size is in
right side. - The cursor moves to left by one
character.
The space for one line is in the
lower side.
The cursor moves to the right end
of one upper line.
Right end The space for one line is NOT
in the lower side. The cursor does not move.
When MD3 mode is selected.
Cursor position
X direction Y direction Operation
The space for 1 character size is in
right side. - The cursor moves to right by one
character.
Right end - The cursor does not move.
7.1.3 HT (Horizontal Tab) – 1 character to right
Code: 09H
Function: The cursor moves to right by one character. This command effects on the
current window selected by “Current window select”. The detail of operation is:
When MD1 mode is selected.
Cursor position
X direction Y direction Operation
The space for 1 character size is in
right side. - The cursor moves to right by one
character.
The space for one line is in the
lower side.
The cursor moves to the left end of
one lower line.
Right end The space for one line is NOT
in the lower side.
The cursor moves to the left end of
top line.
When MD2 mode is selected.
Cursor position
X direction Y direction Operation
The space for 1 character
size is in right side. - The cursor moves to right by one character.
The space for one line is in the
lower side. The cursor moves to the left end of one lower line.
Right end The space for one line is NOT
in the lower side.
All displayed pattern is scrolled up to one upper line,
displayed pattern of lowest line is cleared. And
cursor moves to left end of bottom line.
GU128X32D-7003
- 13 -
When MD3 mode is selected.
Cursor position
X direction Y direction Operation
The space for 1 character size is in
right side. - The cursor moves to right by one character.
Right end -
The displayed pattern on cursor line is scrolled to left by
one character, Right end character is cleared, and cursor
moves to the right end.
7.1.4 LF (Line Feed)
Code: 0AH
Function: The cursor moves to one lower line. This command effects on the current window
selected by “Current window select”. The detail of operation is as follows;
When MD1 modes is selected.
Cursor position
X direction Y direction Operation
The space for one line is in the lower
side.
The cursor moves to the same position of one
lower line.
- The space for one line is NOT in the
lower side. The cursor moves to the left end of top line.
When MD2 mode is selected.
Cursor position
X direction Y direction Operation
The space for one line is in the
lower side.
The cursor moves to the same position of one lower
line.
- The space for one line is NOT in the
lower side.
All of displayed pattern is scrolled to one upper line,
and displayed pattern of bottom line is cleared.
The cursor does not move.
When MD3 mode is selected.
Cursor position
X direction Y direction Operation
- - The cursor does not move.
GU128X32D-7003
- 14 -
7.1.5 HOM (Home Position)
Code: 0BH
Function: The cursor moves to the home position. This command effects on the current
window selected by “Current window select”.
7.1.6 CR (Carriage Return)
Code: 0DH
Function: The cursor moves to left end of same line. This command effects on the
current window selected by “Current window select”.
7.1.7 US $ xL xH yL yH (Cursor Set)
Code: 1FH 24H xL xH yL yH
xL: Cursor position x Lower byte (1 dot/unit)
xH: Cursor position x Upper byte (1 dot/unit)
yL: Cursor position y Lower byte (8 dot/unit)
yH: Cursor position y Upper byte(8 dot/unit)
Definable area: 0 ≦ (xL + xH x 255) ≦ 255
0 ≦ (yL + yH x 255) ≦ 3
Function: The cursor moves to specified X, Y position on display memory. If the specified X, Y
position (X, Y, either or both) is over range, the command is ignored, and keep same
cursor position.
This command effects on the current window selected by “Current window select”.
7.1.8 CLR (Display Clear)
Code: 0CH
Function: The display screen is cleared and the cursor moves to home position after this
command was executed. This command effects on the current window selected by
“Current window select”.
7.1.9 US C n (Cursor ON/OFF)
Code: 1F 43H n
n: Display cursor ON/OFF select
n = 0 : Cursor OFF
n = 1 : Cursor ON
Default: n = 0
Function: Select cursor ON or OFF.
When cursor display ON is selected, the cursor position is displayed by 1x8 dots.
7.1.10 ESC@ (Initialize Display)
Code: 1BH 40H
Returns to default.
Jumper is not re-loaded.
The contents of receiving buffer remain in memory.
