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PCA9555AHF Datasheet(PDF) 3 Page - NXP Semiconductors

Part # PCA9555AHF
Description  Low-voltage 16-bit I2C-bus I/O port with interrupt and weak pull-up
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCA9555AHF Datasheet(HTML) 3 Page - NXP Semiconductors

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PCA9555A
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 1 — 11 September 2012
3 of 39
NXP Semiconductors
PCA9555A
Low-voltage 16-bit I2C-bus I/O port with interrupt and weak pull-up
4.
Block diagram
5.
Pinning information
5.1 Pinning
Remark: All I/Os are set to inputs at reset.
Fig 1.
Block diagram of PCA9555A
PCA9555A
POWER-ON
RESET
002aaf807
I2C-BUS/SMBus
CONTROL
INPUT
FILTER
SCL
SDA
VDD
INPUT/
OUTPUT
PORTS
P0_0
VSS
8-bit
write pulse
read pulse
P0_2
P0_1
P0_3
P0_4
P0_5
P0_6
P0_7
INPUT/
OUTPUT
PORTS
P1_0
8-bit
write pulse
read pulse
P1_2
P1_1
P1_3
P1_4
P1_5
P1_6
P1_7
A1
A0
LP
FILTER
VDD
INT
A2
Fig 2.
Pin configuration for TSSOP24
Fig 3.
Pin configuration for HWQFN24
PCA9555APW
INT
VDD
A1
SDA
A2
SCL
P0_0
A0
P0_1
P1_7
P0_2
P1_6
P0_3
P1_5
P0_4
P1_4
P0_5
P1_3
P0_6
P1_2
P0_7
P1_1
VSS
P1_0
002aaf805
1
2
3
4
5
6
7
8
9
10
11
12
14
13
16
15
18
17
20
19
22
21
24
23
002aaf806
PCA9555AHF
Transparent top view
P1_3
P0_4
P0_5
P1_4
P0_3
P1_5
P0_2
P1_6
P0_1
P1_7
P0_0
A0
terminal 1
index area
6
13
5
14
4
15
3
16
2
17
1
18


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