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PCF2119RU2DB2 Scheda tecnica(PDF) 13 Page - NXP Semiconductors

Il numero della parte PCF2119RU2DB2
Spiegazioni elettronici  LCD controllers/drivers Single-chip LCD controller and driver
PDF  83 Pages
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Produttore elettronici  NXP [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF2119RU2DB2 Scheda tecnica(HTML) 13 Page - NXP Semiconductors

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PCF2119X
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 7 — 15 November 2010
13 of 83
NXP Semiconductors
PCF2119x
LCD controllers/drivers
Von(RMS) and Voff(RMS) are properties of the display driver and are affected by the selection
of a, n (see Equation 3 to Equation 5) and the VLCD voltage.
Vlow and Vhigh are properties of the LCD liquid and can be provided by the module
manufacturer.
It is important to match the module properties to those of the driver in order to achieve
optimum performance.
8.6 LCD row and column drivers
The PCF2119x contains 18 row and 80 column drivers, which drive the appropriate LCD
bias voltages in sequence to the display in accordance with the data to be displayed. R17
and R18 drive the icon rows. Unused outputs should be left open.
The bias voltages and the timing are selected automatically when the number of lines in
the display is selected. Figure 4 to Figure 6 show typical waveforms.
Fig 3.
Electro-optical characteristic: relative transmission curve of the liquid
VRMS [V]
100 %
90 %
10 %
OFF
SEGMENT
GREY
SEGMENT
ON
SEGMENT
Vlow
Vhigh
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