pca8576d NXP Semiconductors, pca8576d Datasheet - Page 21

• Manufacturer Part Number: pca8576d
• Description: Automotive 40 X 4 Lcd Segment Driver For Low Multiplex Rates Up To 1 4
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCA8576D
Product data sheet
7.16.5 I
7.16.6 Input filters
7.16.7 I
Acknowledgement on the I
The PCA8576D acts as an I
transmit data to an I
the acknowledge signals of the selected devices. Device selection depends on the
I
subaddress.
In single device applications, the hardware subaddress inputs A0, A1 and A2 are normally
tied to V
applications A0, A1 and A2 are tied to V
scheme such that no two devices with a common I
hardware subaddress.
To enhance noise immunity in electrically adverse environments, RC low-pass filters are
provided on the SDA and SCL lines.
Two I
The PCA8576D slave address is illustrated in
Table 7.
Bit
2
2
2
Fig 15. Acknowledgement of the I
•
C-bus slave address, on the transferred command data and on the hardware
C-bus controller
C-bus protocol
A master receiver must signal an end of data to the transmitter by not generating an
acknowledge on the last byte that has been clocked out of the slave. In this event the
transmitter must leave the data line HIGH to enable the master to generate a STOP
condition.
2
C-bus slave addresses (0111 000 and 0111 001) are reserved for the PCA8576D.
by transmitter
SS
data output
by receiver
data output
SCL from
Slave address
7
MSB
0
I
which defines the hardware subaddress 0. In multiple device
2
master
C slave address byte
All information provided in this document is subject to legal disclaimers.
2
condition
6
1
C-bus master receiver. The only data output from the PCA8576D are
START
S
Automotive 40 x 4 LCD segment driver for low multiplex rates
Rev. 1 — 4 April 2011
2
C-bus is shown in
2
C-bus slave receiver. It does not initiate I
5
1
2
1
C-bus
SS
4
1
or V
Table
Figure
2
DD
in accordance with a binary coding
3
0
2
C-bus slave address have the same
7.
15.
not acknowledge
2
0
acknowledge
8
PCA8576D
acknowledgement
clock pulse for
2
1
SA0
C-bus transfers or
© NXP B.V. 2011. All rights reserved.
9
mbc602
0
LSB
R/W
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