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RoHS 2002/95/EC
Vacuum Fluorescent Display Module Specification
Model: CU20027-Y100
Specification No: Date of Issue: Revision:
DS-1571-0001-00 January 29, 2009 (00)
Published by NORITAKE ITRON CORP. / Japan http://www.noritake-itron.jp This specification is subject to change without prior notice.
This product complies with RoHS Directive 2002/95/EC
CU20027-Y100 Index.
1
General Description ................................................................................................................................3 1.1 1.2 Scope ...............................................................................................................................................3 Features...........................................................................................................................................3
1.3 Hardware Configuration ................................................................................................................4 1.3.1 Block Diagram ..........................................................................................................................4 2 Electrical Specification...........................................................................................................................4 2.1 2.2 3 4 5 6 7 Absolute Maximum Ratings ..........................................................................................................4 Electrical Ratings............................................................................................................................4
2.3 Electrical Characteristics...............................................................................................................5 Optical Specifications.............................................................................................................................6 Environmental Specifications...............................................................................................................6 Physical Specifications ..........................................................................................................................6 Applicable Specifications ......................................................................................................................6 Interface......................................................................................................................................................6 7.1 7.1.1 7.1.2 7.1.3 Parallel Interface.............................................................................................................................7 Basic Operation.........................................................................................................................7 Flowchart ..................................................................................................................................7 Interface Timing........................................................................................................................8
7.2 Serial Interface................................................................................................................................9 7.2.1 Basic Operation.........................................................................................................................9 7.2.2 Flowchart ..................................................................................................................................9 7.2.3 Asynchronous Serial Interface Timing.................................................................................... 10 7.2.3.1 Data write .............................................................................................................................. 10 7.2.3.2 Data read............................................................................................................................... 10 8 7.3 Reset Timing ................................................................................................................................. 11 Jumper Setting ....................................................................................................................................... 12
8.1 Jumper location ............................................................................................................................ 12 8.1.1 Baud Rate Setting (for Asynchronous Serial Interface only).................................................. 12 8.1.2 Test Mode................................................................................................................................ 12 9 Operating Mode ...................................................................................................................................... 13 9.1 9.2 9.3 9.4 10 11 12 13 13.1 13.2 Direct Command Mode ............................................................................................................... 13 User Set up Mode ........................................................................................................................ 13 Serial OUT Mode.......................................................................................................................... 13 Test mode ...................................................................................................................................... 13 Font Table Configuration ................................................................................................................. 14 Display Area-End of Line Behavior ............................................................................................... 15 Initial setting........................................................................................................................................ 16 Commands........................................................................................................................................... 16 Command Configuration ............................................................................................................. 16 Command Set............................................................................................................................... 17
13.3 Detail of Command Set ............................................................................................................... 18 13.3.1 Character display .................................................................................................................... 18 13.3.2 Back Space.............................................................................................................................. 19 13.3.3 Horizontal Tab......................................................................................................................... 19 13.3.4 Line Feed ................................................................................................................................ 20 13.3.5 Home Position......................................................................................................................... 20 13.3.6 Display Clear .......................................................................................................................... 21
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CU20027-Y100
13.3.7 Carriage Return....................................................................................................................... 21 13.3.8 Underline cursor mode............................................................................................................ 21 13.3.9 Cursor off mode ...................................................................................................................... 21 13.3.10 Block cursor mode .................................................................................................................. 21 13.3.11 Underline cursor blink mode................................................................................................... 21 13.3.12 Cursor set ................................................................................................................................ 21 13.3.13 Initialize display...................................................................................................................... 22 13.3.14 RAM user font ........................................................................................................................ 22 13.3.15 Define RAM user font............................................................................................................. 23 13.3.16 Delete RAM user font ............................................................................................................. 24 13.3.17 Character blink mode OFF...................................................................................................... 24 13.3.18 Character blink mode ON ....................................................................................................... 24 13.3.19 Specify quick write mode ....................................................................................................... 24 13.3.20 Specify International font set .................................................................................................. 25 13.3.21 Specify flickerless write mode ................................................................................................ 25 13.3.22 Blink speed control ................................................................................................................. 26 13.3.23 Underline display mode ON ................................................................................................... 26 13.3.24 Underline display mode OFF.................................................................................................. 26 13.3.25 Insert character........................................................................................................................ 26 13.3.26 Delete character ...................................................................................................................... 27 Insert line ................................................................................................................................ 27 13.3.27 13.3.28 Delete line ............................................................................................................................... 27 13.3.29 Reset........................................................................................................................................ 27 13.3.30 Specify character code type .................................................................................................... 27 13.3.31 Over-write mode ..................................................................................................................... 28 13.3.32 Vertical scroll mode ................................................................................................................ 28 13.3.33 Horizontal scroll mode............................................................................................................ 28 13.3.34 Horizontal scroll speed............................................................................................................ 28 13.3.35 Brightness level setting ........................................................................................................... 28 13.3.36 Wait ......................................................................................................................................... 29 13.3.37 Display blink........................................................................................................................... 29 13.3.38 Screen saver ............................................................................................................................ 30 13.3.39 User set up mode start............................................................................................................. 30 13.3.40 User set up mode end .............................................................................................................. 30 13.3.41 Define FROM user font .......................................................................................................... 31 13.3.42 Read Status information.......................................................................................................... 32 13.3.43 Display Status information...................................................................................................... 32 13.3.44 Serial OUT mode start ............................................................................................................ 32 13.3.45 Serial OUT mode end ............................................................................................................. 33 13.3.46 Select / Deselect 5x8 Matrix font ........................................................................................... 33 13.3.47 Select/Deselect Alternative Magnified Font ........................................................................... 34 13.3.48 Font Magnification.................................................................................................................. 35 13.3.49 Individual Character Brightness Level Setting ....................................................................... 36 14 Pin Configuration ............................................................................................................................... 37 14.1 Parallel interface connecter (Fourteen through-holes / CN1)................................................ 37 14.2 Serial interface connector (Six through-holes / CN3) ............................................................. 37 15 Firmware Version Notation .............................................................................................................. 37 16 Physical Dimensions......................................................................................................................... 38 Notice for the Cautious Handling VFD Modules .................................................................................... 39 Revision Note.................................................................................................................................................. 40
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CU20027-Y100
1
1.1
General Description
Scope
This specification covers the operation and operating requirements of the Vacuum Fluorescent Display (VFD) module CU20027-Y100.
