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HD44780 Datasheet(PDF) 56 Page - Hitachi Semiconductor

Part No. HD44780
Description  Dot Matrix Liquid Crystal Display Controller/Driver
Download  59 Pages
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Maker  HITACHI [Hitachi Semiconductor]
Homepage  http://www.renesas.com/eng
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 56 page
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HD44780U
56
13. RCOM is the resistance between the power supply pins (V
CC, V1, V4, V5) and each common signal pin
(COM1 to COM16).
RSEG is the resistance between the power supply pins (V
CC, V2, V3, V5) and each segment signal pin
(SEG1 to SEG40).
14. The following graphs show the relationship between operation frequency and current consumption.
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
100
200
300
400
500
VCC = 5 V
0
100
200
300
400
500
VCC = 3 V
fOSC or fcp (kHz)
fOSC or fcp (kHz)
max.
typ.
max.
typ.
15. Applies to the OSC1 pin.
16. Each COM and SEG output voltage is within
±0.15 V of the LCD voltage (V
CC, V1, V2, V3, V4, V5)
when there is no load.




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