KS0072 Ver la hoja de datos (PDF) - Samsung
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KS0072 Datasheet PDF : 32 Pages
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KS0072
PRELIMINARY SPECIFICATION
DOT MATRIX LCD CONTROLLER & DRIVER
Character Generator RAM (CGRAM)
CGRAM is used for user defined character pattern. The format of the character pattern is 5 X 7 dots except for
the cursor position and has a maximum of 4 characters. To use the character pattern in CGRAM write the char-
acter code intoDDRAM as shown in table 2.
Table 2. Relationship between Character Code (DDRAM) and Character Pattern (CGRAM)
Character Code(DDRAM data)
7 65 4 3 2 1 0
000 0* * 00
.
.
.
.
000 0* * 00
CGRAM address
43210
00
00
00
00
00
00
00
00
000
001
010
011
100
101
110
111
.
.
.
.
11
11
11
11
11
11
11
11
.
.
.
.
000
001
010
011
100
101
110
111
CGRAM data
Pattern
4 3 210
Number
01110
10001
10001
11111
Pattern 1
10001
10001
10001
00000
<-- cursor posi-
tion
.
.
.
.
.
.
.
.
1 1 1 10
10001
10001
10001
10001
10001
Pattern 4
11110
00000
<-- Cursor posi-
tion
NOTE : the asterisk means “don’t care”.
Character Generator ROM (CGROM)
CGROM generates 5 X 8 character pattern from character generate code in DDRAM. CGROM has 5 X 8-dot
240 character pattern including cursor position. If the data in cursor position bit are high, the data are included to
the character pattern. So, the slected positions are always ON regardless to cursor position.
The relationship between character code and character pattern can be referred to table 3.
LDI-97-D001
8
97-10-23
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