1.2
Features
* Functions o Character highlight o Easy to use ASCII commands and fonts. o Character Magnification o Screen Saver o Blink Action Command(Display or Character) Display o Vivid green indication o Wider viewing angle o High Brightness (Typ. 2000 cd/m2) o Brightness Levels: 8 levels of overall display brightness with 8 relative levels for each individual 5x8 Matrix Font o New 5x8 Matrix Character Font o Many International Font Sets o RAM User-Definable Characters (16 characters) o FROM User-Definable Characters (224 characters) o 40 (20x2) Characters on the compact display area Interface o Parallel Interface: i80 type 8bit bus(C MOS Signal level) o Serial Interface: Asynchronous(RS232 level) Operation o DC 5V input o Wide Operation Temperature Range (-40 ~ +85C)
*
*
* *
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CU20027-Y100
1.3
Hardware Configuration
The module consists of: 20 x 2 character Display (VFD) Refresh RAM Character generator DC/DC converter (Supply all necessary power for VFD) Display controller All necessary control logic circuits
1.3.1 Block Diagram
Parallel IF
Parallel IF Circuit
Controller
VFD
Firmware Serial IF Character font Serial IF Circuit Flash-Memory (User font table) Jumper Swiitch
VCC
DC/DC Converter
VDD2 EF1 EF2
Note: Flash memory re-write rating is approximately 10,000 times.
GND
2
2.1
Electrical Specification
Absolute Maximum Ratings
Parameter Power Supply Voltage Logic Supply Voltage D0-D7, /WR, /RESET Logic Supply Voltage SIN Symbol Min. -0.3 -0.3 -20.0 Typ. Max. +6.0 Unit
VCC VIN VIN
VDC VDC VDC
VCC+0.3
+20.0
2.2
Electrical Ratings
Parameter Power Supply Voltage Symbol Min. 4.75 Typ. 5.0 Max. 5.25 Unit
VCC
VDC
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CU20027-Y100
2.3
Electrical Characteristics
Measuring Conditions: Ambient temperature = 25 C, VCC = 5.0 VDC
Parameter `L' Level Logic Input Current `H' Level Logic Input Current Logic Input Resistance D0-D7, /WR, /RESET D0-D7 /WR, /RESET SIN D0-D7, /WR `L' Level Logic Input Voltage /RESET SIN `H' Level Logic Input Voltage D0-D7, /WR, /RESET, SIN PBUSY SBUSY PBUSY SBUSY Symbol Min. 3 0 0 -15 0.8xVCC 3.0 0 Typ. 240 200 320 250 25 1.2 1.6 Max. -0.15 5.0 0.25 0.2xVCC 0.8 0.5 Unit mA A A KOhm Condition Note (1) (2) (1) (2) (3) (1) (1)
IIL IIH1 IIH2 RIN VIL1 VIL2 VIL3 VIH1 VIH2 VOL1 VOL2
VIN = 0V VIN = 5V VIN = 5V -
VDC VDC VDC VDC VDC VDC VDC VDC VDC mADC mADC mADC mADC mADC
W W
-
VCC
+15 0.1 0.5 -
IOL = 50A RL = 3KOhm IOH = -50A RL = 3KOhm Brightness 100% Brightness 100% Brightness 200% Brightness 200%
Power Save Mode
`L' Level Logic Output Voltage `H' Level Logic Output Voltage
VOH1 VCC-0.1 VOH2 ICC1-1 ICC2-1
4.0 -
VCC
300 250 400 310 35 1.5 2.0
Power Supply Current
ICC1-2 ICC2-2 ICC3
Power Consumption
-
Brightness 100% Brightness 200%
(1) ICC1 shows the current when all dots in the display are on. (2) ICC2 shows the current when all dots in the display are off. (3) ICC3 shows the current with the Power Save Mode. Power save mode is one of the options of "Screen saver" command. Please refer to "Screen saver" command at Page 30. Note: A slow start power supply may cause erroneous operations. ICC can be approximately twice the specified supply current at power on.
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CU20027-Y100
3
Optical Specifications
Luminance: Color of illumination: Minimum 350 cd/m2, typically 1000 cd/m2 (100% brightness) Typically 2000 cd/m2 (200% brightness) Green (Blue Green)
4
Environmental Specifications
Operating temperature: Storage temperature: Operating humidity: Storage humidity: Vibration: Shock: -40 to +85 C -40 to +85 C 20 to 80 % R.H (non-condensing) 20 to 80 % R.H (non-condensing) 10-55-10Hz, all amplitude 1mm, 30 minutes, X-Y-Z (non-operating) 392m/s2 (40G) 9ms X-Y-Z, 3 times each direction (non-operating)
5
Physical Specifications
Number of characters: Matrix format: Display area: Character size: Character pitch: Line pitch: Dot size: Dot pitch: Weight: 4020 characters x 2 lines 5 x 8 dots 73.4 x 15.0 mm (X x Y) 2.72 x 7.19 mm (X x Y) 3.72 mm 7.81 mm 0.44 x 0.785 mm (X x Y) 0.57 x 0.915 mm (X x Y) Approximately 48 g
6
Applicable Specifications
Applicable reliability spec: Applicable production spec: TT-99-3102 TT-98-3413
7
Interface
Parallel Interface: i80 type 8bit bus(C MOS Signal level) Serial Interface: Asynchronous(RS232 level)
The module cannot receive both serial and parallel data at the same time.
8 bit Parallel Interface
8bit DATA
Asynchronous Serial Interface
SIN
Host System
WR PBUSY
Y series Display Module
Host System
SBUSY
Y series Display Module
Monitoring the busy line is strongly recommended, because it prevents data loss and minimizes a waiting time to write next data.
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CU20027-Y100
7.1
Parallel Interface
7.1.1 Basic Operation
Data (D0-D7) has to be set prior to a rising edge of /WR line, and the data is clocked in on the rising edge of /WR line. During data execution, the parallel busy line is high (PBUSY=1). Writing data when PBUSY = 1 causes data loss, so please write data when PBUSY = 0.
