20T202DA1E Pacer Components, 20T202DA1E Datasheet - Page 16

• Manufacturer Part Number: 20T202DA1E
• Description: Vacuum Fluorescent Display Module
• Manufacturer: Pacer Components

2X20 LCD Compatible VFD Module
6.3 Example of Initialization After Power ON (4-bits data, date increment etc.)
* Note) “Dn” is the binary data to be written-in.
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
0
1
0
1
0
1
0
Power ON
0
0
0
0
0
0
0
0
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
0
0
*
*
*
1
1
0
Display ON/OFF
0
1
*
*
*
0
1
0
……
……
……
1
0
*
*
*
0
0
0
Function Set
D4 D3 D2 D1 D0
D4 D3 D2 D1 D0
D4 D3 D2 D1 D0
1
0
0
0
0
1
0
0
0
1
Fig.-13 Example of Initialization after Power ON
……
……
……
*
0
0
0
1
0
0
0
0
0
Character Code Write-in
20T202DA1E (Rev. 3.0)
CG-RAM Address Set
0
0
0
0
0
Page - 16 of 17
Writes data in CG-RAM in 4-bit mode, every bytes data needs
to transfer twice in serial port.
CG-RAM were defined one time.
Function set:
- Data length: 8 bits
- Display line No.: 2 lines
- Brightness: 100%
CG-RAM address set to 00H
DD-RAM address set to 00H (the first column of upper line)
Writes data into DD-RAM (choose the character codes to
display in upper line)
Totally 16 bytes in the upper line (16 characters)
DD-RAM address set to 40H (the first column of lower line)
Writes data into DD-RAM (choose the character codes to
display in lower line)
Totally 16 bytes in the lower line (16 characters)
Display ON, Cursor OFF, Cursor blink OFF
128 bytes data are needed in the serial port if 8 characters of
Wait for 100 us after Power ON
Description
CG-RAM Data Define
DD-RAM Address Set