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PDF OSD2002-2 Data sheet ( Hoja de datos )
| Número de pieza | OSD2002-2 | |
| Descripción | PLED 20x2 Character Module Specifications | |
| Fabricantes | OSD | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de OSD2002-2 (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
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One Stop Displays
310 Genius Drive
Winter Park, FL 32789
407-629-0500
OSD2002-2
PLED 20x2 Character Module Specifications
1 page  
3.4 Display Data RAM (DDRAM)
The Display Data RAM (DDRAM) is used to store the Display Data that is represented
as 8-bit character code. The Display Data RAM supports an extended capacity of 80 x
8-bits or 80 characters.
DDRAM
00 01 02 03 04 05 …… 22 23 24 25 26 27
Address (Hex) 40 41 42 43 44 45 …… 62 63 64 65 66 67
To illustrate, for 2-line x 20 characters display, the relationship between the DDRAM
address and position of the PLED panel is shown below.
Display
Position
DDRAM
Address
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13
40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53
For shift left
DDRAM 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14
Address 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54
For shift right
DDRAM 27 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 50 51 52
Address 67 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 50 51 52 53
5 Page 
3.8 Block Diagram
VDD
VSS
VBT
RS
R/W
E
D0~D7
Controller
&
Driver
PLED PANEL
16
20Char x 2Line
40 60
Driver
4 Interface Pin Function
Pin
No.
Symbol I/O
Function
1
VSS
I Ground
2 VDD I Power supply for logic
3
VBT
I Brightness adjustment
4
RS
I
H: Data
L: Instruction code
5
R/W
I
H: Read
L: Write
6 E I H L: Enable
7 D0 I
8 D1 I
9 D2 I
10
11
D3
D4
I
I
Data bus
12 D5 I
13 D6 I
14 D7 I
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet OSD2002-2.PDF ] | |
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