GLK19264-7T-1U-WB Matrix Orbital, GLK19264-7T-1U-WB Datasheet - Page 26

• Manufacturer Part Number: GLK19264-7T-1U-WB
• Description: LCD Character Display Modules Blue Background White Text
• Manufacturer: Matrix Orbital

Specifications of GLK19264-7T-1U-WB

• Character Count X Line: 32 x 8
• Module Size (w X H X T): 82 mm x 28.4 mm
• Features: I2C LCD with keypad interface
• Background Color: Blue
• Voltage Rating: 5 VDC
• Operating Temperature Range: - 20 C to + 70 C
• Backlight Type: LED White
• Interface: I2C
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

byte. So if you continue the process you will get the character data as seen in table 5.1.2.
Character Data
every glyph in the font file.
beginning of the file (including the header. The third byte is the width of the glyph in pixels. So because
there will be 0x09 bytes in the character table (three bytes for each glyph) and four bytes in the header
section, the first entry in the table will be 13, or 0x00 0x0D in hexadecimal, and 0x05 for the width.
glyph, take the offset of the first entry and add the size of the first bitmap in bytes. Since the first glyph
occupies 0x05 bytes as seen in table 5.1.2 above, and the offset is 0x00 0x0D, the offset of the second entry
will be 0x00 0x12 and the width of the glyph is 0x03.
table 10.
Red = Header
Blue = Character Table
Purple = Character Data
5.2 Uploading a Font File
Matrix Orbital
As you can see the letter h will take up five bytes with the last five bits being zero padded to form a full
The second part of the font file is the character table. The character table is comprised of three bytes for
The first two bytes represents the position, in bytes, of the glyph stored MSB LSB referenced from the
To calculate the second entry in the character table, representing the position and width of the second
Calculate the third entry the same way as the second to get table 9 below.
Once completed, place the character table after the header and the character data aat the end, as seen in
h
i
j
h
i
j
0x2D
0xC6
0x84
0x43
0x05
0x12
0x60
High Offset (MSB)
0x2D
0x07
0x03
0x20
0x24
0x98
0x00
0x00
0x00
Character Data
0x68
0x00
0x43
0x98
0x84
0x19
Table 10: Sample Font File
Table 9: Character Table
GLK19264-7T-1U
0x6A
0x15
0x24
0xC6
0x60
Low Offset (LSB)
0x0D
0x12
0x15
0x00
0x04
0x84
0x20
0x0D
0x2D
0x84
Byte Size (For Reference)
Character Width
0x2D
0x05
0x98
0x05
0x03
0x04
0x05
0x03
0x04
0x00
0x98
0x19
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