LCD0821-WB Matrix Orbital, LCD0821-WB Datasheet - Page 38
![LCD Character Display Modules Blue Background White Text](/photos/26/57/265788/lcd0821-wb-150_sml.jpg)
LCD0821-WB
Manufacturer Part Number
LCD0821-WB
Description
LCD Character Display Modules Blue Background White Text
Manufacturer
Matrix Orbital
Datasheet
1.LCD0821-V.pdf
(51 pages)
- Current page: 38 of 51
- Download datasheet (2Mb)
9.4 Set and Save Data Lock
Matrix Orbital
Description
Remembered
Default
Examples
Syntax
sending a zero will unlock your display as the following tables explains:
NOTES
Always
0
Paranoia allows you to lock the module from displaying information, as
Hexadecimal
Decimal
well as enables the protection of the filesystem and module settings.
• Sending a new data lock level will override the previous data lock level.
• Data lock levels may be combined.
Each bit corresponds corresponds to a different lock level, while
0x00
0x50
Bit
0-2
3
4
5
6
7
Hex
Data Lock Level
Reserved
Communication
Speed Lock
Setting Lock
Reserved
Command Lock
Display Lock
Dec
80
0
0xFE 0xCB 0xF5 0xA0 [level]
254 203 245 160 [level]
LCD0821
01010000
Binary
0
Setting and Command Lock
Description
Should be left 0
When this bit is set (1) the
Baud Rate and I
address are locked
When this bit is set (1)
the display settings such
as backlight, contrast and
GPO settings are locked.
(Internal EEPROM)
Should be left 0
When this bit is set (1) all
commands but commands
202/203 are locked. (cmd
lock)
When this bit is set (1) the
module is locked from dis-
playing any new informa-
tion. (text lock)
Description
Unlock
2
C Slave
34
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