GU128X32D-7003
- 15 -
7.1.11 ESC % n (Specify Download Register)
Code: 1BH 25H n
Function: Specify enable or disable for download character.
n = 1: Enable (If download character is not defined, buil-in character is displayed)
n = 0: Disable (Characters already downloaded, defined, and displayed are not affected)
7.1.12 ESC & a c1 c2 [x1 d1...d(a×x1)]...[xk d1...d(a×xk)] (Download character definition)
Code: 1Bh 26h a c1 c2 [x1 d1…d(a×x1)]…[xk d1…d(a×xk)]
a: Select character type
c1: Start character code
c2: End character code
x: Number of dot for X direction
d: Defined data（See sect. 7.3 - Download character format）
Definable area: a = 1
x = 5: 5x7 dot font
x = 7: 7x8 dot font
32 ≦ c1 ≦ c2 ≦ 255
0 ≦ d ≦ 255
x = 5: Upper 7 bit is valid.
x = 7: All 8 bit is valid.
k ＝ c2 – c1 + 1
Function: To define download characters into RAM.
A maximum of 16 characters may be downloaded and defined.
x=5 : Defined by 5x7dot, and 5x7 dot character regulated upper and lower space is displayed as
same as standard character display.
x=7 : Defined by 7x8 dot, and 6x8 or 7x8 dot character unrelated to space is displayed.
After the first 16 are defined, any additional characters required must replace one already defined.
Downloaded characters are valid until they redefined, an initialize (ESC@) sequence is executed,
or the power is turned off. To display the download character, excution of “Downlord character
difinition” and “Specify download character” is required. In case of displaying download character
is re-defined, displaying character is not changed, new download character is applied from new
data.
(5x7 dot) (7x8dot)
B7
B6
B5
B4
B3
B2
B1
B0
d1 d2 d3 d4 d5
B7
B6
B5
B4
B3
B2
B1
B0
d1 d2 d3 d4 d5 d6 d7
GU128X32D-7003
- 16 -
7.1.13 ESC ? a c (Delete downloaded character)
Code: 1BH 3FH a c
a: Select character
c: Character code for delete
Definable area: a = 1
32 ≦ c ≦ 255
Function: Delete defined download character.
The built-in chracter is displayed after this command is excuted.
It does not affect to the displaying download character.
This command is ignored if character code for download character is not defined.
7.1.14 ESC R n (Specifies International font set)
Code: 1BH 52H n
Definable area: 0 ≦ n ≦ 13
Default: n=0
Function: Select international font set.
7.1.15 ESC t n (Specifies character code type)
Code: 1BH 74H n
Definable area: n = 0, 1, 2, 3, 4, 5, 16, 17, 18, 19
Default: n = 0
Function: Selects font code
7.1.16 US MD1 (Over-write mode)
Code: 1FH 01H
Function: Over-writes, or replaces existing data.
This command effects on the current window selected by “Current window select”.
n Font set
0 America
1 France
2 Germany
3 England
4 Denmark 1
5 Sweden
6 Italy
7 Spain1
8 Japan
9 Norway
10 Denmark2
11 Spain2
12 Latin America
13 Korea
n Font code type
0 PC437(USA – Euro std)
1 Katakana – Japanese
2 PC850 (Multilingual)
3 PC860 (Portuguese)
4 PC863 (Canadian-French)
5 PC865 (Nordic)
16 WPC1252
17 PC866 (Cyrillic #2)
18 PC852 (Latin 2)
19 PC858
GU128X32D-7003
- 17 -
7.1.17 US MD2 (Vertical scroll mode)
Code: 1FH 02H
Function: Scrolls cursor up 1 line
This command effects on the current window selected by “Current window select”.
7.1.18 US MD3 (Horizontal scroll mode)
Code: 1FH 03H
Function: Scrolls cursor horizontally 1 space
This command effects on the current window selected by “Current window select”.
7.1.19 US s n (Horizontal scroll speed)
Code: 1FH 73H n
Definable area: 0 ≦ n ≦ 31
Default: n = 0
Note that until scrolling action is ended, new
command(s) will not excuted. Scroll base
speed “T” is depending on write screen mode,
character size selected.
7.1.20 US r n (Specifies or cancels reverse display)
Code: 1FH 72H n
n : Specify or cancel reverse character and graphic display
Definable area: 0 ≦ n ≦ 1
n=0: Cancel reverse mode
n=1: Specify reverese mode
Default: n=0
Note: This command is valid to the new data after this command is specified.