7.1.2 Flowchart
Start to send data
PBUSY = 0?
NO
YES /WR = 0
Set D0-D7
/WR = 1
Wait (Min. 20uS)
Continue to send data ? YES
NO
End
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CU20027-Y100
7.1.3 Interface Timing
Min. 100ns 1
/WR
0 Min. 50ns 1 Min. 20000ns
D0-D7
0 Max. 40ns 1 Min. 0ns
PBUSY
0
Note: Monitoring the parallel busy line (PBUSY) is strongly recommended, because it prevents data loss and minimizes a waiting time to write next data. Please write data when PBUSY = 0.
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CU20027-Y100
7.2
Serial Interface
7.2.1 Basic Operation
Default setting: Asynchronous Serial Interface (Baud rate = 38,400bps) The capacity of the receiving buffer is 64 bytes. The relationship between SBUSY and the receiving buffer is as follows; Remaining space of receiving buffer SBUSY 0 -> 1 SBUSY 1 -> 0 16 byte or less 24 byte or more
Writing data when SBUSY = 1 may cause data loss, so please write data when SBUSY = 0.
7.2.2 Flowchart
Start to send data
NO
SBUSY = 0?
YES
Send one byte data
Continue to send data ?
NO
YES
End
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CU20027-Y100
7.2.3 Asynchronous Serial Interface Timing 7.2.3.1 Data write
0
SIN
1 Max. 30s 0 Min. 0s
SBUSY
1
Protocol:
Baud rate Parity Format Handshake 9,600 115,200bps (Selectable by Jumper) Default: 38,400bps None Start (1bit)Data (8bit)Stop (1bit) SBUSY
Note: Monitoring the serial busy line (SBUSY) is strongly recommended, because it prevents data loss and minimizes a waiting time to write next data. Please write data when SBUSY = 0. 7.2.3.2
Data read
This is used for Read states information command only.
0
SIN
1 Min. 20s 0 Min. 0s Min. 0s
SOUT
1
Protocol: Baud rate Parity Format Handshake 9,600 115,200bps (Selectable by Jumper) Default: 38,400bps None Start (1bit)Data (8bit)Stop (1bit) None
Note: Output data is transferred collectively from a VFD module, so a receiving buffer may be required on a host system to prevent data loss.
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CU20027-Y100
7.3
Reset Timing
Reset pulse (active low) should be longer than 1ms. The module sets the SBUSY/PBUSY line upon receipt of Reset signal and clears the line when ready to receive data. Min. 1ms
/RESET
Max. 100ms
PBUSY SBUSY
Min. 0s
SIN
Min. 0s
/WR
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CU20027-Y100
8
8.1
Jumper Setting
Jumper location
Components side J2* J1 J0 BT* JT
CN1 CN3
Note: Jumper "J2" and "BT" is for factory use only. Please do not change.
8.1.1 Baud Rate Setting (for Asynchronous Serial Interface only)
Baud Rate 38,400bps (Default) 19,200bps 9,600bps 115,200bps J0 OPEN SHORT OPEN SHORT J1 OPEN OEPN SHORT SHORT
8.1.2 Test Mode
Refer to "9.4 Test mode".
Mode Direct Command Mode (Default) Test Mode JT OPEN SHORT
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CU20027-Y100
9
Operating Mode
This module has the following operating modes which are selectable by commands or jumper setting. Power ON
OPEN SHORT NO
JT
Initial State
Direct Commnad Mode
Asynchronous Serial Interface
YES
Test Mode
Serial OUT Mode
User Set up Mode
9.1
Direct Command Mode
The module accepts data and all commands except "13.3.40 User setup mode end", "13.3.41 Define FROM user font", "13.3.42 Read status information", "13.3.43 Display status information", and "13.3.45 Serial OUT mode end".
9.2
User Set up Mode
Under this mode, an on-board flash memory is accessible. The module accepts only three commands: "13.3.40 User set up mode end", "13.3.41 Define FROM user font" and "13.3.43 Display status information".
9.3
Serial OUT Mode
Under this mode, status information is readable via Asynchronous Serial Interface. The module accepts only two commands: "13.3.42 Read status information" and "13.3.45 Serial OUT mode end".
9.4
Test mode
The module does not accept any commands but displays test-patterns. Test purpose only.
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CU20027-Y100
10
Font Table Configuration
This display's Font Table (20h-FFh) is configured as follows. The configuration can be changed by command. The Font Table used in the default state is as follows.
13.3.20 Specify International font set 1Bh 52h n
13.3.30 Specify character code type 1Bh 74h n
For font pattern details, refer to font spec. DS-1519-0002-xx.
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CU20027-Y100
11
Display Area-End of Line Behavior
In most cases, a cursor moves to the next position after a character is displayed on the current cursor position, but some exceptional cases exist. At end of line, the next behavior of a display area depends on the current cursor position, character size and display mode. Display area behaviors for some magnified character sizes are as follows: Regular size (1x1) characters (Over-write mode)
Right Most Column
Lower Most Row Current Cursor Position The next cursor position is here.
1x2 Magnified characters (Over-write mode)
Right Most Column
Lower Most Row
The next cursor position is here.
Current Cursor Position
2x2 Maginified characters (Over-write mode)
Right Most Column
Lower Most Row
The next cursor position is here.
Current Cursor Position Right Most Column Dead Space
2x2 Maginified characters (Over-write mode)
Lower Most Row The next cursor position is here. The next 2x2 magnified character is displayed here. Current Cursor Position
It is possible to display a regular size (1x1) characrer in the dead space.
