DMX 973B
100 x 32 Pixel Graphic Dot Matrix Display
The DMX 973B incorporates the latest LCD controller LSI to provide a unique combination of a 100 x 32 pixel display
with compact size and ease of use. LED backlighting ensures excellent visibility under low light conditions. Easy to
install, the module features 16-pin dual in line connector. Supplied with bezel, window and clips. An optional metal
bezel, stock number BEZ 900-IP, provides protection toIP67/NEMA 4X.
FEATURES
• 100 x 32 Pixels
• High Contrast Supertwist LCD
• 6 o'clock Viewing Direction
• Yellow-Green LED Backlighting
• Based on Epson SED 1530 Controller
• 68XX, 80XX and Serial Interfaces
ORDERING INFORMATION
Stock Number
Standard Instrument DMX 973B
IP67 / NEMA 4X Bezel BEZ 900-IP
ELECTRICAL SPECIFICATIONS
Specification Min. Typ. Max. Unit
Supply Voltage (V+) 4.5 5.0 5.5 V d.c.
Supply Current
Input Voltage High 0.7V - V V
Input Voltage Low V - 0.3V V
Output Voltage High 0.8V - V V
Output Voltage Low V - 0.2V V
Backlight Supply Voltage - 5 5.5 V d.c.
Backlight Supply Current - 50 90 mA
Operating temperature range 0 50 °C
Normal 100
Standby 10
DD DD
SS DD
DD DD
SS DD
A
µ
SAFETY
To comply with the Low Voltage Directive(LVD 93/68/EEC), inputvoltagestothemodule’spinsmustnotexceed
60Vdc. The user must ensure that the incorporation ofthepanelinstrument into the user’s equipment conforms
to the relevant sections of BS EN 61010 (Safety Requirements for Electrical Equipment for Measuring, Control
and Laboratory Use).
LASCAR ELECTRONICS LTD.
MODULE HOUSE
WHITEPARISH
WILTSHIRE SP5 2SJ
UK
TEL: +44 (1794) 884567
FAX: +44 (1794) 884616
E-mail: sales@lascar.co.uk
LASCAR ELECTRONICS INC.
3750 West 26th Street
Erie
PA 16506
USA
TEL: +1 (814) 835 0621
FAX: +1 (814) 838 8141
E-mail: sales@lascarelectronics.com
www.lascarelectronics.com
LASCAR ELECTRONICS (HK) LIMITED
FLAT C, 5/FL., LUCKY FTY. BLDG.
63-65 HUNG TO ROAD
KWUN TONG KOWLOON
HONG KONG
TEL: +852 2797 3219
FAX: +852 2343 6187
E-mail: b4lascar@samsongroup.com.hk
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DMX 973B
PIN FUNCTIONS
100 x 32 Pixel Graphic Dot Matrix Display
1. 0V
2. +5V
3. RES
} Powersupply to thedotmatrix display.
Reset to initial settings. It is recommended that thispin is driven by the MPUbut, for compatibility with
the original DMX 973interface, this pin can beleft disconnected. The module contains aninternal RC
reset circuit that willreset on power-up.
4. A0 Control Data / Display Dataflag input. (0=Control Data, 1=Display Data)
5. R/W Read/Writeinput in 6800-seriesmode. (0=Write, 1=Read)
(WR) Write enablesignal in 8080-seriesmode.
6. E Enable clock signal in 6800-seriesmode.
(RD) Readenablesignal in8080-series mode.
7-14. D0-D7 8-Bitbi-directional microprocessordatabus. (D7= SI,D6=SCL inserial mode)
15. BL-
} Powersupply to theLEDbacklighting, electricallyisolated from pins1 and 2.
REFERENCE APPLICATIONS
Interface with 6800 Series
6800-series
MPU
A0
E
R/W
RES
D0 to D7
A0
E (RD)
R/W (WR)
RES
DMX 973B
(SED 1530)
D0
D7
Ensure solder link is
Open and
Ser
solder link 80xx
is Open.
(factory default condition)
RECOMMENDED INITIALISATION PROCEDURE
Turn on Power while maintaining RES Low
Cancel Reset, RES High
Set 1/5 LCD Bias (0xA3)
Set ADC Normal (0xA0)
Interface with 8080 Series
8080-series
MPU
Serial Interface
MPU
A0
RD
WR
RES
D0 to D7
A0
SI
SCL
RES
A0
E (RD)
R/W (WR)
RES
DMX 973B
(SED 1530)
D0
D7
A0
D7 (SI)
D6 (SCL)
RES
R/W (WR)
DMX 973B
(SED 1530)
Ensure solder link is
Open
(factory default
condition) solder link
Ser
and
80xx is Closed.
Ensure solder link is
Closed. S
Ser
older link 80xx
may be Open or Closed.
Fix R/W (WR) to GND.
Set Electronic Volume (contrast) (0x88)
Set Power Control
Voltage follower ON
Regulator ON
Booster ON
(0x2F)
Turn Display ON (0xAF)
Set Page to write, e.g. Page 0 (0xB0)
Set top left Column 16
4 higher bits (0x11)
4 lower bits (0x00)
Write display data
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