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PCA9556PW Datasheet(PDF) 5 Page - NXP Semiconductors

Part # PCA9556PW
Description  Octal SMBus and I2C registered interface
PDF  13 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

PCA9556PW Datasheet(HTML) 5 Page - NXP Semiconductors

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Philips Semiconductors
Product data
PCA9556
Octal SMBus and I2C registered interface
2002 Mar 28
5
SIMPLIFIED SCHEMATIC OF I/O0
WRITE PULSE
DATA FROM
SHIFT REGISTER
I/O0
VSS
WRITE
CONFIGURATION
PULSE
D
CK
FF
Q
D
CK
Q
FF
D
CK
Q
FF
D
CK
Q
FF
INPUT PORT
REGISTER
POLARITY
INVERSION
REGISTER
OUTPUT
PORT
REGISTER
DATA FROM
SHIFT REGISTER
DATA FROM
SHIFT REGISTER
WRITE POLARITY
PULSE
CONFIGURATION
REGISTER
OUTPUT PORT
REGISTER DATA
INPUT PORT
REGISTER DATA
POLARITY
REGISTER DATA
SW00795
READ PULSE
ESD PROTECTION DIODE
Q
Q
Q
Q
NOTE:
On power–up or reset, all registers return to default values.
Figure 4. Simplified schematic of I/O0



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