CU20027-YX1A - Noritake - Product.Network

Vacuum Fluorescent Display

Module

Specification

Model: CU20027-YX1A

Specification No: DS-1577-0001-00

Date of Issue: March 16, 2010 (00)

Revision:

Published by

NORITAKE ITRON CORP. / Japan

http://www.noritake-itron.jp

This specification is subject to change without prior notice.

RoHS 2002/95/EC

This product complies with RoHS Directive 2002/95/EC

CU20027-YX1A

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Index

1 General Description ..................................................................................................................... 4

1.1 Scope ................................................................................................................................... 4

1.2 Features ............................................................................................................................... 4

1.3 Hardware Configuration ....................................................................................................... 5

2 Electrical Specifications .............................................................................................................. 5

2.1 Absolute Maximum Ratings ................................................................................................. 5

2.2 Electrical Ratings ................................................................................................................. 5

2.3 Electrical Characteristics ..................................................................................................... 6

3 Environmental Specifications ..................................................................................................... 6

4 Optical Specifications .................................................................................................................. 7

5 Physical Specifications ................................................................................................................ 7

6 Applicable Specifications ............................................................................................................ 7

7 Interface ......................................................................................................................................... 7

7.1 Parallel Interface .................................................................................................................. 8

7.1.1 Basic Operation ................................................................................................................ 8

7.1.2 Flowchart ........................................................................................................................... 8

7.1.3 Interface Timing ................................................................................................................ 9

7.2 Serial Interface ................................................................................................................... 10

7.2.1 Basic Operation .............................................................................................................. 10

7.2.2 Flowchart ......................................................................................................................... 10

7.2.3 Asynchronous Serial Interface Timing ......................................................................... 11

7.2.3.1 Data write ................................................................................................................ 11

7.2.3.2 Data read ................................................................................................................ 11

7.2.4 Synchronous Serial Interface Timing ........................................................................... 12

7.3 Reset Timing ...................................................................................................................... 12

8 Jumper Setting............................................................................................................................ 13

8.1 Jumper location ................................................................................................................. 13

8.1.2 Serial Synchronous / Asynchronous Interface Select ................................................ 13

8.1.3 Test Mode ........................................................................................................................ 13

9 Operating Mode .......................................................................................................................... 14

9.1 Direct Command Mode ...................................................................................................... 14

9.2 User Set up Mode .............................................................................................................. 14

9.3 Diagnostic Serial OUT Mode ............................................................................................. 14

9.4 Test mode .......................................................................................................................... 14

10 Font Table Configuration ....................................................................................................... 15

11 Character Fonts specification ............................................................................................... 16

11.1 Common Font Set (20h − 7Fh) .......................................................................................... 16

11.2 Alternative 5×7 Matrix font ................................................................................................. 16

11.3 Alternative Magnified font (20h − 7Fh) .............................................................................. 17

11.4 International Font Set ........................................................................................................ 18

CU20027-YX1A

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11.5 Character Table Type (80h − FFh) .................................................................................... 19

12 Display Area End-of-Line Behavior ....................................................................................... 22

13 Initial settings .......................................................................................................................... 23

14 Commands............................................................................................................................... 23

14.1 Command Configuration .................................................................................................... 23

14.2 Command Set .................................................................................................................... 24

14.3 Detail of Command Set ..................................................................................................... 25

14.3.1 Character display ........................................................................................................... 25

14.3.2 Standard Ascii control codes ........................................................................................ 26

14.3.2.1 Back Space ............................................................................................................. 26

14.3.2.2 Horizontal Tab ......................................................................................................... 26

14.3.2.3 Line Feed ................................................................................................................ 27

14.3.2.4 Home Position ........................................................................................................ 27

14.3.2.5 Display Clear........................................................................................................... 27

14.3.2.6 Carriage Return ...................................................................................................... 27

14.3.3 Insert/Delete commands ................................................................................................ 27

14.3.3.1 Character Insert ...................................................................................................... 27

14.3.3.2 Character Delete ..................................................................................................... 27

14.3.3.3 Line Insert ............................................................................................................... 28

14.3.3.4 Line Delete .............................................................................................................. 28

14.3.4 Cursor commands .......................................................................................................... 28

14.3.4.1 Cursor set ............................................................................................................... 28

14.3.4.2 Cursor Underline ..................................................................................................... 28

14.3.4.3 Cursor Underline Blink ............................................................................................ 28

14.3.4.4 Cursor Block ........................................................................................................... 28

14.3.4.5 Cursor Off ............................................................................................................... 29

14.3.5 Character format commands ........................................................................................ 29

14.3.5.1 Underline ON .......................................................................................................... 29

14.3.5.2 Underline OFF ........................................................................................................ 29

14.3.5.3 Blink ON .................................................................................................................. 29

14.3.5.4 Blink OFF ................................................................................................................ 29

14.3.5.5 Brightness (character) ............................................................................................ 29

14.3.5.6 International Font set .............................................................................................. 30

14.3.5.7 Character Table type ............................................................................................... 30

14.3.5.8 5×8 Matrix font ........................................................................................................ 31

14.3.5.9 Font Magnification .................................................................................................. 31

14.3.5.10 Alternative Magnified Font ..................................................................................... 31

14.3.6 Custom font commands ................................................................................................ 32

14.3.6.1 RAM user font ......................................................................................................... 32

14.3.6.2 RAM user font Define ............................................................................................. 32

14.3.6.3 RAM user font Delete ............................................................................................. 33

CU20027-YX1A

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14.3.7 Screen Action Commands ............................................................................................. 33

14.3.7.1 Brightness (screen) ................................................................................................. 33

14.3.7.2 Blink (screen) .......................................................................................................... 33

14.3.7.3 Blink speed ............................................................................................................. 34

14.3.7.4 Wait ......................................................................................................................... 34

14.3.7.5 Screen saver ........................................................................................................... 34

14.3.8 Display Mode Commands .............................................................................................. 35

