pca8576c NXP Semiconductors, pca8576c Datasheet - Page 35

• Manufacturer Part Number: pca8576c
• Description: Universal Lcd Driver For Low Multiplex Rates
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCA8576C
Product data sheet
Fig 28. Synchronization of the cascade for the various PCA8576C drive modes
Excessive capacitive coupling between SCL or CLK and SYNC will cause erroneous
synchronization. If this is a problem you can increase the capacitance of the SYNC line (e.g. by an
external capacitor between SYNC and V
can be countered by an external pull-up resistor.
All information provided in this document is subject to legal disclaimers.
(1/2 bias)
(1/3 bias)
(1/3 bias)
(1/3 bias)
BP0
SYNC
SYNC
SYNC
SYNC
BP0
BP0
BP0
BP0
Rev. 1 — 22 July 2010
(b) 1:2 multiplex drive mode.
(c) 1:3 multiplex drive mode.
(d) 1:4 multiplex drive mode.
(a) static drive mode.
DD
T
Universal LCD driver for low multiplex rates
fr
.) Degradation of the positive edge of the SYNC pulse
=
f
1
fr
PCA8576C
mgl755
© NXP B.V. 2010. All rights reserved.
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