NORITAKE ITRON VFD MODULES 128 x 32 Dot Graphic
BLOCK DIAGRAM
GRAPHIC RAM
Dot Graphic VFD Module GU128X32-800A
ELECTRICAL SPECIFICATION
Parameter Symbol Value Condition
Power Supply Voltage VCC 5.0VDC +/- 5% GND=0V
Power Supply Current ICC 450mADC typ. VCC= 5V
Logic High Input VIH 4.0 VDC min. IIH = 2uA
Logic Low Input VIL 1.0 VDC max. IIL = -600uA
Logic High Output VOH 4.7 VDC min. IOH = -300uA
Logic Low Output VOL 0.3 VDC max. IOL = 300uA
Reset Input Voltage VRH 4.0 VDC min. IRH = 5uA
Reset Input Voltage VRL 0.6 VDC max. IRL = -600uA
The power on rise time should be less than 100ms.The inrush current at power on can be 2 x ICC.
OPTICAL and ENVIRONMENTAL SPECIFICATIONS
Parameter Value
Display Area (XxY mm) 83.05 x 20.65
Dot Size/Pitch (XxY mm) 0.5 x 0.5/0.65 x 0.65
Luminance 350 cd/m2 Min.
Colour of Illumination Blue-Green (Filter for colours)
Operating Temperature -40°C to +85°C
Storage Temperature -40°C to +85°C
Operating Humidity (non condensing)
20 to 80% RH @ 25°C
SOFTWARE COMMANDS
Instruction C//D Instruction Byte No. Bytes
Set Display On/Off / Layer Merge 120H-2FH 2
Set Display Brightness 140H-4FH 1
Clear Display 152H-5FH 1
Set Cursor XY Address 160H-67H 3
Set Display Start X Address 170H-7FH 2
Set Write Address Mode 180H-8FH 1
Scroll Display Vertically Up/Down
1B0H-BFH 1
Read Cursor XY Address 1D4H-D7H 3
Write Data 000H-FFH 1
X ADDRESS
q
128 x 32 Dot Graphic
q Operating Temp -40°C to +85°C
q Single 5V Supply.
q High Brightness Blue Green Display
q Selectable Parallel (i80/M68)/Serial Interface
q Twin Screen Graphic RAM
q 16 Level Brightness Control Function
The module includes the Vacuum Fluorescent Display
glass, driver and control ASIC, with integral refresh Graphic
RAM and logic for parallel and synchronous serial
interfaces. The high speed 8 bit parallel interface is 5V
CMOS compatible suitable for connection to a host CPU
bus. Brightness control and power down functions are
provided. A full data sheet is available.
CONTACT
Noritake Sales Office Tel Nos
Nagoya Japan: +81 (0)52-561-9867
Canada: +1-416-291-2946
Chicago USA: +1-847-439-9020
Munchen (D): +49 (0)89-3214-290
Itron UK: +44 (0)1493 601144
Rest Europe: +49 (0)61-0520-9220
www.noritake-itron.com
Y ADDRESS
The Graphic RAM is composed of 16384
bits arranged as (128 x 64 bits) x 2 and the
access is operated by 8 bit vertical data
Pin
i80 M68
Serial
Pin
Sig
1D7 D7 X2GND
3D6 D6 X4GND
5D5 D5 X6GND
7D4 D4 X8GND
9D3 D3 X10 GND
11 D2 D2 X12 GND
13 D1 D1 SO 14 GND
15 D0 D0 SI 16 GND
17 /WR R//W X18 GND
19 C//D C//D C//D 20 GND
21 /RD
ENCK
SCK 22 GND
23 /CSS /CSS /CSS 24 GND
25 FRP FRP FRP 26 /RES
SCROLLING GRAPHIC DISPLAY
The pattern in GRAM can be scrolled around the display. Horizontal scroll is achieved by
increment/decrement of the Display Start X Address. The vertical scroll process considers
layer 0, then layer 1 as a continuous 128 bit high vertical area within RAM.
D4
D0
D1
D2
D3
D5
D6
D7
BYTE FORMAT
3 PIN POWER CONNECTOR
Pin Sig
1Vcc
2Test (Factory only)
3GND
Subject to change without notice.
IUK Doc Ref: 03471 Iss:1 23/07/01
PCB JUMPERS
(O)pen (L)ink
Interface J1 J2
Serial LO / L
i80 Parallel O O
M68 Parallel OL
TIMING PARAMETERS
(min)
i80/M68 Parameters Time Serial Parameters Time
Write /WR/EN Cycle Time 400ns SCK Cycle Time
200ns
Write /WR/EN Pulse Width
100ns
SCK Pulse Width 80ns
Set Up To Write /WR/EN 30ns Set Up To SCK, /CSS=’L’ 40ns
Hold after Write /WR/EN 20ns
Delay After 8
th
bit, /CSS=’H’
150ns
00H………………………….7FH
GRAM
Layer 1
GRAM
Layer 0
…………….7FH
0H
1H
2H
3H
4H
5H
6H
7H
DH
EH
FH
Dimensions in mm & subject to tolerances.
Mounting holes 3.5mm dia.
1.6
10.8
±
1mm
10.0 max.
65.0
110.0
20.65
33.0
126.5
130.0
83.05
1.75
21.75
4.0
30.5
38.5
IDC(IMSA-9032B-26P)
11.15
1.5
PWR(JST-B3B-XH-A)
RD (ENCK)
DC/DC + AC
Conv.
BD VFD
D0~D7
WR (R/W)
CSS
C/D
FRP
VCC
GRAPHIC
RAM
DISPLAY
CONTROLLER
GND
ANODE + GRID (DC)
FILAMENT (AC)
SI
SO
/RES
1