14.3.8.1 Over-write mode ..................................................................................................... 35

14.3.8.2 Vertical scroll mode ................................................................................................. 35

14.3.8.3 Horizontal scroll mode ............................................................................................ 35

14.3.8.4 Horizontal scroll speed ........................................................................................... 35

14.3.8.5 Write Mode - Quick ................................................................................................. 35

14.3.8.6 Write Mode - Flickerless ......................................................................................... 35

14.3.8.7 Initialize Display ...................................................................................................... 36

14.3.8.8 Reset ....................................................................................................................... 36

14.3.9 User setup mode Commands ........................................................................................ 36

14.3.9.1 User set up mode start ........................................................................................... 36

14.3.9.2 FROM user font Define ........................................................................................... 36

14.3.9.3 Status information Display ...................................................................................... 37

14.3.9.4 User set up mode end ............................................................................................ 37

14.3.10 Diagnostic Serial OUT mode commands ..................................................................... 38

14.3.10.1 Diagnostic Serial OUT mode start ......................................................................... 38

14.3.10.2 Diagnostic Status information Read ....................................................................... 38

14.3.10.3 Diagnostic Serial OUT mode end .......................................................................... 38

15 Connectors .............................................................................................................................. 39

15.1 Parallel interface connector (Fourteen through-holes / CN1) ........................................... 39

15.2 Serial interface connector (Six through-holes / CN3) ........................................................ 39

15.2.1 If Asynchronous serial interface is selected. .............................................................. 39

15.2.2 If Synchronous serial interface is selected. ................................................................ 39

16 Firmware Version Notation .................................................................................................... 39

17 Physical Dimensions .............................................................................................................. 40

Notice for the Cautious Handling of VFD Modules ........................................................................ 41

Revision history ................................................................................................................................. 42

CU20027-YX1A

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1 General Description

1.1 Scope

This specification covers the operation and operating requirements of the Vacuum Fluorescent

Display (VFD) module CU20027-YX1A.

This specification is applicable for firmware version F095 or later.

1.2 Features

 Functions

o Character highlight

o Easy-to-use ASCII commands and fonts

o Character magnification

o Screen saver

o Blink display (character or screen)

 Display

o Vivid green indication

o Wide viewing angle

o High brightness (Typ. 3500 cd/m2 – up to 3.5 times higher than previous displays)

o Brightness levels: 16 levels of overall display brightness with 8 relative levels for each

individual 5×8 matrix

 Font

o New 5×8 matrix character font

o Many international font sets

o RAM user-definable characters (16 characters)

o FROM user-definable characters (224 characters)

o 40 (20×2) characters on the compact display area

 Interface

o CMOS signal level

o Parallel Interface: i80 type 8-bit bus

o Serial interface: Synchronous or Asynchronous, selected by jumper setting

 Operation

o DC 5V input

o Wide operating temperature range (-40 to +85 ºC)

CU20027-YX1A

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1.3 Hardware Configuration

The module consists of:

20×2 character display (VFD)

Refresh RAM

Character generator

DC/DC converter (supplies all necessary power for VFD)

Display controller

All necessary control logic circuits

1.3.1 Block Diagram

2 Electrical Specifications

2.1 Absolute Maximum Ratings

Parameter

Symbol

Min.

Typ.

Max.

Unit

Power Supply Voltage

VCC

-0.3

+6.0

VDC

Logic Input Voltage

D0-D7, /WR, 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

Parallel

interface

circuit

Controller

Firmware

Character font

VFD

Parallel

interface

Serial

interface

DC/DC

Converter

Jumper

EF1

VDD2

EF2

VCC

GND

Serial

interface

circuit

Flash-Memory

(User font table)

Note: Flash memory re-write rating

is approximately 10,000 times.

CU20027-YX1A

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2.3 Electrical Characteristics

Measuring Conditions: Ambient temperature = 25 ºC, VCC = 5.0 VDC

Parameter

Symbol

Min.

Typ.

Max.

Unit

Condition

Note

„L‟ Level

Logic Input Current

D0-D7, /WR,

/RESET

IIL1

-0.15

VIN = 0V

SIN, SCK

IIL2

-0.55

VIN = 0V

„H‟ Level

Logic Input Current

D0-D7,SIN,SCK

IIH1

5.0

μA

VIN = 5V

/WR, /RESET

IIH2

0.25

μA

VIN = 5V

„L‟ Level

Logic Input Voltage

D0-D7, /WR,

SIN, SCK

VIL1

0.2×VCC

VDC

/RESET

VIL2

0.8

VDC

„H‟ Level

Logic Input Voltage

D0-D7, /WR,

/RESET,

SIN, SCK

VIH

0.8×VCC

VCC

VDC

„L‟ Level

Logic Output Voltage

PBUSY

VOL1

0.1

VDC

IOL = 50μA

SBUSY

VOL2

0.45

VDC

IOL = 200μA

„H‟ Level

Logic Output Voltage

PBUSY

VOH1

VCC-0.1

VDC

IOH = -50μA

SBUSY

VOH2

VCC-0.5

VCC

VDC

IOH = -200μA

Power Supply Current

ICC1-1

230

300

mADC

Brightness

100%

(1)

ICC2-1

200

250

mADC

Brightness

100%

(2)

ICC1-2

290

380

mADC

Brightness

200%

(1)

ICC2-2

230

300

mADC

Brightness

200%

(2)

ICC1-3

420

540

mADC

Brightness

400%

(1)

ICC2-3

300

390

mADC

Brightness

400%

(2)

ICC3

mADC

Power Save

Mode

(3)

Power Consumption

1.15

1.50

Brightness

100%

(1)

1.45

1.90

Brightness

200%

(1)

2.10

2.70

Brightness

400%

(1)

(1) ICC1 is the current when all dots in the display are on.

(2) ICC2 is the current when all dots in the display are off.

(3) ICC3 is the current in Power Save Mode (refer to 14.3.7.5 Screen saver command, page 34).

