pcf85176 NXP Semiconductors, pcf85176 Datasheet - Page 33

• Manufacturer Part Number: pcf85176
• Description: Universal Lcd Driver For Low Multiplex Rates
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCF85176_1
Product data sheet
Table 19.
The PCF85176 can always be cascaded with other devices of the same type or
conditionally with other devices of the same family. This allows optimal drive selection for
a given number of pixels to display.
synchronization signals.
In a cascaded configuration only one PCF85176 master must be used as clock source. All
other PCF85176 in the cascade must be configured as slave such that they receive the
clock from the master.
If an external clock source is used, all PCF85176 in the cascade must be configured such
as to receive the clock from that external source (pin OSC connected to V
must be ensured that the clock tree is designed such that on all PCF85176 the clock
propagation delay from the clock source to all PCF85176 in the cascade is as equal as
possible since otherwise synchronization artefacts may occur.
In mixed cascading configurations, care has to be taken that the specifications of the
individual cascaded devices are met at all times.
Number of devices
2
3 to 5
6 to 10
10 to 16
SYNC contact resistance
All information provided in this document is subject to legal disclaimers.
Rev. 01 — 14 April 2010
Figure 21
Universal LCD driver for low multiplex rates
Maximum contact resistance
6 kΩ
2.2 kΩ
1.2 kΩ
700 Ω
and
Figure 24
show the timing of the
PCF85176
© NXP B.V. 2010. All rights reserved.
DD
). Thereby it
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