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CU20027-Y100
12
Initial setting
Initial states are set as follows. "Initialize display" command External reset or "Reset" command Home position Disable Underline cursor Over-write mode Quick write mode America PC437(USA - Euro std) Character blink mode OFF Underline display mode OFF Level 8 (100%) 100% 40h Instantaneous (n=00h) Cleared Stopped 5x8 Matrix font Normal font Re-loaded Re-loaded x=1, y=1 Not re-loaded Re-loaded Not re-loaded Re-loaded Re-loaded Re-loaded "User set up mode end" command
Power on Cursor position RAM user font Cursor display Display mode Write mode International font set Character code type Character blink mode Underline display mode Individual Character Brightness Level Setting Brightness level Blink speed Horizontal scroll speed RAM User font data Blink display action (at c=00h) Select/Deselect 5x8 Matrix font Select/Deselect Alternative Magnified Font Font Magnification Baud rate (J0, J1) Test mode (JT)
13
13.1
Commands
This display's command is configured as following group.
Command Configuration
08H-16H 1BH ... 1FH ... 1FH 28H 61H ... 1FH 28H 65H ... 1FH 28H 67H ... 20H-FFH Control command ESC command User Setup command Action command Operation mode-related command Character-related command Character code
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CU20027-Y100
13.2
Command Set
Command Name BYTE1 BYTE2
25h 26h 3Fh 40h 41h 42h 45h 52h 53h 54h 55h 57h
BYTE3
01h 01h F3h F4h F5h F6h FFh 61h
Hex Code BYTE4 Parameter
01h 11h 40h 01h 02h 14h 40h 41h 83h 84h 04h 06h 40h 50h n c1 c2 [x1 d1...d(a X x1)]... [xk d1...d(a X xk)] c n s n xL 00h yL 00h t p t1 t2 c p d1 d2 d1 d2 d3 P(20h-1) P(20h-2)...P(FFh-5) a [b c d e] a d1 d2 d1 d2 d3 d s xy d1 d2 d3 n n
Back Space Horizontal Tab Line Feed Home Position Display Clear Carriage Return Underline cursor mode Cursor off mode Block cursor mode Underline cursor blink mode RAM user font Define RAM user font Delete RAM user font Initialize display Character blink mode OFF Character blink mode ON Specify quick write mode Specify International font set Specify flickerless write mode Blink speed control Underline display mode ON Underline display mode OFF Insert character Delete character Insert line Delete line Reset Specify character code type Over-write mode Vertical scroll mode Horizontal scroll mode Cursor set Wait Display blink Screen saver User set up mode start User set up mode end Define FROM user font Read Status information Display Status information Serial OUT mode start Serial OUT mode end Select / Deselect 5x8 Matrix font Select/Deselect Alternative Magnified Font Font Magnification Individual Character Brightness Level Setting Brightness level setting Horizontal scroll speed Character display
08h 09h 0Ah 0Bh 0Ch 0Dh 13h 14h 15h 16h
1Bh
58h
74h 01h 02h 03h 24h
1Fh 28h
65h
67h
20-FFh
58h 73h

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CU20027-Y100
13.3
Detail of Command Set
13.3.1 Character display
Code: 20h - FFh Please refer to "11 Display Area-End of Line Behavior" before reading. Function: Display a character on the current cursor position. The details of operation are as follows: When "Over-write mode" is selected. Current cursor position X position (Column) Y position (Row)
Excluding right most column - Excluding lower most row Right most column Lower most row 1. 2. 1. 2.
Operations
Display a character on the current cursor position. Increment the cursor to the right by one column. Display a character on the current cursor position. Move the cursor to left most column of next lower row. 1. Display a character on the current cursor position. 2. Move the cursor to the home position (left most column of upper most row).
When "Vertical scroll mode" is selected. Current cursor position X position (Column) Y position (Row)
Excluding right most column - Excluding lower most row Right most column Lower most row 1. 2. 1. 2. 1. 2. 3. 4.
Operations
Display a character on the current cursor position. Increment the cursor to the right by one column. Display a character on the current cursor position. Move the cursor to left most column of next lower row. Display a character on the current cursor position. Clear upper most row. Shift all rows up by one to make lower most row clear. Move the cursor to left most column of lower most row.
When "Horizontal scroll mode" is selected.
Cursor position X direction
Excluding right most column Right most column
Y direction
-
Operations
1. Display a character on the current cursor position. 2. Increment the cursor to the right by one column. 1. Display a character on the current cursor position. 2. Move to Scroll ON mode. Note: The cursor does not move.
Operations
Scroll ON mode 1. Shift only the current row left by one column to make a space for the next character. 2. Display a character on the space Note: The cursor does not move.
Note:
Scroll ON mode is cancelled if any of the following commands are executed: "Back Space", "Line Feed", "Home Position", "Display Clear", "Carriage Return", "Cursor Set", "Over-write mode", "Vertical scroll mode", "Horizontal scroll mode", "Insert character", "Delete character", "Insert line" and "Delete line".
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CU20027-Y100
13.3.2 Back Space
Code: 08h Please refer to "11 Display Area-End of Line Behavior" before reading. Function: The cursor moves to the left by one character. The details of operation are as follows: When "Over-write mode" or "Vertical scroll mode" is selected. Current cursor position X direction (Column) Y direction (Row)
Excluding left most column Left most column Excluding upper most row Upper most row
Operations
1. Decrement the cursor to the left by one column. 1. Move the cursor to right most column of next upper row. No operation
When "Horizontal scroll mode" is selected. Current cursor position X direction (Column) Y direction (Row)
Excluding left most column Left most column -
Operations
1. Decrement the cursor to the left by one column. No operation
13.3.3 Horizontal Tab
Code: 09h Please refer to "11 Display Area-End of Line Behavior" before reading. Function: The cursor moves to the right by one character. The details of operation are as follows: When "Over-write mode" is selected. Current cursor position X direction (Column) Y direction (Row)
Excluding right most column Right most column Lower most row Excluding lower most row
Operations
1. Increment the cursor to the right by one column. 1. Move the cursor to left most column of next lower row. 1. Move the cursor to the home position (left most column of upper most row).
When "Vertical scroll mode" is selected. Current cursor position X direction (Column) Y direction (Row)
Excluding right most column Excluding lower most row Right most column Lower most row
Operations
1. Increment the cursor to the right by one column. 1. Move the cursor to left most column of next lower row. 1. Clear upper most row. 2. Shift all rows up by one to make lower most row clear. 3. Move the cursor to left most column of lower most row.
