LCD0821-VPT Matrix Orbital, LCD0821-VPT Datasheet - Page 27

• Manufacturer Part Number: LCD0821-VPT
• Description: LCD ALPHA/NUM DISPL 8X2 Y/G BK
• Manufacturer: Matrix Orbital
• Series: LCD0821r

Specifications of LCD0821-VPT

• Display Type: TN - Twisted Nematic
• Display Mode: Reflective
• Number Of Digits/alpha: 16
• Outline L X W X H: 58.00mm x 32.00mm x 25.00mm
• Viewing Area: 38.00mm L x 16.00mm W
• Backlight: LED - Yellow/Green
• Display Format: 8 x 2
• Character Size: 5.56mm H x 2.96mm W
• Character Format: *
• Voltage - Supply: 12V
• Dot Size: 0.06mm W x 0.17mm H
• Interface: I²C, RS232, TTL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Operating Temperature: -
• Other names: LCD082-VPT; LCD082-VPT

6.3 Saving Custom Characters
Matrix Orbital
Description
Remembered
Syntax
Parameters
The LCD0821 allows for upta to eight custom defined characters to be
added onto the the character set. A custom character is a five by eight
pixel matrix with each row represented by a byte value. For example:
Each bit value of one, in the table, represents an on pixel, whereas a value
of zero represents a pixel that is turned off. Therefore in order to define
custom character ’h’ you would send the command byte prefix 254 fol-
lowed by the command 78. Next, you will have to select the memory
location in which you wish to save the character in. The available mem-
ory locations for this command are zero through to seven. After sending
the memory location, or [refID], you may then send the eight byte custom
character data in sequence from the top to the bottom.
Once you have defined a custom character you may display it by sending
the display module the [refID]. For example if a custom character was
saved in position one, the command to display the custom character, at
the current cursor position, would be simply to send the number one to
the display module without quotes.
No
Hexadecimal
Decimal
Parameter
Bank
ID
Data
1
1
1
1
1
1
1
1
Custom Character ’h’
0
0
0
0
0
1
0
0
0xFE 0xC1 [Bank] [ID] [Data]
254 193 [Bank] [ID] [Data]
LCD0821
Length
0
0
0
0
1
0
0
0
1
1
8
0
0
0
0
1
0
0
0
Description
Memory bank to save to (0-4).
Character ID (0-7)
Character Definition
0
0
0
0
0
1
1
1
Decimal
16
16
16
16
22
25
17
17
0x10
0x10
0x10
0x10
0x16
0x19
0x11
0x11
Hex
23