NORITAKE-ITRON GU128x8T-K612C5 technology data

Dot Graphic VFD Module GU128x8T-K612C5

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q 128 x 8 High Brightness Dot Graphic Displa
q Single 12V DC Supply
q Large 5x7 ASCII & European Font
q RS232 Asynchronous Serial Interface
q 31 Selectable Multi Drop Addresses
q Transformerless PSU (patent pending)
q Low Profile Construction

The module includes the VFD glass, VF drivers and microcontrolle
with refresh RAM, character generation, interface logic and
patented transformerless DC/DC converter. The RS232 serial
interface accepts 9600 or 19200 baud rates with optional parity bit.
The module features a low profile design with numerous custom
options available including special fonts and commands. Modules
can be connected to a multi dro

39.0

3.5

28.025

363.0

306.95

370.0

PL4 Pin 1

Body height 3.9mm max + Plunger height 1.1mm

ELECTRICAL SPECIFICATION

Parameter Symbol Value Condition

Supply Voltage VDD 12.0VDC +/- 10% GND=0V
Supply Current IDD 500 mA typ. VDD=12V
RS232 Input VsIL / VsIH -24V max / +24V max VDD=12V
RS232 Output VsOL/VsOH -5VDC min / +5VDC min VDD=12V

OPTICAL & ENVIRONMENTAL SPECIFICATION
Parameter Value

Display Area (X xYmm) 306.95 x 25.35
Dot Size/Pitch (XxY mm) 2.15 x 2.95 / 2.4 x 3.2
Luminance 1000 cd/m² Typ.
Colour of Illumination Blue-Green (505nm)
Operating Temperature
Storage Temperature
Operating Humidity

-40°C to +85°C

-40°C to +85°C
20 to 85% RH @ 25°C

Optical filters can provide violet, red, yellow, blue & green output.

SOFTWARE COMMANDS

Hex Command

10 Software Reset to power on state
11 Write Mode toggles overwrite / scroll
12 Write Direction toggles increment / decrement
13 Display On/Off. Data is retained
14 Display Invert. Toggle negative image
15 + xx Absolute Column Set from 00H – FFH
16 + xx Relative Column Set by 00H - FFH
17 + len + data Graphic Data Write 1 bytes per column, D7 top
18 Clear Character Buffer with 21 ASCII spaces
19 + data Write to Character Buffer for display effect
1A + effect Fade, wipe, scroll, dissolve & character delay.
1C + macro + len + data Store Macro E0H – FFH in EEPROM
1D + delay Delay – pause for up to 3 seconds
1E + 1E + 1E + FE Clear Macros from EEPROM
1E + 1E + 1E + FF Stop Display and clear receive buffer
1E + 1E + 1E + adr Address Select 00H – 1FH for active module
1F Loop receive buffer
20 - DF Character Write ASCII font.
E0 - FF Run Macro – execute user defined macro
60 + dh + dl Send Hexadecimal code instead of binary

The user can send non printable command codes 10H-1FH as hexadecimal by
prefixing the code using character 60H. Example: `15`3F = Position column 64.
When 1FH is sent, the commands/data in the communication buffer (max 192 bytes)
are executed until ‘Stop Display’ is issued. Example: 10H --- data --- 1FH.
Macro E0 is run at power on unless cleared.
Software and font set are copyright Noritake Itron Corporation 2002

address system.

28.5 46.025.35

6.825

3.5

1.6 10.7

Dimensions in mm & subject to tolerances. Mounting holes 3.5mm dia.

CHAR ACTER SET - 5X7 Font

Character 60H is used as a hexadecimal prefix, but can be displayed with a
repeat send. Column position X = 00H – 7FH.
Data is shown in hexadecimal and sent in binary. e.g. FFH = 11111111 Bin

ddress ‘adr’ = 00H - 1FH. Setting ‘adr’ to 00H activates all modules.
The communication settings and address can be set using the three switches on
the rear of the module. Default communication is Addr 00 - 9600,n,8,1 STD.
Choose between ‘STD’ (standard) and ‘WEB’ modes. In ‘WEB’ mode 20H and
all codes below 10H are ignored. To send a SPACE, 5FH can be used. All codes
are accepted when sent using hexadecimal. Select ‘WEB’ mode when using the
display with the Noritake Message Creator software.

PL4

Pin Signal Description

1 VDD 12V Supply
2 RXD RS232 received data
3 GND 0V supply
4 TXD RS232 transmitted data
5 DTR Module Busy if -5V
6 CTS Host Busy if -5V

Handshaking lines DTR/CTS should be linked if not used. Received data is
retransmitted from the module TXD output.

Detailed specification, software
commands and interface timing

are available on request.

Subject to change without notice.

