SC204A ETC2 [List of Unclassifed Manufacturers], SC204A Datasheet - Page 7

• Manufacturer Part Number: SC204A
• Description: A dot-matrix character LCD module
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

RAM's address and the LCD's position shown bellows.
Display Character address code:
Display position
DDRAM Address
Relationship between Character Code (DDRAM) and character Pattern (CGRAM)
B7
1. ▆ It means that the bit0~2 of the character code correspond to the bit3~5 of the CG RAM address.
2. ▆ these areas are not used for display, but can be used for the general data RAM.
3. When all of the bit4-7 of the character code is 0, CG RAM character patterns are selected.
4. " 1 ": Selected," 0 ": No selected," X": Do not care (0 or 1).
5. for example (1), to set character code (b2 = b1 = b0 = 0, b3 = 0 or 1, b7-b4 = 0) is to display" T". That
means character code (00)16, and (08)16 can display" T” character.
6. The bits 0-2 of the character code RAM is character pattern line position. The 8th line is the cursor
position and display is formed by logical OR with the cursor
Akihabara Inc. www.akiba-tech.com
0
0
Character code DD RAM Data
g. Display Data (DD) RAM: This display data RAM is used to store the display data expressed by 8-bit
h. Cursor and Blink Control Circuit: This circuit generates the cursor and blink.
B6
0
0
character code . The capacity is 80x 8bits and data for 80 characters can be storage.
B5
0
0
B4
0
0
B3
x
x
00
40
1
B2
0
0
01
41
2
B1
0
0
B0
02
42
0
1
3
03
43
4
SC204A
B5
0
0
04
44
5
B4
CG RAM Address
0
0
05
45
B3
6
0
1
B2
06
46
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
7
B1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
07
47
8
B0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
08
48
9
10
09
49
B7
x
x
Character Pattern CG RAM Data
B6
0A
4A
x
x
11
B5
x
x
0B
4B
12
B4
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0C
4C
13
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B3
1
0
0
0
0
0
0
0
1
0
0
0
0
0
1
0
0D
4D
14
B2
1
1
1
1
1
1
1
0
1
1
1
1
1
1
1
0
0E
4E
15
VER2.1
B1
1
0
0
0
0
0
0
0
1
0
0
0
0
0
1
0
0F
4F
16
B0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0