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CU20027-Y100
When "Horizontal scroll mode" is selected. Current cursor position X direction (Column) Y direction (Row)
Excluding right most column Right most column -
Operations
1. Increment the cursor to the right by one column. 1. Shift only the current row left by one column. 2. Keep executing this operation (Scroll ON mode). Note: The cursor does not move.
Note:
Scroll ON mode is cancelled if any of the following commands are executed: "Back Space", "Line Feed", "Home Position", "Display Clear", "Carriage Return", "Cursor Set", "Over-write mode", "Vertical scroll mode", "Horizontal scroll mode", "Insert character", "Delete character", "Insert line" and "Delete line".
13.3.4 Line Feed
Code: 0Ah Please refer to "11 Display Area-End of Line Behavior" before reading. Function: The cursor moves to next lower line. The details of operation are as follows: When "Over-write mode" is selected. Current cursor position X direction (Column) Y direction (Row)
Excluding lower most row Lower most row
Operations
1. Move the cursor to the same column of next lower row. 1. Move the cursor to the home position (left most column of upper most row).
When "Vertical scroll mode" is selected. Current cursor position X direction (Column) Y direction (Row)
Excluding lower most row Lower most row
Operations
1. Move the cursor to the same column of next lower row. 1. Clear upper most row. 2. Shift all rows up by one to make lower most row clear. Note: The cursor does not move.
When "Horizontal scroll mode" is selected. Current cursor position X direction (Column) Y direction (Row)
-
Operations
No operation
13.3.5 Home Position
Code: 0Bh Function: Cursor moves to the home position. (the left end of top line).
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CU20027-Y100
13.3.6 Display Clear
Code: 0Ch Function: Display is cleared and cursor moves to home position.
13.3.7 Carriage Return
Code: 0Dh Function: Cursor moves to left end of same line.
13.3.8 Underline cursor mode
Code: 13h Function: Cursor is displayed as underline.
13.3.9 Cursor off mode
Code: 14h Function: Cursor display is OFF.
13.3.10 Block cursor mode
Code: 15h Function: Cursor is displayed as a block, blinking. Blinking speed can be varied by "Blink Speed Control" command.
13.3.11 Underline cursor blink mode
Code: 16h Function: Cursor is displayed as underline, blinking. Blinking speed can be varied by "Blink Speed Control" command.
13.3.12 Cursor set
Code: 1Fh 24h xL 00h yL 00h xL: Cursor position x Lower byte (1 char /unit) yL: Cursor position y Lower byte (1 line /unit) Definable area: 0 (00h) xL 19 (13h) 0 (00h) yL 1 (01h) Function: The cursor moves to the specified X, Y position. If the specified X, Y position (X, Y, either or both) is outside the definable area, the command is ignored, and the cursor remains in the same position.
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CU20027-Y100 x 00h 00h

y
01h

12h

13h

01h

13.3.13 Initialize display
Code: 1Bh 40h Function: Clear display and return settings to initial state. Software settings return to power-on state. Jumper settings are not re-loaded
13.3.14 RAM user font
Code: 1Bh 25h n Function: Enable or disable for RAM user font. n = 01h, 31h: Enable (If RAM user font is not defined for a character code, built-in character is displayed) n = 00h, 30h: Disable (RAM user font already defined are not affected) Initial value: n = 00h Characters already displayed are not affected. In case of user font enable (n=01h, 31h), RAM user font is used for character codes defined using "Define RAM user font" command regardless of the state of various other settings.
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CU20027-Y100
13.3.15 Define RAM user font
Code: 1Bh 26h a c1 c2 [x1 d1...d(axx1)]...[xk d1...d(axxk)] a: Select character type c1: Start character code c2: End character code x: Number of dot for X direction d: Defined data Definable area: a = 1 (01h) 32 (20h) c1 c2 255 (FFh) x = 5 (05h) 0 (00h) d 255 (FFh) k = c2 - c1 + 1 Function: Define user font into RAM. A maximum of 16 characters may be defined. After the first 16 are defined, any additional user font characters required must replace one already defined. To display RAM user font characters, execution of "Define RAM user font" and "RAM user font" command is required. If a RAM user font character that is currently being displayed is re-defined, the currently-displayed character also changes to the new RAM user font character. < RAM User font data format>
P1 P6 P11 P16 P21 P26 P31 P36 P2 P7 P12 P17 P22 P27 P32 P37 P3 P8 P13 P18 P23 P28 P33 P38 P4 P9 P14 P19 P24 P29 P34 P39 P5 P10 P15 P20 P25 P30 P35 P40
5x8 dot assignment
1st byte 2nd byte 3rd byte 4th byte 5th byte
B7(MSB) P8 P16 P24 P32 P40
B6 P7 P15 P23 P31 P39
B5 P6 P14 P22 P30 P38
B4 P5 P13 P21 P29 P37
B3 P4 P12 P20 P28 P36
B2 P3 P11 P19 P27 P35
B1 P2 P10 P18 P26 P34
B0(LSB) P1 P9 P17 P25 P33
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CU20027-Y100
13.3.16 Delete RAM user font
Code: 1Bh 3Fh a c a: Select character c: Character code to delete Definable area: a = 1 (01h) 32 (20h) c 255 (FFh) Function: Delete defined RAM user font character. The built-in character is displayed after this command is executed. If the RAM user font character is currently being displayed, the display changes to built-in character (according to the current settings for "Specify international font set" and "Specify character code type" command). This command is ignored if character code for RAM user font is not defined.
13.3.17 Character blink mode OFF
Code: 1Bh 41h Function: Cancel character blink mode. Blinking stops for characters written after this command is executed. Characters already displayed are not affected.
13.3.18 Character blink mode ON
Code: 1Bh 42h Function: Specifies character blink mode. Blinking starts for characters written after this command is executed. Characters already displayed are not affected. Blinking speed can be varied by "Blink speed control" command.
13.3.19 Specify quick write mode
Code: 1Bh 45h Function: Specifies quick write mode. Quick data write with minimum BUSY time will be provided by this mode because data acceptance is given priority over refreshing of the screen. Note: Within this mode, continuous high speed data write may cause display to flicker. Blinking speed may deviate from set speed. The figure in 13.3.21 Specify flickerless write mode shows the difference between Flickerless Mode and Quick Write Mode.