IUK Doc. No. 03897 Iss.6

31 Mar 03

CONTACT

Noritake Sales Office Tel Nos

Nagoya Japan: [phone]

Canada: [phone]

Chicago USA: [phone]

Munchen (D): [phone]

Itron UK: [phone]

Rest Europe: [phone]

www.noritake -itron.com

NORITAKE ITRON VFD MODULES GU128x8T-K612C5

Dot Graphic VFD Module GU128x8T-K612C5

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SOFTWARE COMMANDS AND CHARACTER CONTROL CODES

Instruction Hex Description

Software Reset

BUSY time = 500uS

Write Mode

BUSY time = 300uS

Write Direction

BUSY time = 300uS

Display On/Off

BUSY time = 300uS

Display Invert

BUSY time = 300uS

Absolute Column Set

BUSY time = 300uS

Relative Column Set

BUSY time = 300uS

Graphic Data Write

BUSY time = 300uS

Character Buffer Clear

BUSY time = 300uS

Character Buffer Write

BUSY time = 300uS

Display Effect

For BUSY times see individual effect
descriptions

Macro Store

BUSY times: ­macro number = 10ms
data byte = 5ms
last data byte = 20ms

Delay

BUSY time = 300uS

Macro Clear

BUSY time = 200ms

Stop Display

BUSY time = 300uS

Address Select

BUSY time = 300uS

Loop Receive Buffer

BUSY time = 300uS

Character Write

BUSY time = 300uS

Macro Run

BUSY time = 300uS

Send Hex Byte

BUSY times :-

st

and 2nd bytes = 300uS

1

rd

byte = respective command / data busy

3

Notes: When storing Macros definitions, the display may flicker. When erasing Macros, the display will momentarily go blank.

To send 60H in binar

10H Resets the VFD module. The display’s contents are cleared and the column position is set to

00H. The write mode is set to normal, the write direction is set to increment, the display is
turned on, and the display invert is turned off.

11H Toggles the write mode from normal write [default] to scroll write, and from scroll write to

normal write.

12H Toggles the writing direction from increment (left-to-right) to decrement (right-to-left), and from

decrement to increment. The default direction is increment.

13H Toggles the display from On [default] to Off, and from Off to On.

14H Inverts all data on the display.

15H + xx Sets the column position from 00H [default] to FFH. All written data is ignored if the column

position is set to 80H-FFH.

16H + xx Moves the current column position by xx amount. The column can be advanced by up to 127

pixels. The column positioning is constrained to a 128 pixel window, this allows the cursor to be
moved backwards as well as forward, e.g. 16H + 7EH - moves the column position back by
two.

17H + len + data Writes graphical data to the display from the current column position. If the write mode is set to

scroll, the whole display is shifted one column to the left or right (dependant upon the current
write direction). The graphical data length must be sent prior to the actual data. All graphical
data should be in a vertical orientation, with bit 7 uppermost.

18H Clears the internal 21-character buffer. This buffer is used in conjunction with the ‘Display

Effect’ commands.

19H + data Write 21-characters to the internal buffer.

1AH + effect Produce a display effect: -

00H – Fade display from ‘Off’ to maximum brightness.
01H – Fade display from maximum brightness to ‘Off’.
02H – Wipe display with the character buffer from left-to-right.
03H – Wipe display with the character buffer from right-to-left.
04H – Wipe display with the character buffer edge-to-center.
05H – Wipe display with the character buffer center-to-edge.
06H – Scroll display with the character buffer.
07H – Dissolve the display with the character buffer.
10H – 17H Set character delay (10H = No delay [default], 17H = Maximum delay)

1CH+macro+len+data Store a macro from E0H - FFH into non-volatile EEPROM. The first Macro (E0H), is always

executed at power up. The Macro data length must be sent prior to the data itself. Up to 256
command/data bytes can be assigned to each macro, and 1900 bytes are available for all
Macro definitions. All commands can be used in the Macros with the exception of ‘Address
Select’, ‘Macro Store’, ‘Macro Clear’ and ‘Macro Stop’. Please note that no provision is made
for protecting previously defined Macros.

1DH + delay Halts current processing for up to 3 seconds. Delay can be any value (00H - FFH)

55H = 1 second, AAH = 2 seconds, FFH = 3 seconds. (A value of 00H has no effect.)

1EH+1EH+1EH+FEH Clears all previously defined Macros.

1EH+1EH+1EH+FFH This command stops any running Macro. All display commands will be ignored if any Macro is

running. This command also stops ‘Loop Receive Buffer’ mode and clears the receive buffer.

1EH+1EH+1EH + adr Activate a display with address ‘adr’. All displays have can have a defined address of 00H-1FH.

If the display module’s address is not the same, all data will be ignored with the exception of
any new ‘Address Select’ commands. To activate all modules, set ‘adr’ to 00H.

1FH Activates a mode in which all commands/data present in the receive buffer up to the 1FH byte

itself is executed. When the 1FH is reached, execution begins again from the start of the buffer.
Sending the ‘Stop Display’ command ends this mode. The ‘Stop Display’ command should also
be sent prior to sending any commands/data to be used with this mode to ensure that the
receive buffer is empty.

20H - DFH Writes data direct to the display. The character write position is automatically advanced to the

right or the left, depending upon the selected write direction. If the write mode is set to scroll,
the display will scroll on the character from the left or right end. In ‘WEB’ mode, 20H is ignored
so to display a SPACE character send 5FH or `20.

E0H - FFH Execute the user defined Macro, E0H = Macro 1, FFH = Macro 32.

60H + dhH + dlH Write to the display module using a 2-byte hexadecimal number. dhH = high nibble, dlH = low

nibble. E.g. Sending `10 will reset the display.

form, the host must send 60H twice, otherwise the module will interpret it as a hexadecimal prefix.

NORITAKE ITRON VFD MODULES GU128x8T-K612C5