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PCA9539D Datasheet(PDF) 16 Page - NXP Semiconductors

Part # PCA9539D
Description  16-bit I2C-bus and SMBus low power I/O port with interrupt and reset
PDF  31 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCA9539D Datasheet(HTML) 16 Page - NXP Semiconductors

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PCA9539_PCA9539R_5
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 05 — 28 July 2008
16 of 31
NXP Semiconductors
PCA9539; PCA9539R
16-bit I2C-bus and SMBus low power I/O port with interrupt and reset
8.
Application design-in information
Device address configured as 1110 100X for this example.
IO0_0, IO0_2, IO0_3 configured as outputs.
IO0_1, IO0_4, IO0_5 configured as inputs.
IO0_6, IO0_7 and (IO1_0 to IO1_7) configured as inputs.
Fig 16. Typical application
PCA9539
IO0_0
IO0_1
SCL
SDA
VDD
(5 V)
MASTER
CONTROLLER
SCL
SDA
INT
IO0_2
VDD
A1
A0
VDD
VSS
INT
10 k
Ω
SUB-SYSTEM 1
(e.g., temp sensor)
IO0_3
INT
SUB-SYSTEM 2
(e.g., counter)
RESET
controlled
switch
(e.g., CBT device)
VDD
A
B
enable
SUB-SYSTEM 3
(e.g., alarm system)
ALARM
IO0_4
IO0_5
IO0_6
10 DIGIT
NUMERIC
KEYPAD
VSS
002aad730
10 k
Ω
10 k
Ω
2 k
Ω
100 k
Ω
(
×3)
IO0_7
IO1_0
IO1_1
IO1_2
IO1_3
IO1_4
IO1_5
IO1_6
IO1_7
RESET
RESET
10 k
Ω



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