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PCF8575CDW Datasheet(PDF) 14 Page - Texas Instruments

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Part # PCF8575CDW
Description  SMBus Low-Power I/O Expander
PDF  38 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

PCF8575CDW Datasheet(HTML) 14 Page - Texas Instruments

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Data Output
by Transmitter
SCL from
Master
Start
Condition
S
1
2
89
Data Output
by Receiver
Clock Pulse for
Acknowledgment
NACK
ACK
SDA
SCL
Data Line
Stable;
Data Valid
Change
of Data
Allowed
PCF8575C
SCPS123F – MARCH 2005 – REVISED JANUARY 2015
www.ti.com
Feature Description (continued)
Figure 11. Bit Transfer
Figure 12. Acknowledgment on I2C Bus
8.3.2 Interface Definition
BIT
BYTE
7 (MSB)
6
5
4
3
2
1
0 (LSB)
I2C slave address
L
H
L
L
A2
A1
A0
R/W
P0x I/O data bus
P07
P06
P05
P04
P03
P02
P01
P00
P1x I/O data bus
P17
P16
P15
P14
P13
P12
P11
P10
14
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Copyright © 2005–2015, Texas Instruments Incorporated
Product Folder Links: PCF8575C



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