DD-DB1-AV204A Matrix Orbital, DD-DB1-AV204A Datasheet - Page 34

• Manufacturer Part Number: DD-DB1-AV204A
• Description: Display Modules & Development Tools DevDevil Dev Board 20x4 VFD Black Bg
• Manufacturer: Matrix Orbital
• Series: Dev Devilr

Specifications of DD-DB1-AV204A

• Main Purpose: Displays, VFD
• Embedded: Yes, ASIC
• Utilized Ic / Part: AL204A
• Primary Attributes: 20 x 4 Display, Yellow/Green Text Grey Background
• Secondary Attributes: GUI, mini USB
• Lead Free Status / Rohs Status: Details

8. Data Security
Allows changes to specific settings to be saved to the display memory. Writing to memory can be slow and each change
consumes 1 write of approximately 100,000 available. Set and save functions are always remembered. Off is default.
Switch
Temporarily locks certain aspects of the display to ensure no inadvertent changes are made. A new level overrides the
old, and levels can be combined. Default is 0.
Level
Permanently locks certain aspects of the display to ensure no inadvertent changes are made. A new level overrides the
old, and levels can be combined. Default is 0.
Level
8.1.Set
8.2.Data Lock
8.3.Set and Save
1 byte, each bit representing a level, see table below
Remember
Data Lock
1 byte, see data lock table
1 byte, 1 for on or 0 for off
Dec
Hex
Dec
Hex
Unlock Reserved Reserved Reserved Setting Reserved Command Display
0
Dec
Hex
Unlock
Reserved
Setting
Command
Display
254 202 245 160
254 147
254 203 245 160
FE 93
FE CA F5 A0
1
FE CB F5 A0
Switch
Switch
Unlocks all setting locks
Place holders only, should be 0
Locks settings such as backlight and contrast
Locks all commands
Locks entire display, no new information can be displayed
2
Level
Level
Level
Level
3
32
4
5
6
7