pca9554ad NXP Semiconductors, pca9554ad Datasheet - Page 3
pca9554ad
Manufacturer Part Number
pca9554ad
Description
8-bit I2c And Smbus I/o Port With Interrupt
Manufacturer
NXP Semiconductors
Datasheet
1.PCA9554AD.pdf
(30 pages)
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4. Block diagram
PCA9554_9554A_7
Product data sheet
Fig 1. Block diagram of PCA9554/PCA9554A
SDA
SCL
V
V
A0
A1
A2
DD
SS
All I/Os are set to inputs at reset.
PCA9554/PCA9554A
Rev. 07 — 13 November 2006
POWER-ON
FILTER
RESET
INPUT
I
2
C-BUS/SMBus
8-bit I
CONTROL
2
PCA9554/PCA9554A
C-bus and SMBus I/O port with interrupt
write pulse
read pulse
8-bit
FILTER
OUTPUT
PORTS
INPUT/
LP
002aac492
© NXP B.V. 2006. All rights reserved.
V
DD
IO0
IO1
IO2
IO3
IO4
IO5
IO6
IO7
INT
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