Note: A slow start power supply may cause erroneous operation. ICC can be

approximately twice the specified supply current at power on.

3 Environmental Specifications

Operating temperature: -40 to +85 ºC

Storage temperature: -40 to +85 ºC

Operating humidity: 20 to 80 % R.H (non-condensing)

Storage humidity: 20 to 80 % R.H (non-condensing)

Vibration: 10-55-10Hz, all amplitude 1mm, 30 minutes, X-Y-Z (non-operating)

Shock: 392m/s2 (40G) 9ms X-Y-Z, 3 times each direction (non-operating)

CU20027-YX1A

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4 Optical Specifications

Luminance: Minimum: 350 cd/m2

Typically: 875 cd/m2 (100% brightness)

1750 cd/m2 (200% brightness)

3500 cd/m2 (400% brightness)

Color of illumination: Green (Blue Green)

5 Physical Specifications

Number of characters: 40 (20 characters×2 lines)

Matrix format: 5×8 dots

Display area: 73.4×14.97 mm (X×Y)

Character size: 2.72×7.19 mm (X×Y)

Character pitch: 3.72 mm

Line pitch: 7.81 mm

Dot size: 0.44×0.785 mm (X×Y)

Dot pitch: 0.57×0.915 mm (X×Y)

Weight: Approximately 48g

6 Applicable Specifications

Applicable reliability spec.: TT-99-3102

Applicable production spec.: TT-98-3413

7 Interface

CMOS signal level

Parallel Interface: i80 type 8-bit bus

Serial Interface: Synchronous or Asynchronous, selected by jumper setting

The module cannot receive both serial and parallel data at the same time.

Monitoring the busy line is recommended, to prevent data loss, and to minimize the delay

time for processing subsequent commands / data.

PBUSY

Host

System

Y-series

Display

Module

8bit DATA

SBUSY

Host

System

Y-series

Display

Module

SIN

SBUSY

Host

System

Y-series

Display

Module

SIN

SCK

8-bit Parallel Interface

Asynchronous Serial Interface

Synchronous Serial Interface

CU20027-YX1A

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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 data must be written when PBUSY=0.

7.1.2 Flowchart

End

PBUSY = 0?

/WR = 0

YES

Set D0-D7

/WR = 1

Wait (Min. 20μs)

Continue to

send data?

Start to send data

YES

CU20027-YX1A

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7.1.3 Interface Timing

Note: Data must be written when PBUSY=0 to prevent data loss.

PBUSY

D0−D7

/WR

Min.

100ns

Min.

50ns

Min.

0ns

Min.

20000ns

Max.

40ns

CU20027-YX1A

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7.2 Serial Interface

7.2.1 Basic Operation

Default setting: Asynchronous (Baud rate = 38,400bps)

Synchronous or Asynchronous is selected by jumper setting (refer to 8 Jumper Setting, page 13).

The capacity of the receive buffer is 64 bytes. The relationship between SBUSY and the state of

the receive buffer is as follows:

Remaining space in receive buffer

SBUSY 0→1

24 bytes or less

SBUSY 1→0

32 bytes or more

Writing data when SBUSY=1 may cause data loss, so data should be written when SBUSY=0.

7.2.2 Flowchart

Start to send data

Send one byte data

SBUSY = 0?

Wait (Min. 17μs)

Note: Synchronus

mode only

Continue to

send data?

End

YES

CU20027-YX1A

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7.2.3 Asynchronous Serial Interface Timing

7.2.3.1 Data write

Max.

30μs

Min.

0μs

SIN

SBUSY

Protocol:

Note: Monitoring the serial busy line (SBUSY) is recommended, to prevent data loss, and

to minimize the delay time for processing subsequent commands / data. Data should be

written when SBUSY=0.

7.2.3.2 Data read

This is used for “Diagnostic Status information Read” command only.

Min.

20μs

SIN

SOUT

Min.

0μsMin.

0μs

Protocol:

Baud rate

9,600 − 115,200bps

(Selected by jumper)

Default: 38,400bps

Parity

None

Format

Start(1bit) + Data(8bit) + Stop(1bit)

Handshake

None

Note: Output data is transferred immediately from the VFD module, so a receive buffer

may be required on the host system to prevent data loss.

Baud rate

9,600 − 115,200bps

(Selected by jumper)

Default: 38,400bps

Parity

None

Format

Start(1bit) + Data(8bit) + Stop(1bit)

Handshake

SBUSY

CU20027-YX1A

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7.2.4 Synchronous Serial Interface Timing

D1 D2 D3 D4 D5 D6D0 D7

Min.

50ns

Min.

90ns

Min.

100ns

Min.

100ns

Min.

200ns

Max.

30μs

Min.

0μs

D1 D2 D3 D4 D5 D6D0 D7

Min.

17μs

D1 D2 D3 D4 D5 D6D0 D7 D0

SIN

SCK

SBUSY

Note: Monitoring the serial busy line (SBUSY) is recommended, to prevent data loss, and

to minimize the delay time for processing subsequent commands / data. Data should be

written when SBUSY=0.

7.3 Reset Timing

Reset pulse (active low) should be at least 1ms.

The module sets the SBUSY/PBUSY line upon receipt of Reset signal and clears the line when

ready to receive data.

SIN

/RESET

PBUSY

SBUSY

/WR

Min.

0μs

Min.

1ms

Max.

100ms

Min.

0μs

CU20027-YX1A

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8 Jumper Setting

8.1 Jumper location

Components side

Note: Jumper “BT” is for factory use only. Do not use.

8.1.1 Baud Rate Setting (for Asynchronous Serial Interface only)

Baud Rate

38,400bps (default)

OPEN

19,200bps

SHORT

OPEN

9,600bps

OPEN

SHORT

115,200bps

SHORT

8.1.2 Serial Synchronous / Asynchronous Interface Select

Serial Interface

Asynchronous (default)

OPEN

Synchronous

SHORT

8.1.3 Test Mode

Refer to 9.4 Test mode.

