pca8533 NXP Semiconductors, pca8533 Datasheet - Page 35

• Manufacturer Part Number: pca8533
• Description: Universal Lcd Driver For Low Multiplex Rates
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCA8533
Product data sheet
The contact resistance between the SYNC pins of cascaded devices must be controlled. If
the resistance is too high then the device will not be able to synchronize properly. This is
particularly applicable to COG applications.
resistance.
Table 20.
Number of devices
2
3 to 5
6 to 10
11 to 16
Fig 25. Synchronization of the cascade for the various PCA8533 drive modes
SYNC contact resistance
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 — 27 April 2011
(b) 1:2 multiplex drive mode.
(c) 1:3 multiplex drive mode.
(d) 1:4 multiplex drive mode.
(a) static drive mode.
T
Universal LCD driver for low multiplex rates
fr
Table 20
=
Maximum contact resistance
6000 Ω
2200 Ω
1200 Ω
700 Ω
f
1
fr
shows the limiting values for contact
mgl755
PCA8533
© NXP B.V. 2011. All rights reserved.
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