This does not affect the contents already displayed.
If n=0 is specified, scrolling
is appeared by character n Speed
0 By Character
1 T msec / 2dots
2 – 31 (n-1)×T msec / dot
GU128X32D-7003
- 18 -
7.1.21 US w n (Specifies write mixture display mode)
Code: 1FH 77H n
n : Specif display write mode
Definable area: 0 ≦ n ≦ 3
n = 0: Normal display write. (Not mixture display)
n = 1: OR display write
n = 2: AND display write
n = 3: EX-OR display write
Default: n = 0
Function: Specifies write mixture mode. The new character or graphic image display mixed with
current display image stored in display memory is overwritten to the display memory.
7.1.22 US X n (Brightness level setting)
Code: 1FH 58H n
n : Brightness level setting
Definable area: 1 ≦ n ≦ 8
Default: n=8
Function: Specify brightness level of whole display screen.
n Level
1 12.5% 2 25%
3 37.5% 4 50%
5 62.5% 6 75%
7 87.5% 8 100%
7.1.23 US ( a n [parameter] (Display action command group)
Function: Execute processing of display action command.
n Function No. Function
01H Function 01H Wait
10H Function 10H Scroll display action
11H Function 11H Blink display action
40H Function 40H Screen saver
n: specify function code.
The next command or data is not excuted until display action processing is ended.
7.1.24 <Function 01H> US ( a n t (Wait)
Code: 1FH 28H 61H 01H t
n: Classify command
t: Wait time
Definable area: n = 01H
0 ≦ t ≦ 255
Note: Wait time, define, command, and data processing are stopped while waiting by this
command. Wait time = t X approx. 0.5sec
GU128X32D-7003
- 19 -
7.1.25 <Function 10H> US ( a n wL wH cL cH s (Scroll display action)
Code: 1FH 28H 61H 10H wL wH cL cH s
n : Classify command
wL: Display screen shift ,number of upper byte.
wH: Display screen shift ,number of lower byte.
cL: Number of reptition lower byte
cH: Number of reptition upper byte
s: Scroll action speed
Definable area: n = 10H
0 ≦ (wL + wH x 256) ≦ 1023
0 ≦ (cL + cH x 256) ≦ 65535
0 ≦ s ≦ 255
Function: Shift the display screen.
Horizontal scrolling can be possible by specifying the shift byte to multiple number of (Display
screen “y” dot /8). Display swiching can be possible by specify shift byte to (Display screen “x” dot
x Display screen “y” dot /8). Scroll speed is specified by “s”. Scroll speed: s X approx. 14msec/1
shift
For example: 1dot scroll to the left: sL=04H, sH=00H
Display area 128 dots
Hidden area 128 dots
0
0
0
0
h
0
0
0
1
h
0
0
0
3
h
0
0
0
4
h
0
0
0
5
h
0
0
0
7
h
0
1
F
C
h
0
1
F
D
h
0
1
F
F
h
0
3
F
C
h
0
3
F
D
h
0
3
F
F
h
0
3
F
8
h
0
3
F
9
h
0
3
F
B
h
0
0
0
2
h
0
0
0
6
h
0
1
F
E
h
0
3
F
E
h
0
3
F
A
h
GU128X32D-7003
- 20 -
7.1.26 <Function 11H> US ( a n p t1 t2 c (Display Blink)
Code: 1FH 28H 61H 11H p t1 t2 c
n: Classify command
p: Blink pattern
t1: Normal display time
t2: Brank or Reverse display time
c: Number of reptition
Definable area: n = 11H
0 ≦ p ≦ 2
p=0: Nomal display.
P=1: Repeat blink display with nomal and Brank display
P=2: Repeat blink display with nomal and Reverse display
1 ≦ t1 ≦ 255
1 ≦ t2 ≦ 255
1 ≦ c ≦ 255
Function: Blink display action Blink pattern specifed by “p”.
Time specified by “t1” , “t2”, and repeat Blink display
A : t1 X approx.14msec Nomal display
B: t2 X approx. 14msec Brank or Reverse display
This command does not affect to display memory.
If c=0 is specified, brink display is repeated until when c=1 – 255 or Initialize command is specified,
and the command/data execution is continued during display blinking.
