LK204-25-R Matrix Orbital, LK204-25-R Datasheet - Page 15

• Manufacturer Part Number: LK204-25-R
• Description: LCD Character Display Modules Black Background Red Text
• Manufacturer: Matrix Orbital
• Series: LK204-25r

Specifications of LK204-25-R

• Character Count X Line: 20 x 4
• Module Size (w X H X T): 98 mm x 60 mm x 27.5 mm
• Fluid Type: STN
• Background Color: Black
• Voltage Rating: 5 V
• Operating Temperature Range: 0 C to + 50 C
• Backlight Type: LED Red
• Display Mode: Transmissive
• Display Type: TN - Twisted Nematic
• Number Of Digits/alpha: 80
• Outline L X W X H: 98.00mm x 60.00mm x 27.50mm
• Viewing Area: 76.00mm L x 25.20mm W
• Backlight: -
• Display Format: 20 x 4
• Character Size: 4.75mm H x 2.95mm W
• Character Format: 5 x 7 Dots
• Voltage - Supply: 5.0V
• Dot Size: -
• Interface: I²C, RS232, TTL
• Operating Temperature: 0°C ~ 50°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Power Through DB9 Jumper
In order to provide power through pin 9 of the DB-9 Connector you must connect the Power Through
DB-9 Jumper labelled R17, as illustrated below. This connection can be made using a zero ohm resistor,
recommended size 0603, or a solder bridge. The LVK204-25 allows all voltage models to use the power
through DB-9 option, see the electrical specifications in Table 40 for voltage requirements.
Power Through DB9 Jumper
Protocol Select Jumpers
The Protocol Select Jumpers provide the means necessary to toggle the standard LVK204-25 model
between RS-232, TTL and I²C protocols. As a default, the jumpers are set to RS-232 mode with solder
jumps on the 232 jumpers. In order to place the display module in I²C mode you must first remove the
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solder jumps from the 232 jumpers and then place them on the I
C jumpers. The display will now be in
I²C mode and have a default slave address of 80, unless it has been changed. Similarly, in order to
change the display to TTL mode, simply remove the zero ohm resistors from the 232 or I²C jumpers and
solder them to the TTL jumpers. Protocol changes are only supported on the standard unit.
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