Mode

Direct Command

Mode (default)

OPEN

Test Mode

SHORT

CN3

CN1

J2 J1 J0 BT* JT

CU20027-YX1A

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9 Operating Mode

This module has the following operating modes, selected by commands or jumper settings.

9.1 Direct Command Mode

The module accepts data and all commands except 14.3.9.2 FROM user font Define, 14.3.9.3

Status information Display, 14.3.9.4 User set up mode end, 14.3.10.2 Diagnostic Status

information Read, and 14.3.10.3 Diagnostic Serial OUT mode end.

9.2 User Set up Mode

In this mode, the on-board flash memory can be written to.

The module accepts only three commands: 14.3.9.2 FROM user font Define, 14.3.9.3 Status

information Display, and 14.3.9.4 User set up mode end.

9.3 Diagnostic Serial OUT Mode

In this mode, status information can be read via the Asynchronous Serial Interface.

The module accepts only two commands: 14.3.10.2 Diagnostic Status information Read and

14.3.10.3 Diagnostic Serial OUT mode end.

9.4 Test mode

The module does not accept any commands but displays test patterns. For test purpose only.

Power

Direct Command

Mode

User Set up Mode

Diagnostic Serial

OUT Mode

Serial Interface

Asynchronous?

SHORT

Test Mode

Initial

State

OPEN

YES

Reset Code

CU20027-YX1A

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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.

For font pattern details, refer to 11 Character Fonts specification, page 16.

14.3.5.6 International Font set.

1Bh 52h n

14.3.5.7 Character Table type

1Bh 74h n

CU20027-YX1A

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11 Character Fonts specification

11.1 Common Font Set (20h − 7Fh)

This font set is selected after initial turn on, and its character codes are based on ASCII codes.

Most characters are displayed in a 5×7 Matrix font, but the five characters „g‟, „j‟, „p‟, „q‟ and „y‟ are

displayed in a 5×8 Matrix font which gives a more natural appearance, similar to printed text.

Refer to 14.3.5.8 5×8 Matrix font, page 31.

11.2 Alternative 5×7 Matrix font

The five characters „g‟, „j‟, „p‟, „q‟ and „y‟ can also be displayed in Alternative 5×7 Matrix font

instead of Common font.

Refer to 14.3.5.8 5×8 Matrix font, page 31.

67h

6Ah

70h

67h

6Ah

70h

71h

79h

71h

79h

Common Font

Alternative 5×7 Matrix font

CU20027-YX1A

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11.3 Alternative Magnified font (20h − 7Fh)

In 2×2 Font Magnification mode, the following 28 characters, such as „!‟, „1‟, „(„, etc. can optionally

be displayed in an Alternative Magnified font instead of the Common font.

Refer to 14.3.5.10 Alternative Magnified Font, page 31.

Details of Alternative Magnified font pattern

Character code

21h

27h

28h

29h

2Ch

2Dh

Alternative Magnified font Pattern

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Common font Pattern

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Character code

2Eh

31h

33h

34h

39h

3Ah

Alternative Magnified font Pattern

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Common font Pattern

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Character code

3Bh

3Dh

3Fh

47h

49h

4Ah

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Character code

51h

52h

53h

59h

66h

69h

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Character code

6Ch

74h

79h*

7Ch

Alternative Magnified font Pattern

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* Alternative 5×7 Matrix font selected

CU20027-YX1A

- 18 -

11.4 International Font Set

One of the following international font sets is selected using the “International Font set” command

(1Bh 52h n), and its characters replace the corresponding code characters in Common font set.

Refer to 10 Font Table Configuration, page 15.

CU20027-YX1A

- 19 -

11.5 Character Table Type (80h − FFh)

One of the following character table types is selected using the “Character Table type” command

(1Bh 74h n), and the characters are added to Common Font set.

Refer to 14.3.5.7 Character Table type, page 30.

n = 00h

n = 01h

n = 02h

n = 03h

CU20027-YX1A

- 20 -

n = 04h

n = 05h

n = 10h

n = 11h

CU20027-YX1A

- 21 -

n = 12h

n = 13h

CU20027-YX1A

- 22 -

12 Display Area End-of-Line Behavior

In most cases, the cursor moves to the right by one character after a character is displayed at the

current cursor position. However, at end of line, the behavior depends on the current cursor position,

the currently-selected character size, and the display mode. Some examples follow:

Regular size (1×1) characters (Over-write mode)

1×2 Magnified characters (Over-write mode)

2×2 Magnified characters (Over-write mode)

Note: Dead space in the above situation is cleared. It is possible to display a regular-width

character (1×1 or 1×2) in the dead space.

Right-most column

Lower-most row

Next cursor position

Right-most column

Lower-most row

Dead space

Lower-most row

Next 2×2 magnified character

Lower-most row

Current cursor position

Right-most column

Next cursor position

Current cursor position

CU20027-YX1A

- 23 -

13 Initial settings

Initial states are set as follows.

Power on

“Initialize display”

command

External reset or

“Reset”

command

“User set up

mode end”

command

Cursor position

Home position

RAM user font

Disabled

Cursor display

Underline cursor

Display mode

Over-write mode

Write mode

Quick write mode

International font set

America

Character Table type

PC437(USA – Euro std)

Blink

OFF

Underline

OFF

Brightness (character)

Level 8 (100%)

Brightness (screen)

100%

Blink speed

40h

Horizontal scroll speed

Instantaneous (n=00h)

RAM User font data

Cleared

Blink display action

(at c=00h)

–

Stopped

5×8 Matrix font

ON (5×8 Matrix font)

Alternative Magnified Font

OFF (Normal font)

Font Magnification

x=1, y=1

Baud rate (J0, J1)

Re-loaded

Not re-loaded

Re-loaded

Serial interface (J2)

Re-loaded

Not re-loaded

Re-loaded

Test mode (JT)

Re-loaded

Not re-loaded

Re-loaded

14 Commands

This display's commands are arranged as follows.

