LK202-25-WB Matrix Orbital, LK202-25-WB Datasheet - Page 40

• Manufacturer Part Number: LK202-25-WB
• Description: LCD ALPHA/NUM DISPL 20X2 BLU/WHT
• Manufacturer: Matrix Orbital

Specifications of LK202-25-WB

• 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
• 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
• Background Color: Blue
• Voltage Rating: 5 V
• Operating Temperature Range: 0 C to + 50 C
• Backlight Type: LED White
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Display Type: -
• Backlight: -
• Lead Free Status / Rohs Status: Details
• Other names: 635-1018

9 Keypad
9.1 Introduction
to be automatically transmitted via RS-232 or polled through I
repeating key presses, and remapping of all keypad character codes.
not be damaged by reversing the connector. However, the keypad will generate a different ASCII character
mapping for each position. If the connector has fewer than 10 pins it should be centered on the display
Matrix Orbital
The LK202-25 supports up to a 25 key, matrix style, keypad and may be configured to allow key presses
The connector is not keyed so the keypad will probably plug in either of two ways. The display will
Description
Remembered
This command will perform a single transaction on the 1-wire bus in
this order:
The number of bits to be transmitted and read must be specified for this
command to be successful.
NOTE To determine what functions the device will respond to, consult the devices’ data
sheet.
No
1. Bus Reset.
2. Transmit data onto the bus.
3. Receive data from the bus.
Bit
7
6
5
4
3
2
1
0
Assume last received byte is a CRC8 and validate it
Add a CRC8 to the end of the transmitted data
Code
0x00
0x01
0x02
0x03
LK202-25
Reset bus before transaction
1-Wire Error Codes
(0 for future compatibility)
(0 for future compatibility)
Unknown 1-Wire Command
1-Wire Flags
No devices on the bus
Fatal search error
Description
Description
Unused
Success
2
C. The LK202-25 also allows for auto-
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