If c=1 – 255 is specified, brink display is repeated 1-255 times, and the command/data execution
is stopped. After display blinking is ended, return to nomal display and command/data execution
is re-started.
7.1.27 <Function 12H> US ( a n p (Screen saver)
Code: 1FH 28H 61H 40H p
n: Classify command
p: Screen saver mode
Definable area: n = 40H
0 ≦ p ≦ 4
p=0: Power OFF (All dot OFF, Power save mode)
p=1: Power ON (All dot ON)
p=2: All dot OFF
p=3: All dot ON
p=4: Repeat blink display with nomal and Reverse display (Nomal :2sec., Reverse:2sec.)
Function: Control Power ON or OFF, and Start Screen saver mode.
p=0~1 : Control Power ON or OFF. This is applied until this command is re-specified
p=2~4 : Start Screen saver mode. This command is canceled if next any data is inputted during
screen saver mode, and return to the previous display condition before screen saver mode
specified.
GU128X32D-7003
- 21 -
7.1.28 US ( f n [parameter] (Bit image display group)
Function: Execute processing of bit image data.
n: Specifies function code.
7.1.29 <Function 11H> US ( f n xL xH yL yH g d(1)...d(k)
(Real-time bit image display)
Code: 1Fh 28h 66h 11h xL xH yL yH g d(1)...d(k)
n: Classify command
xL: Bit image X size lower byte ( by 1dot)
xH: Bit image X size upper byte ( by 1dot)
yL: Bit image Y size lower byte ( by 8dots)
yH: Bit image Y size upper byte ( by 8dots)
g: Image =1(Fixed)
d(1) - d(k): Image data (Refer to figure as follows)
Definable area: n ＝ 11H
1 ≦ (xL + xH×256) ≦ 256
1 ≦ (yL + yH×256) ≦ 4
g=1
0 ≦ d ≦ 255
k = x X y X g
Function: Display the bit image data inputed on the cursor position real-time.
Cursor position will not change.
When bit image is display on cursor position, and if it overflows from the current window, it is
displayed until edge of area defined, and remaining bit image overflowed is not displayed. If the
Display position or image size e.t.c are defined to out of definable area, the command is ignored,
and the data is valid as standard data.
n Function No. Function
11H Function 11H Real-time bit image display
Display memory
Cursor position
y
x
d
y
d
(
y
+
1
)
d
1
d
(
y
*
2
)
GU128X32D-7003
- 22 -
7.1.30 US ( g n [parameter] (Font command group)
Function: Execute processing of window command.
N Function No. Function
03H Function 03H Character display width
40H Function 40H Font magnified display
n: specify function code.
7.1.31 <Function 03H> US ( g n w (Character display width)
Code: 1FH 28H 67H 03H w
n: Classify command
w: Specify width
Definable area: n = 03H
0 ≦ w ≦ 3
w = 0: Fixed character width 1 (1 dot space in right side)
w = 1: Fixed character width 2 (1 dot space in each right and left side)
w = 2: Proportional character width 1 (1 dot space in right side)
w = 3: Proportional character width 2 (1 dot space in each right and left side)
Default: w= 1
Function: Specifies character display width.
Fixed character width 1 & 2: Character is written with fixed character width. (6 or 7dot)
Proportional character width: Character is written with proportioned character width.
7.1.32 <Function 40H> US ( g n x y (Font magnified display)
Code: 1FH 28H 67H 40H x y
n: Classify command
x: Specify the size of magnification X
y: Specify the size of magnification Y
Definable area: n = 40H
1 ≦ x ≦ 4
1 ≦ y ≦ 2
Default: x = 1
Y = 1
Function: Specifies magnification of character.
Character is magnified including the space specified by Character display width command.
GU128X32D-7003
- 23 -
(x=1, y=1)
(x=2, y=2)
7.1.33 US ( w n [parameter] (Window command group)
Function : Execute processing of window / screen command.
n Function No. Function
01H Function 01H Current window select
02H Function 02H User -Window difinition and cancel
10H Function 10H Write screen mode select
n: specify function code.
7.1.34 <Function 01H> US ( w n a (Current Window select)
Code: 1FH 28H 77H 01H a
n: Classify command
a: Current window number
a = 0: Base-Window
a = 1 ～ 4: User-Window
Definable area: n = 01H
0 ≦ a ≦ 4
Function: Select current window
This command is ignored if current window number is specified for User-Window that is
not defined.
