LC75811W Sanyo Semicon Device, LC75811W Datasheet - Page 8

• Manufacturer Part Number: LC75811W
• Description: 1/8 to 1/10 Duty Dot Matrix LCD Display Controller/Driver
• Manufacturer: Sanyo Semicon Device

• ADRAM (Additional data RAM)
• When the ADRAM address loaded into AC is 0
However, when the display shift is performed by specifying ADATA, the ADRAM address shifts as shown below.
Note: *4. The ADRAM addresses are expressed in hexadecimal.
Example: When the ADRAM address is A
Note: *5. 5 7 dots ... 12-digit display
• CGROM (Character generator ROM)
• CGRAM (Character generator RAM)
Display digit
ADRAM address (hexadecimal)
Display digit
ADRAM address (hexadecimal)
Display digit
ADRAM address (hexadecimal)
ADRAM address
ADRAM is RAM used to store the ADATA display data. ADRAM has a capacity of 12
data is displayed directly without the use of CGROM or CGRAM. The table below lists the correspondence between
the 4-bit ADRAM address loaded into AC and the display position on the LCD panel.
CGROM is ROM used to generate the 240 kinds of 5
character codes. CGROM has a capacity of 240
pattern stored in CGROM corresponding to the character code is displayed at the position on the LCD corresponding to
the DCRAM address loaded into AC.
CGRAM is RAM to which user programs can freely write arbitrary character patterns. Up to 16 kinds of 5
or 5 9 dot matrix character patterns can be stored. CGRAM has a capacity of 16 45 bits.
RA0
0
5 8 dots ... 12-digit display
5 9 dots ... 12-digit display
RA1
Least significant bit
1
LSB
RA0
RA2
0
RA1
Hexadecimal
RA3
1
B
1
0
1
1
1
RA2
2
1
2
2
2
0
Most significant bit
3
2
3
3
3
1
H
RA3
MSB
5 dots
4 dots
3 dots
4
3
4
4
4
2
H
LC75811E, 75811W
. (Number of digit displayed: 12)
45 bits. When a character code is written to DCRAM, the character
5
4
5
5
5
3
6
5
6
6
6
4
7, 5
7
6
7
7
7
5
8, or 5
8
7
8
8
8
6
9 dot matrix character patterns from the 8-bit
9
8
9
9
9
7
10
10
10
A
9
8
11
11
11
A
B
9
12
12
12
5 bits, and the stored display
B
0
A
(Left shift)
(Right shift)
No. 5915-8/27
7, 5
8,