14.1 Command Configuration

08h−16h

Control command

1Bh ...

ESC command

1Fh ...

User Setup command

− 1Fh 28h 61h ...

− Action command

− 1Fh 28h 65h ...

− Operation mode-related command

− 1Fh 28h 67h ...

− Character-related command

20h−FFh

Character code

CU20027-YX1A

- 24 -

14.2 Command Set

Command Name

Hex Code

BYTE1

BYTE2

BYTE3

BYTE4

Parameter

Back Space

08h

–

Horizontal Tab

09h

–

Line Feed

0Ah

–

Home Position

0Bh

–

Display Clear

0Ch

–

Carriage Return

0Dh

–

Cursor Underline

13h

–

Cursor Off

14h

–

Cursor Block

15h

–

Cursor Underline Blink

16h

–

RAM user font

1Bh

25h

–

RAM user font Define

26h

01h

–

c1 c2

[x1 d1...d(a × x1)]...

[xk d1...d(a × xk)]

RAM user font Delete

3Fh

01h

–

Initialize display

40h

–

Blink OFF

41h

–

Blink ON

42h

–

Write Mode – Quick

45h

–

International font set

52h

–

Write Mode – Flickerless

53h

–

Blink speed

54h

–

Underline ON

55h

–

Underline OFF

57h

–

Character Insert

58h

F3h

–

Character Delete

F4h

–

Line Insert

F5h

–

Line Delete

F6h

–

Reset

FFh

–

Character Table type

74h

–

Over-write mode

1Fh

01h

–

Vertical scroll mode

02h

–

Horizontal scroll mode

03h

–

Cursor set

24h

–

xL 00h yL 00h

Wait

28h

61h

01h

Blink (screen)

11h

p t1 t2 c

Screen saver

40h

User set up mode start

65h

01h

d1 d2

User set up mode end

02h

d1 d2 d3

FROM user font Define

14h

P(20h-1) P(20h-2)...P(FFh-5)

Diagnostic Status information Read

40h

a [b c d e]

Status information Display

41h

Diagnostic Serial OUT mode start

83h

d1 d2

Diagnostic Serial OUT mode end

84h

d1 d2 d3

5×8 Matrix font

67h

04h

Alternative Magnified Font

06h

Font Magnification

40h

x y

Brightness (character)

50h

d1 d2 d3

Brightness (screen)

58h

–

Horizontal scroll speed

73h

–

Character display

20−FFh

–

CU20027-YX1A

- 25 -

14.3 Detail of Command Set

14.3.1 Character display

Code: 20h − FFh

Note: Refer also to “12 Display Area End-of-Line Behavior”, page 22.

Function: Display a character on the current cursor position. The details of operation are as follows:

Over-write mode

Cursor position

Operation

X(column)

Y(row)

Not right-most column

−

Display character at cursor position.

Cursor moves to the right by one character.

Right-most column

Not lower-most row

Display character at cursor position.

Cursor moves to left end of next lower row.

Lower-most row

Display character at cursor position.

Cursor moves to the home position (left end, top row)

Vertical scroll mode

Cursor position

Operation

X(column)

Y(row)

Not right-most column

−

Display character at cursor position.

Cursor moves to the right by one character.

Right-most column

Not lower-most row

Display character at cursor position.

Cursor moves to left-most column, next lower row.

Lower-most row

Display character at cursor position.

Display contents shift up by one line, lower-most row is

cleared.

Cursor moves to left end of lower-most row.

Horizontal scroll mode

Cursor position

Operation

X(column)

Y(row)

Not right-most column

Display character at cursor position.

Cursor moves to the right by one character.

Right-most column

Display character at cursor position.

Transition to Scroll ON mode.

Note: Cursor does not move.

Operation

Scroll ON mode

Current line display contents shift left by one column.

Display character at cursor position.

Note: 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”.

CU20027-YX1A

- 26 -

14.3.2 Standard Ascii control codes

14.3.2.1 Back Space

Code: 08h

Note: Refer also to “12 Display Area End-of-Line Behavior”, page 22.

Function: The cursor moves to the left by one character. The details of operation are as follows:

Over-write mode or Vertical scroll mode

Cursor position

Operation

X(column)

Y(row)

Not left-most column

Cursor moves to the left by one character.

Left-most column

Not upper-most row

Cursor moves to right-most column of next upper row.

Upper-most row

No operation

Horizontal scroll mode

Cursor position

Operation

X(column)

Y(row)

Not left-most column

Cursor moves to the left by one character.

Left-most column

No operation

14.3.2.2 Horizontal Tab

Code: 09h

Note: Refer also to “12 Display Area End-of-Line Behavior”, page 22.

Function: The cursor moves to the right by one character. The details of operation are as follows:

Over-write mode

Cursor position

Operation

X(column)

Y(row)

Not right-most column

Cursor moves to the right by one character.

Right-most column

Not lower-most row

Cursor moves to left end of next lower row.

Lower-most row

Cursor moves to the home position (left end, top row).

Vertical scroll mode

Cursor position

Operation

X(column)

Y(row)

Not right-most column

Cursor moves to the right by one character.

Right-most column

Not lower-most row

Cursor moves to left end of next lower row.

Lower-most row

Display contents shift up by one line, lower-most row

is cleared.

Cursor moves to left end of lower-most row.

Horizontal scroll mode

Cursor position

Operation

X(column)

Y(row)

Not right-most column

Cursor moves to the right by one character.

Right-most column

Current line display contents shift left by one character

and display is cleared at cursor position.

Transition to (or remain in) Scroll ON mode.

Note: 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”.

CU20027-YX1A

- 27 -

14.3.2.3 Line Feed

Code: 0Ah

Note: Refer also to “12 Display Area End-of-Line Behavior”, page 22.

Function: The cursor moves to next lower line. The details of operation are as follows:

Over-write mode

Cursor position

Operation

X(column)

Y(row)

Not lower-most row

Cursor moves to next lower row (same column).

