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PCF8531 датащи(PDF) 36 Page - NXP Semiconductors

номер детали PCF8531
подробное описание детали  34 x 128 pixel matrix driver
PDF  44 Pages
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производитель  NXP [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF8531 датащи(HTML) 36 Page - NXP Semiconductors

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PCF8531_4
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 04 — 13 June 2008
36 of 44
NXP Semiconductors
PCF8531
34 x 128 pixel matrix driver
15.2 Chip-on-glass application
The required minimum values for the external capacitors in a chip-on-glass application
are:
• Cext = 100 nF between VLCD and VSS1, VSS2;Cext = 470 nF between VDD1,VDD2,VDD3
and VSS1, VSS2.
• Higher capacitor values are recommended for ripple reduction.
• For COG applications, the recommended ITO track resistance must be minimized for
the I/O and supply connections. Optimized values for these tracks are below 50
Ω for
the supply (Rsupply) and below 100 Ω for the I/O connections (RI/O).
• To reduce the sensitivity of the reset to ESD/EMC disturbances for a COG application,
NXP strongly recommended implementing a series input resistance in the reset line
(recommended minimum value 8 k
Ω) on the glass (ITO). If the reset input is not used,
this input must be connected to VDD1 using a short connection.
Fig 29. Chip-on-glass application
mgs484
3
DISPLAY 34
× 128 PIXELS
VDD1
to
VDD3
I/O
VSS1
VSS2
Cext
Rsupply
RI/O
VLCD
PCF8531
128
17
17



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