Datasheet

Data Output
by Transmitter
SCL From
Master
Start
Condition
S
1 2 8 9
Data Output
by Receiver
Clock Pulse for
Acknowledgment
NACK
ACK
PCA9555
www.ti.com .........................................................................................................................................................SCPS131E–AUGUST2005–REVISEDMAY2008
Figure3.AcknowledgmentonI
2
CBus
InterfaceDefinition
BIT
BYTE
7(MSB)6543210(LSB)
I
2
CslaveaddressLHLLA2A1A0R/W
P0xI/OdatabusP07P06P05P04P03P02P01P00
P1xI/OdatabusP17P16P15P14P13P12P11P10
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ProductFolderLink(s):PCA9555
Not Recommended for New Designs