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PCA9554CBS Datasheet(PDF) 24 Page - NXP Semiconductors

Part # PCA9554CBS
Description  Low-voltage 8-bit I2C-bus and SMBus low power I/O port with interrupt, weak pull-up
PDF  36 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCA9554CBS Datasheet(HTML) 24 Page - NXP Semiconductors

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PCA9554B_PCA9554C
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 1 — 19 September 2012
24 of 36
NXP Semiconductors
PCA9554B; PCA9554C
Low-voltage 8-bit I2C-bus/SMBus low power I/O port
a. Interrupt load configuration
b. Voltage waveforms
CL includes probe and jig capacitance.
All inputs are supplied by generators having the following characteristics: PRR
 10 MHz; Z
o =50 ; tr/tf  30 ns.
All parameters and waveforms are not applicable to all devices.
(1) PCA9554B address shown. Address for PCA9554C is 0111,A2,A1,A0.
Fig 27. Interrupt load circuit and voltage waveforms
002aah069
DUT
CL = 100 pF
RL = 4.7 kΩ
INT
VDD
1
0
0
A2 A1 A0
1
A
S0
slave address(1)
START condition
R/W
acknowledge
from slave
002aah130
8 bits (one data byte)
from port
A
acknowledge
from slave
SDA
1
no acknowledge
from master
data into
port
data from port
DATA 1
DATA 2
INT
DATA 2
DATA 1
P
STOP
condition
tv(INT)
trst(INT)
tsu(D)
12345678
SCL
9
ADDRESS
trst(INT)
A
A
View A - A
INT
Pn
tv(INT)
0.5 × VDD
0.5 × VDD
View B - B
SCL
0.5 × VDD
INT
R/W
A
trst(INT)
0.3 × VDD
0.7 × VDD
B
B



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