GU128X32D-7003
- 24 -
7.1.35 <Function 02H> US ( w n a b[xPL xPH yPL yPH xSL xSH ySL ySH]
(User Window definition-cancel)
Code: 1Fh 28h 77h n a b [xPL xPH yPL yPH xSL xSH ySL ySH]
n: Classify command
a: Definable window No. No.1 ～ 4
b: Define or Cancel b=0 : Cancel, b=1: Define
xPL:
Left position of window lower byte ( by 1dot)
xPH:
Left position of window upper byte ( by 1dot)
yPL:
Top position of window lower byte ( by 8dot)
yPH:
Top position of window upper byte ( by 8dot)
xSL:
X size of window lower byte ( by 1dot)
xSH: X size of window upper byte ( by 1dot)
ySL: Y size of window lower byte ( by 8dot)
ySH: Y size of window upper byte ( by 8dot)
Definable area: n = 02H
1 ≦ a ≦ 4
0 ≦ b ≦ 1
0 ≦ xP ≦ 255
0 ≦ yP ≦ 3
1 ≦ xS ≦ 256
1 ≦ yS ≦ 4
Function: Define or cancel User-Window
Display contents are remained even if this command is excuted.
When User-Window is defined (b=1)
Specify Definable Window No., Window position and Window size, and Window position and
Window size are specified by the block (Block/1x8dot)
A
ll display memory 256 dots
32
dots
yP
yS
xP xS
GU128X32D-7003
- 25 -
User-Window can be defined up to 4 windows.
The cursor position after excuted this command is specified to top left (X=0, Y=0).
When User-Window is canceled (b=0)
It is not necessary to specify window position [xPL～ySH] in case of cancel the
User-Window .
The Base-Window is selected as current window in case of user window canceled was
selected as current window.
7.1.36 <Function 10H> US ( w n a (Write screen mode select (see sect. 6.3)
Code: 1FH 28H 77H n a
n: Classify command
a: Write screen mode
a = 0: Display acreen mode
a = 1: All screen mode
Definable area: n = 10H
0 ≦ a ≦ 1
Default: a= 0
Function: Select the write screen mode. This effects only for Base Window.
Display action is valid within area of either Display ara or HIdden area depending on
cursor position.
Select “All screen mode”: Display action is valid on all of screen area.
7.1.37 WINx (Short-Cut Current Window Select)
Function: Current window move to selected window.
Refer to 7.1.34 for more detail.
WINx Function
WIN0 (10h) Select the base window
WIN1 (11h) Sleect the user window1
WIN2 (12h) Select the user window2
WIN3 (03h) Select the user window3
WIN4 (04h) Select the user window4
GU128X32D-7003
- 26 -
7.2 Bit image data format
The Bit image consists of the data for image size (x * y) as follows;
Data Pattern position
d (1) P1
d (2) P2
d (x * y) P( x * y )
P1
P2
P(x*y)
P(x*y-1)
Py
B7
B6
B5
B4
B3
B2
B1
B0
GU128X32D-7003
- 27 -
8 Setup
8.1 Jumper
8.1.1 Baud rate select (Applying for Asynchronous serial interface)
J0 J1 Baud rate
OPEN OPEN 38,400bps
SHORT OPEN 19,200bps
OPEN SHORT 9,600bps
SHORT SHORT 115,200bps
8.1.2 Serial interface select
J2 Mode
OPEN Asynchronous serial I/F
SHORT Synchronous serial I/F
9 Connector
9.1 Serial interface connector (Six through holes)
9.1.1 Case of Asynchronous serial interface is selected.
Pin No. Signal name Function Direction
1 VCC Power supply Input
2 SIN Data receive Input
3 GND Ground Input
4 SBUSY Display busy Output
5 NC Non connection -
6 /RESET Reset Input
9.1.2 Case of Synchronous serial interface is selected.
Pin No. Signal name Function Direction
1 VCC Power supply Input
2 SIN Data receive Input
3 GND Ground Input
4 SBUSY Display busy Output
5 SCK Display clock Input
6 /RESET Reset Input
No. Function Default
J0 OPEN
J1 Baud Rate select OPEN
J2 Select serial I/F OPEN
JRB Do not use OPEN
GU128X32D-7003
- 28 -
10 Notation of firmware version
The firmware version is written in the following position.