Lower-most row

Cursor moves to the home position (left end, top row).

Vertical scroll mode

Cursor position

Operation

X(column)

Y(row)

Not lower-most row

Cursor moves to next lower row (same column).

Lower-most row

Display contents shift up by one line, lower-most row

is cleared.

Note: Cursor does not move.

Horizontal scroll mode

Cursor position

Operation

X(column)

Y(row)

No operation

14.3.2.4 Home Position

Code: 0Bh

Function: Cursor moves to the home position (left end of top line).

14.3.2.5 Display Clear

Code: 0Ch

Function: Display is cleared and cursor moves to home position.

14.3.2.6 Carriage Return

Code: 0Dh

Function: Cursor moves to left end of same line.

14.3.3 Insert/Delete commands

14.3.3.1 Character Insert

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.

14.3.3.2 Character Delete

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.

CU20027-YX1A

- 28 -

14.3.3.3 Line Insert

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.

14.3.3.4 Line Delete

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.

14.3.4 Cursor commands

14.3.4.1 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.

00h

01h

- - -

12h

13h

00h

□□ □□□

- - -

□□ □□□

01h

□□ □□□

14.3.4.2 Cursor Underline

Code: 13h

Function: Cursor is displayed as underline.

14.3.4.3 Cursor Underline Blink

Code: 16h

Function: Cursor is displayed as underline, blinking.

Blinking speed can be varied by 14.3.7.3 Blink speed.

14.3.4.4 Cursor Block

Code: 15h

Function: Cursor is displayed as a block, blinking.

Blinking speed can be varied by 14.3.7.3 Blink speed.

CU20027-YX1A

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14.3.4.5 Cursor Off

Code: 14h

Function: Cursor display is OFF.

14.3.5 Character format commands

14.3.5.1 Underline 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 the appearance of characters. Refer to the following examples.

5×8 font without underline

5×8 font with underline

5×7 font with underline

14.3.5.2 Underline 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.

14.3.5.3 Blink 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 14.3.7.3 Blink speed.

14.3.5.4 Blink 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.

14.3.5.5 Brightness (character)

Code: 1Fh 28h 67h 50h d1 d2 d3

d1: Gray-shade level

d2: Reserved

d3: Reserved

Definable area: 1 (01h) ≤ d1 ≤ 8 (08h), 49 (31h) ≤ d1 ≤ 54 (38h)

CU20027-YX1A

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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 setting is effective for characters written after this command is executed.

Characters already displayed are not affected.

Note: The character brightness is relative to the screen brightness. If the screen brightness

level and the character brightness level are 200% and Level 5 (57%) respectively, the

actual brightness of the character is 200% × 57% = 114%. To set the screen brightness,

refer to 14.3.7.1 Brightness (screen), page 33.

Level 1

(0%)

Level 2

(14%)

Level 3

(29%)

Level 4

(43%)

Level 5

(57%)

Level 6

(71%)

Level 7

(86%)

Level 8

(100%)

14.3.5.6 International Font set

Code: 1Bh 52h n

Definable area: 0 (00h) ≤ n ≤ 13 (0Dh)

Default: n = 0 (00h)

Function: Select international font set.

Characters already displayed are not affected.

Note: Refer to 10 Font Table Configuration, page 15.

14.3.5.7 Character Table 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 (00h)

Function: Selects font code

Characters already displayed are not affected.

Note: Refer to 10 Font Table Configuration, page 15.

Font set

00h

America

01h

France

02h

Germany

03h

England

04h

Denmark 1

05h

Sweden

06h

Italy

07h

Spain1

08h

Japan

09h

Norway

0Ah

Denmark2

0Bh

Spain2

0Ch

Latin America

0Dh

Korea

Font code type

00h

PC437(USA – Euro std)

01h

Katakana – Japanese

02h

PC850 (Multilingual)

03h

PC860 (Portuguese)

04h

PC863 (Canadian-French)

05h

PC865 (Nordic)

10h

WPC1252

11h

PC866 (Cyrillic #2)

12h

PC852 (Latin 2)

13h

PC858

FFh

FROM User font table

CU20027-YX1A

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14.3.5.8 5×8 Matrix font

Code: 1Fh 28h 67h 04h d

d: Select / Deselect 5×8 Matrix font

Definable area: 128 (80h) ≤ d ≤ 129 (81h)

d = 80h: Deselect 5×8 Matrix font

d = 81h: Select 5×8 Matrix font

Default: d = 81h (Select 5×8 Matrix font)

Function: Select / Deselect 5×8 Matrix font

Selecting 5×8 Matrix font gives decender to only these five characters: „g‟ (67h),

„j‟ (6Ah), „p‟ (70h), „q‟ (71h) and „y‟ (79h).

Both 5×8 font and 5×7 font give the same style fonts to the other characters.

d=81h: The five characters are displayed in 5×8 font after this command.

Characters already displayed are not affected.

For details of each pattern, refer to 11 Character Fonts specification, page 16.

5×8 Font

5×7 Font

14.3.5.9 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 setting is effective for characters written after this command is executed.

Characters already displayed are not affected.

x=2, y=1 is not supported (command will be ignored).

1×1 magnification

(default)

1×2 magnification

2×2 magnification

14.3.5.10 Alternative Magnified Font

Code: 1Fh 28h 67h 06h s

s: Select/Deselect Alternative Magnified Font

Definable area: 0 (00h) ≤ s ≤ 1 (01h)

s = 00h: Normal font

s = 01h: Alternative Magnified font

Default: s = 0 (00h)

Function: Select Alternative Magnified font to improve legibility for Font magnified display.

5 Char 10 Char 15 Char 20 Char

CU20027-YX1A

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This setting is effective for characters written after this command is executed.

Characters already displayed are not affected.

Alternative Magnified font is only used when magnification is x=2×, y=2×. 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 (“Character Table type” command) is selected, user font

characters have priority, regardless of this setting.

