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PCA9554 Datasheet(PDF) 4 Page - NXP Semiconductors

Part No. PCA9554
Description  8-bit I2C and SMBus I/O port with interrupt
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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PCA9554 Datasheet(HTML) 4 Page - NXP Semiconductors

 
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Philips Semiconductors
Product data sheet
PCA9554/PCA9554A
8-bit I2C and SMBus I/O port with interrupt
2004 Sep 30
4
BLOCK DIAGRAM
POWER-ON
RESET
INPUT
FILTER
I2C/SMBUS
CONTROL
INPUT/
OUTPUT
PORTS
WRITE pulse
READ pulse
A0
A1
A2
SCL
SDA
VDD
VSS
8-BIT
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
SU01411
NOTE: ALL I/Os ARE SET TO INPUTS AT RESET
VCC
INT
LP
FILTER
Figure 3. Block diagram


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