LK202-25-USB Matrix Orbital, LK202-25-USB Datasheet - Page 11
LK202-25-USB
Manufacturer Part Number
LK202-25-USB
Description
LCD Character Display Modules Yel/Grn Background Black Text
Manufacturer
Matrix Orbital
Datasheet
1.LK202-25-USB-WB.pdf
(59 pages)
Specifications of LK202-25-USB
Character Count X Line
20 x 2
Module Size (w X H X T)
116 mm x 37 mm x 25.73 mm
Fluid Type
STN
Voltage Rating
5 V
Operating Temperature Range
0 C to + 50 C
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2.2 Keypad Interface Connector
style keypad to be directly connected to the display module. The leftmost pin is connected to the ground
reference for the unit, and can be used as a grounding connection for an attached keypad. In addition, the
rightmost pin is also a ground pin by default, but is selectable as either ground or 5v power. Key presses are
generated when a short is detected between a row and a column. When a key press is generated a character,
which is associated with the particular key press, is automatically sent on the Tx communication line. The
character that is associated with each key press may be altered using the “Assign Key Codes” command, for
more detailed information see the Keypad Section, on page 32.
Matrix Orbital
The LK202-25-USB provides a Keypad Interface Connector which allows for up to a five by five matrix
Figure 9: Keypad Interface Connector
Figure 8: Alternate Power Connector
LK202-25-USB
Pin
Pin
Pin
Pin
4
1
2
3
NC
GND
GND
+5V
7
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