Note: For details of each pattern, refer to 11 Character Fonts specification, page 16.

In case of character „1‟

□□□□■

□□■■■

□□□□■

■□□□□

□□□□■

□□■■■

□□□□□

■□□□□

■■■□□

□□□□□

□□□■■

□■■■■

□□□■■

□□□□□

□□□■■

□□□□□

Normal font Alternative Magnified font

14.3.6 Custom font commands

This section describes the RAM user font. For FROM user font, refer to 14.3.9.2 FROM user font

Define, page 36.

14.3.6.1 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.

When RAM user font is enabled (n=01h, 31h), RAM user font is used for character codes defined

using “RAM user font Define” command, regardless of the state of various other settings.

14.3.6.2 RAM user font Define

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

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 “RAM user font Define” and “RAM user font”

(enable) 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.

CU20027-YX1A

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RAM User font data format 5×8 dot assignment

P10

P11

P12

P13

P14

P15

P16

P17

P18

P19

P20

P21

P22

P23

P24

P25

P26

P27

P28

P29

P30

P31

P32

P33

P34

P35

P36

P37

P38

P39

P40

B7(MSB)

B0(LSB)

1st byte

2nd byte

P16

P15

P14

P13

P12

P11

P10

3rd byte

P24

P23

P22

P21

P20

P19

P18

P17

4th byte

P32

P31

P30

P29

P28

P27

P26

P25

5th byte

P40

P39

P38

P37

P36

P35

P34

P33

14.3.6.3 RAM user font Delete

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 “International Font set” and

“Character Table type” commands).

This command is ignored if RAM user font is not defined for the character code.

14.3.7 Screen Action Commands

14.3.7.1 Brightness (screen)

Code: 1Fh 58h n

n: Brightness level setting

Definable area: 1 (01h) ≤ n ≤ 16 (10h), 49 (31h) ≤ n ≤ 64 (40h)

Default: n = 4 (04h)

Function: Specify display brightness level.

14.3.7.2 Blink (screen)

Code: 1Fh 28h 61h 11h p t1 t2 c

p: Blink pattern

t1: Normal display time

t2: Blank display time

c: Number of cycles

Definable area: 0 ≤ p ≤ 1

Brightness level

01h or 31h

25 %

02h or 32h

50 %

03h or 33h

75 %

04h or 34h

100 %

05h or 35h

125 %

06h or 36h

150 %

07h or 37h

175 %

08h or 38h

200 %

09h or 39h

225 %

0Ah or 3Ah

250 %

0Bh or 3Bh

275 %

0Ch or 3Ch

300 %

0Dh or 3Dh

325 %

0Eh or 3Eh

350 %

0Fh or 3Fh

375 %

10h or 40h

400 %

CU20027-YX1A

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p=0: Display is not affected

p=1: Alternating 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 count by c.

A: t1×13.5 ms (Typ.) Normal display time

B: t2×13.5 ms (Typ.) Blank display time

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 completed, normal display and

command/data execution is resumed.

During display blinking, Block cursor, Underline blink cursor, and Character blink stops.

After blink action, blinking speed for Block cursor, Underline blink cursor, and Character

blink change to t1 and t2 as set in this command.

14.3.7.3 Blink speed

Code: 1Bh 54h s

s: Blinking speed

Definable area: 0 (00h) ≤ s ≤ 255 (FFh)

00h, FFh: 128×13.5ms (Typ.)

FEh, FDh: 127×13.5ms (Typ.)

02h, 01h: 1×13.5ms (Typ.)

Default: s = 64 (40h) (32×13.5ms)

Function: Specifies blinking speed for Block cursor, Underline blink cursor, and character blink.

14.3.7.4 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×0.5s approx.

14.3.7.5 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. Setting is effective until this command

is re-specified, external reset, “Reset” command, or “User set up mode end” command.

p=02h, 03h, 32h, 33h: Start screen saver mode. When next command or data is

received, 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.

CU20027-YX1A

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14.3.8 Display Mode Commands

14.3.8.1 Over-write mode

Code: 1Fh 01h

Function: Display mode set to Over-write mode.

14.3.8.2 Vertical scroll mode

Code: 1Fh 02h

Function: Display mode set to Vertical scroll mode.

14.3.8.3 Horizontal scroll mode

Code: 1Fh 03h

Function: Display mode set to Horizontal scroll mode.

14.3.8.4 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.

14.3.8.5 Write Mode - Quick

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 14.3.8.6 Write Mode - Flickerless shows the difference between

Flickerless Mode and Quick Write Mode.

14.3.8.6 Write Mode - Flickerless

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.

Scroll speed (time per character)

00h

Instantaneous

01h – 1Fh

n×13.5ms (Typ.)

CU20027-YX1A

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14.3.8.7 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.

14.3.8.8 Reset

Code: 1Bh 58h FFh

Function: Transition to state immediately after power-on.

Jumper settings are re-loaded – baud rate (for asynchronous serial), serial interface

(synchronous / asynchronous) and test mode settings. Receive buffer is also cleared.

14.3.9 User setup mode Commands

14.3.9.1 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.

14.3.9.2 FROM user font Define

Code: 1Fh 28h 65h 14h P(20h-1) P(20h-2)...P(FFh-5)

P: Definition data

Definable area: 0 (00h) ≤ P ≤ 255 (FFh)

(20h-1)...P(20h-5)......P(FFh-5) 5 Bytes / font ×224 characters (1120 bytes)

Function: Define the 1 byte user font to the user font table in FROM.

All 224 characters must 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.

Screen

Refreshing

Command/data

processing

Command/

Data 2

Command/Data 1

Flickerless Mode

Screen

Refreshing

Command/data

processing

Quick Write Mode

Command/

Data 2

Command/Data 1

Command/

Data 2

Command/Data 1

CU20027-YX1A

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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, “Character Table type” command (n=FFh) must

be executed.

