pca8576c NXP Semiconductors, pca8576c Datasheet - Page 22

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

NXP Semiconductors
PCA8576C
Product data sheet
7.16.5 PCA8576C I
7.16.6 Input filter
7.17 I
The PCA8576C acts as an I
transmit data to an I
the acknowledge signals of the selected devices. Device selection depends on the
I
In single device application, the hardware subaddress inputs A0, A1, and A2 are normally
tied to V
A0, A1, and A2 are tied to V
devices with a common I
In the power-saving mode it is possible that the PCA8576C is not able to keep up with the
highest transmission rates when large amounts of display data are transmitted. If this
situation occurs, the PCA8576C forces the SCL line LOW until its internal operations are
completed. This is known as the clock synchronization feature of the I
to slow down fast transmitters. Data loss does not occur.
To enhance noise immunity in electrically adverse environments, RC low-pass filters are
provided on the SDA and SCL lines.
Two I
The least significant bit of the slave address that a PCA8576C responds to is defined by
the level tied at its input SA0. Therefore, two types of PCA8576C can be distinguished on
the same I
2
2
Fig 15. Acknowledgement of the I
C-bus slave address, the transferred command data and the hardware subaddress.
•
•
C-bus protocol
Up to 16 PCA8576Cs on the same I
The use of two types of LCD multiplex on the same I
2
C-bus slave addresses (0111000 and 0111001) are reserved for the PCA8576C.
by transmitter
SS
data output
by receiver
data output
SCL from
2
which defines the hardware subaddress 0. In multiple device applications
C-bus which allows:
master
2
C-bus controller
All information provided in this document is subject to legal disclaimers.
2
condition
C-bus master receiver. The only data output from the PCA8576C are
START
S
Rev. 1 — 22 July 2010
2
C-bus slave address have the same hardware subaddress.
2
SS
C-bus slave receiver. It does not initiate I
or V
2
1
DD
C-bus
using a binary coding scheme so that no two
2
C-bus for very large LCD applications.
Universal LCD driver for low multiplex rates
2
2
C-bus.
not acknowledge
acknowledge
8
PCA8576C
acknowledgement
clock pulse for
2
2
C-bus and serves
C-bus transfers or
© NXP B.V. 2010. All rights reserved.
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