GU128X32D-7xxx
Xxxxx Fnnn
Part Number
Date Code
Firmware Virsion
VFD
GU128X32D-7003
- 29 -
11 Outline Drawing
GU128X32D-7003
- 30 -
Notice for the Cautious Handling VFD Modules
Handling and Usage Precautions:
Please carefully follow the appropriate product application notes for proper usage, safety handling, and operation standards for
maximum performance.
[VFD tubes are made of glass]
• Because the edges of the VFD glass-envelop are not smooth, it is necessary to handle carefully to avoid injuries to
your hands
• Please avoid breaking the VFD glass-envelop to prevent injury from sharp glass particles.
• The tip of the exhaust pipe is fragile so avoid shock from impact.
• It is recommended to allow sufficient open space surrounding the exhaust pipe to avoid possible damage.
• Please design the PCB for the VFD-module within 0.3 mm warping tolerance to avoid any forces that may damage
the display due to PCB distortion causing a breakdown of the electrical circuit leading to VFD failure.
[High voltage]
• Avoid touching conductive electrical parts, because the VFD-module uses high voltage exceeding 30～100 volts.
• Even when electric power is turned off, it may take more than one minute for the electrical current to discharge.
[Cable connection]
• Do not unplug the power and/or data cables of VFD-modules during operating condition because unrecoverable
damage may result.
• Sending input signals to the VFD-module during a power off condition sometimes causes I/O port damage.
• It is recommended to use a 30 cm or shorter signal cable to prevent functional failures.
[Electrostatic charge]
• VFD-modules needs electrostatic free packaging and protection from electrostatic charges during handling and
usage.
[Structure]
• During operation, VFD and VFD-modules generate heat. Please consider sufficient heat radiation dissipation using
heat sink solutions.
• We prefer to use UL grade materials or components in conjunction with VFD-modules.
• Wrap and twist motion causes stress and may break VFDs & VFD modules. Please adhere to allowances within
0.3mm at the point of attachment.
[Power]
• Apply regulated power to the VFD-module within specified voltages to protect from failures.
• Because some VFD-modules may consume in rush current equal to twice the typical current at power-on timing,
we recommend using a sufficient power capability and quick starting of the power regulator.
• VFD-module needs a specified voltage at the point of connection. Please use an adequate power cable to avoid a
decrease in voltage. We also recommend inserting a power fuse for extra protection.
[Operating consideration]
• Illuminating phosphor will decrease in brightness during extended operation. If a fixed pattern illuminates for an
extended period,( several hours), the phosphor efficiency will decrease compared to the non operating phosphor
causing a non uniform brightness among pixels. Please consider programming the display patterns to use all
phosphor segments evenly. Scrolling may be a consideration for a period of time to refresh the phosphor condition
and improve even illumination to the pixels.
• We recommend using a signal cable 30cm or less to avoid some possible disturbances to the signal.
[Storage and operating environment]
• Please use VFD-modules under the recommended specified environmental conditions. Salty, sulfur and dusty
environments may damage the VFD-module even during storage.
[Discard]
• Some VFDs contain a small amount of cadmium in the phosphor and lead in the solder. When discarding VFDs or
VFD-modules, please adhere to governmental related laws or regulations.
[Others]
• Although the VFD-module is designed to be protected from electrical noise, please plan your circuitry to exclude as
much noise as possible.
• Do not reconstruct or repair the VFD-module without our authorization. We cannot assure the quality or reliability of
unauthorized reconstructed VFD-modules.
Notice:
･We do not authorize the use of any patents that may be inherent in these specifications.
･Neither whole nor partial copying of these specifications are permitted without our approval.
If necessary , please ask for assistance from our sales consultant.
･This product is not designed for military, aerospace, medical or other life-critical applications. If you choose to use this product
for these applications, please ask us for prior consultation or we cannot take responsibility for problems that may occur.
GU128X32D-7003
- 31 -
Revision Note
SPEC number Date Revision
DS-1144-0001-00 June. 17,2004 Initial Issue
DS-1144-0001-01 Sep. 17,2004 11. Outer Dimension
Miss type has been corrected