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CU20027-Y100
13.3.20 Specify International font set
Code: 1Bh 52h n
n 00h 01h 02h 03h 04h 05h 06h 07h 08h 09h 0Ah 0Bh 0Ch 0Dh Font set America France Germany England Denmark 1 Sweden Italy Spain1 Japan Norway Denmark2 Spain2 Latin America Korea
Definable area: 0 (00h) n 13 (0Dh) Default: n = 0 (00h) Function: Select international font set. Does not affect characters already displayed. Note: Refer to 10 Font Table Configuration at page 14.
13.3.21 Specify flickerless write mode
Code: 1Bh 53h Function: Specifies flickerless write mode. Within flickerless mode, although BUSY might become longer, flicker-less high-speed continuous data write can be achieved since refreshing of screen is given priority over data acceptance. Note: The following figure shows the difference between Flickerless Mode and Quick Write Mode. Refer to 13.3.19 Specify quick write mode.
Command/Data 1 Flickerless Mode
Command/ Data 2
Screen Refreshing
Command/data processing
Comma nd/Da ta 1
S T O P
S T O P
S T O P
Command/ Data 2
Quick Write Mode
Screen Refreshing
Command/data processing
Command/Data 1
Command/ Data 2
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CU20027-Y100
13.3.22 Blink speed control
Code: 1Bh 54h s s: Blinking speed Definable area: 0 (00h) s 255 (FFh) 00h, FFh 128x13.5ms (Typ.) FEh, FDh127x13.5ms (Typ.) : : 02h, 01h 1x13.5ms (Typ.) Default: s = 40h (32 X 13.5ms) Function: Specifies blinking speed for block cursor, underline cursor blink, and character blink.
13.3.23 Underline display mode ON
Code: 1Bh 55h Function: Specifies underline display mode. Characters written after this command are displayed with underline. Characters already displayed are not affected. Note: The underline changes an impression of characters on a display. Please refer to the following sample pictures. 5x8 font without underline 5x8 font with underline 5x7 font with underline
13.3.24 Underline display mode OFF
Code: 1Bh 57h Function: Cancel underline display mode. Characters written after this command are displayed with no underline. Characters already displayed are not affected.
13.3.25 Insert character
Code: 1Bh 58h F3h Function: Characters from cursor position to right end of same line move to the right by one character. The right-most character is discarded. One-character blank (space) is set at cursor position. Cursor does not move. Command is ignored if there is insufficient space in the x and/or y direction for one character at the current cursor position.
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CU20027-Y100
13.3.26 Delete character
Code: 1Bh 58h F4h Function: Character at cursor position is deleted, and display from there to right end of same line moves to the left by one character. One-character blank (space) is set at right end of same line. Cursor does not move. Command is ignored if there is insufficient space in the x and/or y direction for one character at the current cursor position.
13.3.27 Insert line
Code: 1Bh 58h F5h Function: Display contents for the line of the current cursor position, and all lower lines, are shifted down by one line. The line of the current cursor position is blanked (space), and cursor position is set to left end of same line. Display contents in the bottom line are discarded. Command is ignored if there is insufficient space in the x and/or y direction for one character at the current cursor position.
13.3.28 Delete line
Code: 1Bh 58h F6h Function: The line of the current cursor position is deleted, and the below display is moved up by one line. Cursor position does not change. Bottom line is blanked (space). Command is ignored if there is insufficient space in the x and/or y direction for one character at the current cursor position.
13.3.29 Reset
Code: 1Bh 58h FFh Function: Transition to state immediately after power-on. Jumper settings are re-loaded; baud rate (for asynchronous serial), and test mode setting.
13.3.30 Specify character code type
Code: 1Bh 74h n Definable area: n = 0(00h), 1(01h), 2(02h), 3(03h), 4(04h), 5(05h), 16(10h), 17(11h), 18(12h), 19(13h), 255(FFh) Default: n = 0 Function: Selects font code Characters already displayed are not affected. Note: Refer to 10 Font Table Configuration at page 14.
n 00h 01h 02h 03h 04h 05h 10h 11h 12h 13h FFh Font code type PC437(USA - Euro std) Katakana - Japanese PC850 (Multilingual) PC860 (Portuguese) PC863 (Canadian-French) PC865 (Nordic) WPC1252 PC866 (Cyrillic #2) PC852 (Latin 2) PC858 FROM User font table
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CU20027-Y100
13.3.31 Over-write mode
Code: 1Fh 01h column of lower most row, move the cursor to the home position. Note: For further information of this command, please refer to "13.3.1 Character display", "13.3.2 Back Space", "13.3.3 Horizontal Tab" and "13.3.4 Line Feed". Function: Overwrite or replace an existing character. After replacing the character at right most
13.3.32 Vertical scroll mode
Code: 1Fh 02h column of lower most row, shift all rows up by one to make lower most row clear. Note: For further information of this command, please refer to "13.3.1 Character display", "13.3.2 Back Space", "13.3.3 Horizontal Tab" and "13.3.4 Line Feed". Function: Overwrite or replace an existing character. After replacing the character at right most
13.3.33 Horizontal scroll mode
Code: 1Fh 03h column of any row, shift only the current row left by one column to make a space for the next character. Note: For further information of this command, please refer to "13.3.1 Character display", "13.3.2 Back Space", "13.3.3 Horizontal Tab" and "13.3.4 Line Feed". Function: Overwrite or replace an existing character. After replacing the character at right most
13.3.34 Horizontal scroll speed
Code: 1Fh 73h n Definable area: 0 (00h) n 31 (1Fh) Default: n = 0 (00h) Note: Next command is not executed until scrolling action is finished.
If n=0 is specified, scrolling is appeared by character n 00h 01h - 1Fh
Speed Instantaneous nx13.5ms (Typ.)
13.3.35 Brightness level setting
Code: 1Fh 58h n
n 01h or 31h 02h or 32h 03h or 33h 04h or 34h 05h or 35h 06h or 36h 07h or 37h 08h or 38h Brightness level 25 % 50 % 75 % 100 % 125 % 150 % 175 % 200 %
n: Brightness level setting Definable area: 1 (01h) n 8 (08h)49 (31h) n 56 (38h) Default: n = 4 (04h) Function: Specify display brightness level.
