LK202-25-R-VPT Matrix Orbital, LK202-25-R-VPT Datasheet - Page 19

• Manufacturer Part Number: LK202-25-R-VPT
• Description: LCD ALPHA/NUM DISPL 20X2 BK RED
• Manufacturer: Matrix Orbital

Specifications of LK202-25-R-VPT

• Display Mode: Transmissive
• Number Of Digits/alpha: 40
• Outline L X W X H: 116.00mm x 37.00mm x 25.73mm
• Viewing Area: 82.20mm L x 18.20mm W
• Display Format: 20 x 2
• Character Size: 5.55mm H x 3.20mm W
• Character Format: 5 x 7 Dots
• Voltage - Supply: 5VDC
• Dot Size: 0.60mm W x 0.65mm H
• Interface: I²C, RS232, TTL
• Operating Temperature: 0°C ~ 50°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Display Type: -
• Backlight: -

2.7 Keypad Interface Connector
keypad to be directly connected to the display module. 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. If the display module is running
in I
in the buffer so that they may be polled. The character that is associated with each key press may also be
altered using the “Assign Key Codes” command, for more detailed information see the Keypad Section, on
page 36.
Matrix Orbital
2
The LK202-25 provides a Keypad Interface Connector which allows for up to a five by five matrix style
C mode, the “Auto Transmit Keypress” function may be turned off, to allow the key presses to remain
NOTE The display module will revert back to the old settings once turned off, unless the
settings are saved.
NOTE The Ground / +5V pin is toggled by the jumper to the right of the keypad connec-
tor. Jump 1 & 2 for +5V or 2 & 3 for GND.
Brightness
Baud Rate
I
Data Lock
RS232AutoTransmitData
Figure 21: Keypad Interface Connector
2
C Slave Address
Table 2: Default Values
LK202-25
19.2 kbps
False
0x50
True
255
15