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ST7920 Datasheet(PDF) 37 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) 37 Page - Sitronix Technology Co., Ltd.

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ST7920
V4.0
37/49
2008/08/18
LCD driving wave form (1/33 duty, 1/5 bias )
When oscillation frequency is 540KHZ, 1 clock cycle time = 1.85us
1 frame = 1.85us x 300 x 33 = 18315us=18.3ms
1
2
3
4
33
1
2
3
4
33
1
2
3
4
33
V0
V1
V2
V3
V4
VSS
COM1
V0
V1
V2
V3
V4
VSS
COM2
V0
V1
V2
V3
V4
VSS
COM33
V0
V1
V2
V3
V4
VSS
SEGx
off
V0
V1
V2
V3
V4
VSS
SEGx
on
1 frame
300 clocks


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