16t202da1j Pacer Components, 16t202da1j Datasheet - Page 16

• Manufacturer Part Number: 16t202da1j
• Description: 2x16 Lcd Compatible Vfd Module
• Manufacturer: Pacer Components

2X16 LCD Compatible VFD Module
6.3 Example of Initialization After Power ON (8-bits data, date increment etc.)
6.2.11 Read Data from CG or DD-RAM
*Note): The address counter (ACC) is automatically increased or decreased by 1 after a writing instruction to
CG-RAM or DD-RAM is executed. The RAM data selected by the ACC cannot be read out at this time even if read
instructions are executed. Therefore, to correctly read data, execute either the address set instruction or cursor shift
instruction (only with DD-RAM), then just before reading the desired data, execute the read instruction from the second
time the read instruction is sent.
This instruction reads 8-bit binary data (DB7 to DB0) from CG-RAM or DD-RAM.
The previous designation determines whether CG-RAM or DD-RAM is to be read. Before entering this read instruction,
either CG-RAM or DD-RAM address set instruction must be executed. If not executed, the first read data will be
invalid. When serially executing read instructions, the next address data is normally read from the second read. The
address set instructions don’t need to be executed just before this read instruction when shifting the cursor by the cursor
shift instruction (when reading out DD-RAM).
The operation of the cursor shift instruction is the same as the set DD-RAM address instruction.
After a read, the entry mode automatically increases or decreases the address by 1.
* 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
RS = 1, R/W = 1
DB7
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
DB6
0
1
*
*
……
*
0
……
1
……
0
1
0
*
*
*
0
0
0
Function Set
DB5
Character Code (Read-out)
D4 D3 D2 D1 D0
D4 D3 D2 D1 D0
D4 D3 D2 D1 D0
1
0
0
0
0
DB4
1
0
0
0
1
Fig.-13 Example of Initialization after Power ON
……
……
……
*
0
0
0
1
DB3
0
0
0
0
0
Character Code Write-in
16T202DA1J (Rev. 4.0)
CG-RAM Address Set
DB2
0
0
0
0
0
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Function set:
- Data length: 8 bits
- Display line No.: 2 lines
- Brightness: 100%
CG-RAM address set to 00H
Writes data into CG-RAM (the user-definable characters)
64 bytes in total (8 characters)
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)
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
DD-RAM address set to 40H (the first column of lower line)
DB1
DB0
Wait for 100 us after Power ON
10H ~ FFH for CG-ROM Code
00H ~ 0FH for CG-RAM Code
Description
Hex. Range
CG-RAM Data Define
DD-RAM Address Set