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CU20027-Y100
13.3.36 Wait
Code: 1Fh 28h 61h 01h t t: Wait time Definable area: 0 (00h) t 255 (FFh) Function: Wait for the specified period of time. Command and data processing is suspended. Wait time = t X approx. 0.5sec
13.3.37 Display blink
Code: 1Fh 28h 61h 11h p t1 t2 c p: Blink pattern t1: Normal display time t2: Blank display time c: Number of repetition Definable area: 0p1 p=0: A display is not affected. p=1: Repeat blink display with normal and blank display 1 (01h) t1 255 (FFh) 1 (01h) t2 255 (FFh) 0 (00h) c 255 (FFh) Function: Blink display action Blink pattern specified by "p". Time specified by "t1", "t2", and repeat Blink display A : t1 X 13.5 ms (Typ.) Normal display B : t2 X 13.5 ms (Typ.) Blank display This command does not affect the display memory. If c=0 is specified, blinking continues during subsequent command/data processing, until c=1 - 255 or Initialize command is specified. If c=1 - 255 is specified, blink display is repeated 1 - 255 times while command/data execution is stopped. After display blinking is ended, normal display and command/data execution is resumed. During display blinking, Block cursor, Underline cursor blink and Character blink stops. After blink action, blinking speed for Block cursor, Underline cursor blink and Character blink change to t1 and t2 as set in blink action command.
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CU20027-Y100
13.3.38 Screen saver
Code: 1Fh 28h 61h 40h p p: Screen saver mode Definable area: 0 (00h) p 3 (03h), 48 (30h) p 51 (33h) p=00h or 30h: Power OFF (display OFF, Power save mode) p=01h or 31h: Power ON (display ON) p=02h or 32h: All dots OFF p=03h or 33h: All dots ON Function: Control power ON or OFF, and start screen saver mode. p=00h, 01h, 30h, 31h: Control power ON or OFF. This is applied until this command is re-specified p=02h, 03h, 32h, 33h: Start screen saver mode. When next command or data is inputted, screen saver is cancelled, and previous display condition is resumed. All dots ON is at gray-shade level 8 (100%), regardless of the setting before Screen saver action.
13.3.39 User set up mode start
Code: 1Fh 28h 65h 01h 49h 4Eh Definable area: d1 = 49h Character "I" d2 = 4Eh Character "N" Function: Start user set up mode. This command is only valid in Direct Command mode. Display screen is cleared and normal commands stop being accepted.
13.3.40 User set up mode end
Code: 1Fh 28h 65h 02h 4Fh 55h 54h Definable area: d1 = 4Fh Character "O" d2 = 55h Character "U" d3 = 54h Character "T" Function: End user set up mode, and software reset of display is executed. This command is only valid in user setup mode. After this command is executed, software reset is executed, the receiving buffer is cleared, and all settings and display are reset to a power-on condition. Jumper settings are re-loaded; baud rate (for asynchronous serial), and test mode setting.
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CU20027-Y100
13.3.41 Define FROM user font
Code: 1Fh 28h 65h 14h P(20h-1) P(20h-2)...P(FFh-5) P: Definition data Definable area: 0 (00h) P 255 (FFh) Function: Define the 1 byte user font to the user font table in FROM. All 224 characters should be defined at once; it is not possible to only define some part of the FROM user font address space. Contents of FROM user font table are not defined when shipped. This command is only valid in user setup mode. Data defined by this command is retained even if power is turned off. Display power is switched OFF during processing of this command. The display screen is cleared and display power is turned on again after this command is executed. To display FROM user font characters, "Specify character code type" command (n=FFh) must be executed. Please follow the procedures to define and display FROM user font characters.
(1) "User set up mode start" command (2) "Define FROM user font" command (3) "User set up mode end" command (4) "Specify character code type" command Code: 1Fh 28h 65h 01h 49h 4Eh Code: 1Fh 28h 65h 14h P(20h-1) P(20h-2)...P(FFh-5) Code: 1Fh 28h 65h 02h 4Fh 55h 54h Code: 1Bh 74h FFh (20h-1)...P(20h-5)......P(FFh-5) 5 Bytes / font x 224 characters (1120 bytes)
5x8 dot assignment
P1 P6 P11 P16 P21 P26 P31 P36 P2 P7 P12 P17 P22 P27 P32 P37 P3 P8 P13 P18 P23 P28 P33 P38 P4 P9 P14 P19 P24 P29 P34 P39 P5 P10 P15 P20 P25 P30 P35 P40 B6 P7 P15 P23 P31 P39 B5 P6 P14 P22 P30 P38 B4 P5 P13 P21 P29 P37 B3 P4 P12 P20 P28 P36 B2 P3 P11 P19 P27 P35 B1 P2 P10 P18 P26 P34 B0(LSB) P1 P9 P17 P25 P33
P(XXh-1) P(XXh-2) P(XXh-3) P(XXh-4) P(XXh-5)
B7(MSB) P8 P16 P24 P32 P40
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CU20027-Y100
13.3.42 Read Status information
Code: 1Fh 28h 65h 40h a [ b c d e ] Definable area: a =2 (02h), 32 (20h), 48 (30h), 128 (80h) a= 02h : Firmware version information (b, c, d, e are not used) a= 20h : Memory checksum information 0000h ( b + c x 100h ) FFFFh : Start address 0000h ( d + e x 100h ) FFFFh : Data length a= 30h : Product type information (b, c, d, e are not used) a= 80h : User font information (c, d, e are not used) 20h b FFh Character code Function: Respond with the requested display status information. The following data are sent from Asynchronous serial interface This command is only valid in Serial OUT mode.
Send data 1: Header 2: Identifier 1 3: Identifier 2 4: Data Hex 28h 65h 40h 00hFFh Number of data 1byte 1byte 1byte a = 02h : 4 bytes a = 20h : 4 bytes a = 30h : 11 bytes a = 80h : 5 bytes
13.3.43 Display Status information
Code: 1Fh 28h 65h 41h a Definable area: a =2 (02h), 32 (20h), 33 (21h) a= 02h : Firmware version a= 20h : Firmware checksum a= 30h : User font table checksum P(20h-1)...P(FFh-5) Function: Display on home position the requested status information. This command is only valid in user setup mode.
