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PCA9539D Datasheet(PDF) 21 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) 21 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
21 of 31
NXP Semiconductors
PCA9539; PCA9539R
16-bit I2C-bus and SMBus low power I/O port with interrupt and reset
Fig 22. Expanded view of read input port register
Fig 23. Expanded view of write to output port register
Rise and fall times refer to VIL and VIH.
Fig 24. I2C-bus timing diagram
SCL
002aad734
21
0
A
P
70 %
30 %
SDA
input
50 %
INT
tv(INT_N)
trst(INT_N)
th(Q)
tsu(D)
SCL
002aad735
21
0
A
P
70 %
SDA
output
50 %
tv(Q)
SCL
SDA
tHD;STA
tSU;DAT
tHD;DAT
tf
tBUF
tSU;STA
tLOW
tHIGH
tVD;ACK
002aab285
tSU;STO
protocol
START
condition
(S)
bit 7
MSB
(A7)
bit 6
(A6)
bit 1
(D1)
bit 0
(D0)
1 / fSCL
tr
tVD;DAT
acknowledge
(A)
STOP
condition
(P)



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