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ST7920 Datasheet(PDF) 13 Page - Sitronix Technology Co., Ltd.

Part No. ST7920
Description  Chinese Fonts built in LCD controller/driver
Download  49 Pages
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Manufacturer  SITRONIX [Sitronix Technology Co., Ltd.]
Direct Link  http://www.sitronix.com.tw
Logo SITRONIX - Sitronix Technology Co., Ltd.

ST7920 Datasheet(HTML) 13 Page - Sitronix Technology Co., Ltd.

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ST7920
V4.0
13/49
2008/08/18
DDRAM data
(char. code)
CGRAM
Addr.
CGRAM data
(higher byte)
CGRAM data
(lower byte)
B15~ B4
B
3
B
2
B
1
B
0
B
5
B
4
B
3
B
2
B
1
B
0
D
1
5
D
1
4
D
1
3
D
1
2
D
1
1
D
1
0
D
9
D
8
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
0 0 0 0 0 0 0 0 0 1 0 0 0 1 1 0 0 0 0 0
0 0 0 1 1 1 1 1 1 1 1 0 0 1 0 0 0 0 0 0
0 0 1 0 0 0 0 1 0 0 0 0 0 1 0 0 0 1 0 0
0 0 1 1 0 0 0 1 0 0 0 0 0 1 1 1 1 1 1 0
0 1 0 0 0 0 1 0 0 1 0 0 1 0 0 0 0 1 0 0
0 1 0 1 0 0 1 1 1 1 0 0 1 0 0 0 0 1 0 0
0 1 1 0 0 1 1 0 0 1 0 1 0 1 0 0 1 0 0 0
0 1 1 1 1 0 1 0 0 1 1 0 0 1 0 0 1 0 0 0
1 0 0 0 0 0 1 0 0 1 0 0 0 1 0 1 0 0 0 0
1 0 0 1 0 0 1 0 0 1 0 0 0 0 0 1 0 0 0 0
1 0 1 0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 0
1 0 1 1 0 0 1 1 1 1 0 0 0 0 1 0 0 0 0 0
1 1 0 0 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 0
1 1 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0
1 1 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0
0
X 00 X 00
1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 0
0 0 0 1 0 0 0 1 1 0 1 0 0 0 0 0 0 1 0 0
0 0 1 0 0 0 1 0 0 0 0 1 0 0 1 1 0 1 0 0
0 0 1 1 0 1 0 1 1 1 0 1 1 0 1 0 0 1 0 0
0 1 0 0 1 0 0 0 0 0 0 0 1 0 1 0 0 1 0 0
0 1 0 1 0 1 1 1 1 1 1 1 0 0 1 0 0 1 0 0
0 1 1 0 0 1 0 0 0 0 0 1 0 0 1 0 0 1 0 0
0 1 1 1 0 1 1 1 1 1 1 1 0 0 1 0 0 1 0 0
1 0 0 0 0 1 0 0 0 0 0 1 0 0 1 0 0 1 0 0
1 0 0 1 0 1 1 1 1 1 1 1 0 0 1 0 0 1 0 0
1 0 1 0 0 1 0 0 0 0 0 0 0 0 1 0 0 1 0 0
1 0 1 1 0 1 1 1 1 1 1 1 1 0
0 0 1 0 0
1 1 0 0 1 0 1 0 0 0 0 0 1 0 1 0 0 1 0 0
1 1 0 1 1 0 1 1 1 1 1 1 1 0 0 1 1 1 0 0
1 1 1 0 1 0 1 0 0 0 0 0 1 0 0 0 1 0 0 0
0
X 01 X 01
1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Table 5: DDRAM data (character code) vs. CGRAM data/address map
Note:
1.
DDRAM data (character code) bit1 and bit2 are identical with CGRAM address bit4 and bit5.
2.
CGRAM address bit0 to bit3 specify total 16 rows. Row-16 is for cursor display. The data in Row-16 will be logically OR to the cursor.
3.
CGRAM data for each address is 16 bits.
4.
To select the CGRAM font, the bit4 through bit15 of DDRAM data must be
“0” while bit0 and bit3 are “don’t care”.


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