LK204-25-R Matrix Orbital, LK204-25-R Datasheet - Page 35

• 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

8. Data Security
8.1. Set Remember
Allows changes to specific settings to be saved to the display memory. Writing to non-volatile memory can be slow
and each change consumes 1 write of approximately 100,000 available. The Command Summary outlines which
commands are saved always, never, and when this command is on only. Remember is off by default.
Switch
8.2. Set Data Lock
Temporarily locks certain aspects of the display to ensure no inadvertent changes are made. The lock is released
after a power cycle. A new level overrides the old, and levels can be combined. Default is 0.
Level
8.3. Set and Save
Locks certain aspects of the display to ensure no inadvertent changes are made. The lock is not affected by a
power cycle. A new level overrides the old, and levels can be combined. Default is 0.
Level
35
Data Lock
1 byte, each bit representing a level, see Table 25
1 byte, see data lock table
1 byte, 1 for on or 0 for off
Display
7
Dec
Hex
Dec
Hex
Dec
Hex
Command
Command
Reserved
Address
6
Display
Setting
254 202 245 160
254 203 245 160
254 147
FE 93
FE CA F5 A0
FE CB F5 A0
Reserved
Locks entire display, no new text can be displayed
5
Switch
Switch
Locks all commands, text can still be written
Table 26: Lock Parameters
Locks the Baud Rate and I
Table 25: Data Lock Bits
Locks all settings from being saved
Level
Level
Level
Level
Setting
Place holders only, should be 0
4
Address
3
Reserved
2
C address
2
Reserved
1
Reserved
0