PCF8531U/2DA/1 View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
MFG CO.
'PCF8531U/2DA/1' PDF : 51 Pages View PDF
NXP Semiconductors
15.5 Chip-on-glass application
PCF8531
34 x 128 pixel matrix driver
DISPLAY 34 × 128 PIXELS
17
128
17
PCF8531
R I/O
Rsupply
3
I/O
Cext
VDD1
to
VDD3
VSS1
VSS2
VLCD
mgs484
Fig 33. 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 kΩ) on the glass (ITO). If the reset input is not used,
this input must be connected to VDD1 using a short connection.
PCF8531
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 6 — 16 May 2011
© NXP B.V. 2011. All rights reserved.
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