To define and display FROM user font characters:

(1) “User set up mode start” command Code: 1Fh 28h 65h 01h 49h 4Eh

(2) “FROM user font Define” command Code: 1Fh 28h 65h 14h P(20h-1) P(20h-2)...P(FFh-5)

(3) “User set up mode end” command Code: 1Fh 28h 65h 02h 4Fh 55h 54h

(4) “Character Table type” command Code: 1Bh 74h FFh

FROM User font data format 5×8 dot assignment

P10

P11

P12

P13

P14

P15

P16

P17

P18

P19

P20

P21

P22

P23

P24

P25

P26

P27

P28

P29

P30

P31

P32

P33

P34

P35

P36

P37

P38

P39

P40

B7(MSB)

B0(LSB)

P(XXh-1)

P(XXh-2)

P16

P15

P14

P13

P12

P11

P10

P(XXh-3)

P24

P23

P22

P21

P20

P19

P18

P17

P(XXh-4)

P32

P31

P30

P29

P28

P27

P26

P25

P(XXh-5)

P40

P39

P38

P37

P36

P35

P34

P33

14.3.9.3 Status information Display

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.

14.3.9.4 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), serial interface

(synchronous / asynchronous) and test mode settings.

CU20027-YX1A

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14.3.10 Diagnostic Serial OUT mode commands

Diagnostic Serial OUT mode can be used, if necessary, to read internal status information via the

asynchronous serial interface. In this mode, the SBUSY pin functions as SOUT (transmission of

response data). There is no flow control (handshaking) in this mode.

In order to avoid complications due to SBUSY changing function during operation, this mode is

best used, if necessary, immediately after power-on.

14.3.10.1 Diagnostic 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 “Diagnostic Serial OUT mode”.

This command is only valid when Asynchronous serial interface is selected and

mode is Direct Command mode.

Display screen is not changed and normal commands stop being accepted.

During Diagnostic Serial OUT mode, do not use SBUSY for communication flow control

(SBUSY functions as SOUT in this mode).

14.3.10.2 Diagnostic Status information Read

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×100h ) ≤ FFFFh: Start address

0000h ≤ ( d + e×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 the Asynchronous serial interface

This command is only valid in Diagnostic Serial OUT mode.

14.3.10.3 Diagnostic 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 Diagnostic Serial OUT mode.

After “Diagnostic Serial OUT mode end” command is executed, SBUSY=0 (READY)

until receipt of next data.

Response data

Hex

Data length

1: Header

28h

1 byte

2: Identifier 1

65h

1 byte

3: Identifier 2

40h

1 byte

4: Data

00h - FFh

a = 02h: 4 bytes

a = 20h: 4 bytes

a = 30h: 11 bytes

a = 80h: 5 bytes

CU20027-YX1A

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15 Connectors

CN1 and CN3 are positioned as follows:

CN3

CN1

Components side

15.1 Parallel interface connector (Fourteen through-holes / CN1)

15.2 Serial interface connector (Six through-holes / CN3)

15.2.1 If Asynchronous serial interface is selected.

Pin No.

Signal name

Function

Direction

VCC

Power supply

SIN

Data receive

Input

GND

Ground

SBUSY

Display busy

Output

No connection

/RESET

Reset

Input

15.2.2 If Synchronous serial interface is selected.

Pin No.

Signal name

Function

Direction

VCC

Power supply

SIN

Data receive

Input

GND

Ground

SBUSY

Display busy

Output

SCK

Display clock

Input

/RESET

Reset

Input

16 Firmware Version Notation

The firmware version is shown in the following position.

No.

Signal

name

Function

Direction

No.

Signal

name

Function

Direction

GND

Ground

Data input

Input

VCC

Power supply

Data input

Input

PBUSY

Display busy

Output

Data input

Input

/RESET

Reset

Input

Data input

Input

/WR

Data write

Input

Data input

Input

Not connected

Data input

Input

Data input (LSB)

Input

Data input (MSB)

Input

CU20027-YX1A xxxxx Fnnn

Part Number Date Code Firmware Version

CN3

CN1

VFD

CU20027-YX1A

- 40 -

17 Physical Dimensions

CU20027-YX1A

- 41 -

Notice for the Cautious Handling of VFD Modules

Handling and Usage Precautions:

Please carefully follow the appropriate product application notes and operation standards for proper usage, safe handling, and

maximum performance.

[VFD tubes are made of glass]

 The edges of the VFD glass envelope are not smooth, so it is necessary to handle carefully to avoid injuries to hands.

 Use caution to avoid breaking the VFD glass envelope, 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 operation, because unrecoverable damage may

result.

 Sending input signals to the VFD module when not powered can cause I/O port damage.

 It is recommended to use a 30cm or shorter signal cable to prevent functional failures.

[Electrostatic charge]

 VFD modules need 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.

 Preferably, use UL-grade materials or components in conjunction with VFD modules.

 Warp and twist movement causes stress and may break VFDs and 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.

 VFD modules may draw in-rush current exceeding twice the typical current at power-on, so a power supply with

sufficient capacity and quick starting of the power regulator is recommended.

 VFD module needs a specified voltage at the point of connection. Please use an adequate power cable to avoid a

decrease in voltage. As a safety measure, a fuse or other over-current protection is recommended.

[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 non-uniform brightness. 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 of the pixels.

 A signal cable 30cm or less is recommended to avoid possible disturbances to the signal.

[Storage and operating environment]

 Please use VFD modules under the recommended specified environmental conditions. Salty, sulfuric and dusty

environments may damage the VFD module even during storage.

[Disposal]

 VFD uses lead-containing materials (RoHS directive exempts these lead compounds in the glass for electronic

devices). When discarding VFDs or VFD modules, please adhere to applicable laws and regulations.

[Other cautions]

 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 is 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 accept responsibility for

problems that may occur.

CU20027-YX1A

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Revision history

Spec. number

Date

Revision

DS-1577-0001-00

Mar.16, 2010

Initial issue