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ST7920 Datasheet(PDF) 22 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) 22 Page - Sitronix Technology Co., Ltd.

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ST7920
V4.0
22/49
2008/08/18
l
Write Data to RAM
Write data to the internal RAM and increase/decrease the (AC) by 1
Each RAM address (CGRAM, DDRAM and GDRAM
…) must write 2 consecutive bytes for 16-bit data. After
receiving the second byte, the address counter will increase or decrease by 1 according to the entry mode set
control bit.
l
Read RAM Data
Read data from the internal RAM and increase/decrease the (AC) by 1
After the operation mode changed to Read (CGRAM, DDRAM and GDRAM
…), a “Dummy Read” is required.
There is no need to add a
“Dummy Read” for the following bytes unless a new address set instruction is issued.
1
1
0
1
D7
D7
D6
D6
D5
D5
D4
D4
D3
D3
D2
D2
Code
Code
RS
RS
RW
RW
DB7
DB7
DB6
DB6
DB5
DB5
DB4
DB4
DB1
DB1
DB2
DB2
DB3
DB3
D1
D1
D0
D0
DB0
DB0


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