GLK240128-25-WB-VPT Matrix Orbital, GLK240128-25-WB-VPT Datasheet - Page 16

• Manufacturer Part Number: GLK240128-25-WB-VPT
• Description: LCD GRAPHIC DISPL 240X128 BLU WH
• Manufacturer: Matrix Orbital
• Series: GLK240128-25r

Specifications of GLK240128-25-WB-VPT

• Display Type: LCD - Color
• Display Mode: Transmissive
• Viewing Area: 114.00mm L x 64.00mm W
• Backlight: LED - Blue
• Dot Pixels: 240 x 128
• Interface: I²C, RS232, TTL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Dot Size: -
• Dot Pitch: -
• Other names: GLK240128-25 -WB-VPT; GLK240128-25 -WB-VPT

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 R82, as illustrated below. This connection can be made using a zero ohm resistor,
recommended size 0603, or a solder bridge. The GLK240128-25/GLT240128 allows all voltage models to
use the power through DB-9 option, see the specifications in Table 62 for voltage requirements.
Power Through DB9 Jumper
Alternate Serial Header
Some advanced applications may prefer the straight two by five pin connection offered through the
optional Alternate Serial Header. This header offers power and communication access in a simple
interface package. The Alternate Serial Header may be added to the GLK240128-25/GLT240128
Standard model for an added charge as part of a custom order. Please Contact sales for details.
Protocol Select Jumpers
The Protocol Select Jumpers provide the means necessary to toggle the standard GLK240128-
25/GLT240128 model between RS-232, TTL and I²C protocols. As a default, the jumpers are set to RS-
232 mode with solder jumps on the RS232 jumpers. In order to place the display module in I²C mode
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you must first remove the solder jumps from the RS232 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 changed
with the appropriate command. Similarly, in order to change the display to TTL mode, simply remove
the zero ohm resistors from the RS232 or I²C jumpers and solder them to the TTL jumpers.
Hardware Lock
The Hardware Lock allows fonts, bitmaps, and settings to be saved, unaltered by any commands. By
connecting the two pads near the memory chip, designated as R60, with a zero ohm resistor, the display
will be locked. This supersedes the data lock command and cannot be circumvented by any software
means. To unlock the display and make changes simply remove the jumper.
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