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UPD7228 Datasheet(PDF) 9 Page - NEC

Part # UPD7228
Description  1/8, 1/16 DUTY LCD CONTROLLER/DRIVER
PDF  39 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD7228 Datasheet(HTML) 9 Page - NEC

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Data Sheet S10299EJ4V0DS00
9
µµµµ PD16434
1.12 C0 to C41 (Column) … Output
These pins serve as LCD column drive signal output pins.
1.13 R8/C49 to R15/C42 (Row/Column) … Output
These pins serve as LCD row drive signals R8 to R15 or column drive signals C49 to C42 output pins. Whether or
not these pins are used as row or column pins is specified by the SMM command.
1.14 R0/R8 to R7/R15 (Row) … Output
These pins serve as LCD row drive signals R0 to R7 or R8 to R15. Whether or not these pins are used as R0 to
R7 or R8 to R15 is specified by the SMM command.
1.15 VLC1 to VLC5 (LCD Drive Voltage Supply) … Input
These pins input the reference voltage for determining the LCD row/column drive signal voltage level.
1.16 CLOCK (Clock) … Input
This pin inputs the external clock.
1.17 RESET (Reset) … Input
This is the high active reset signal input pin. The reset operation has priority over all other operations.
This input is also used for cleaning the standby mode or operation to retain data in the data memory at a low
power supply voltage.
1.18 VDD
Positive voltage power supply pin.
1.19 VSS
Ground pin.



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