13.3.44 Serial OUT mode start
Code: 1Fh 28h 65h 83h d1 d2 Definable area: d1 = 49h Character "I" d2 = 4Eh Character "N" Function: Switch SBUSY to Serial OUT and start "Serial OUT mode". This command is only valid when Asynchronous serial interface is selected and mode is Direct Command mode. Display screen is cleared and normal commands stop being accepted. Wait at least 5ms after sending 4Eh ("N") before sending next data. During Serial OUT mode, do not use SBUSY for communication flow control.
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CU20027-Y100
13.3.45 Serial OUT mode end
Code: 1Fh 28h 65h 84h d1 d2 d3 Definable area: d1 = 4Fh Character "O" d2 = 55h Character "U" d3 = 54h Character "T" Function: Switch Serial OUT to SBUSY and start "Direct Command mode". This command is only valid in Serial OUT mode. After "Serial OUT mode end" command is executed, SBUSY=0 (READY) until receipt of next data. Wait at least 5ms after sending 54h ("T") before sending next data.
13.3.46 Select / Deselect 5x8 Matrix font
Code: 1Fh 28h 67h 04h d d: Select / Deselect 5x8 Matrix font Definable area: 128 (80h) d 129 (81h) d = 80hDeselect 5x8 Matrix font d = 81hSelect 5x8 Matrix font Default: d = 81h (Select 5x8 Matrix font) Function: Select / Deselect 5x8 Matrix font Selecting 5x8 Matrix font gives decender to only these five characters: `g' (67h), `j' (6Ah), `p' (70h), `q' (71h) and `y' (79h). Both 5x8 font and 5x7 font give the same style fonts to the other characters. d=81h: The five characters are displayed in 5x8 font after this command. Characters already displayed are not affected. For details of each pattern, refer to font spec. DS-1519-0002-xx.
5 Char 10 Char 15 Char 20 Char
5x8 Font
5x7 Font
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CU20027-Y100
13.3.47 Select/Deselect Alternative Magnified Font
Code: 1Fh 28h 67h 06h s s: Select/Deselect Alternative Magnified Font Definable area: 0 (00h) s 1 (01h) s = 00hNormal font s = 01hAlternative Magnified font Default: s = 00h Function: Select Alternative Magnified font to improve legibility for Font magnified display. This command is valid for characters written after this command execution; it does not affect characters that are already displayed. Alternative Magnified font is only used when magnification is x=2X, y=2X. At all other times, normal font is used regardless of this setting. Applicable characters are only for International font set "America" (n=00h). For all other fonts, normal font is used regardless of this setting. When FROM user font table ("Specify character code type" command) is selected, user font characters have priority, regardless of this setting. Note: Refer to the DS-1519-0002-xx CU-Y Series VFD character fonts specification. In case of character "1"

Normal font
Alternative Magnified font
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CU20027-Y100
13.3.48 Font Magnification
Code: 1Fh 28h 67h 40h x y x: Specify the size of magnification X y: Specify the size of magnification Y Definable area: 1 (01h) x 2 (02h) 1 (01h) y 2 (02h) Default: x = 01h y = 01h Function: Magnify the character by x times on the right, y times downward. This command is valid for characters written after this command execution; it does not affect characters that are already displayed. x=2, y=1 is not supported (command will be ignored). 1x1 magnification (default) 1x2 magnification 2x2 magnification
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CU20027-Y100
13.3.49 Individual Character Brightness Level Setting
Code: 1Fh 28h 67h 50h d1 d2 d3 d1: Gray-shade level d2: Dummy data d3: Dummy data Definable area: 1 (01h) d1 8 (08h), 49 (31h) d1 54 (38h) D1 Level 01h or 31h Level 1 (0%) 02h or 32h Level 2 (14%) 03h or 33h Level 3 (29%) 04h or 34h Level 4 (43%) 05h or 35h Level 5 (57%) 06h or 36h Level 6 (71%) 07h or 37h Level 7 (86%) 08h or 38h Level 8 (100%) 0 (00h) d2 255 (FFh) 0 (00h) d3 255 (FFh) Default: d1 = 8 (08h) Function: Specify gray-shade level of characters. This command is valid for characters written after this command execution; it does not affect characters that are already displayed. Note: This individual character brightness is a relative value of allover display brightness. If the display brightness level and the individual matrix brightness level are 200% (2,000 cd/m2) and Level 5 (57%) respectively, the individual character brightness is 2,000 cd/m2 x 57% = 1,140 cd/m2. In order to set allover the display brightness, please refer to the command "13.3.35 Brightness level setting". Level 1 (0%) Level 2 (14%) Level 3 (29%) Level 4 (43%) Level 5 (57%) Level 6 (71%) Level 7 (86%) Level 8 (100%)
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CU20027-Y100
14
14.1
Pin No. 1 2 3 4 5 6 7
Pin Configuration
Parallel interface connecter (Fourteen through-holes / CN1)
Signal name GND VCC PBUSY /RESET /WR NC D0 Function Ground Power supply Display busy Reset Data write Non connection Data input (LSB) Direction Output Input Input Input Pin No. 8 9 10 11 12 13 14 Signal name D1 D2 D3 D4 D5 D6 D7 Function Data input Data input Data input Data input Data input Data input Data input (MSB) Direction Input Input Input Input Input Input Input
14.2
Serial interface connector (Six through-holes / CN3)
Pin No. 1 2 3 4 5 6 Signal name VCC SIN GND SBUSY NC /RESET Function Power supply Data receive Ground Display busy Non connection Reset Direction Input Output Input
15
Firmware Version Notation
The firmware version is shown in the following position.
VFD
CN1 CN3
CU20027-Y100 xxxxx Fnnn
Part Number Date Code
Firmware Version
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CU20027-Y100
16
Physical Dimensions
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CU20027-Y100
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 30100 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.
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CU20027-Y100
Revision Note
SPEC number
DS-1571-0001-00
Date
Jan.29, 2009 Initial Issue
Revision
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