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PCA9535PW Datasheet(PDF) 20 Page - NXP Semiconductors

Part # PCA9535PW
Description  16-bit I2C-bus and SMBus, low power I/O port with interrupt
PDF  32 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCA9535PW Datasheet(HTML) 20 Page - NXP Semiconductors

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PCA9535_PCA9535C_3
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 03 — 4 October 2007
20 of 32
NXP Semiconductors
PCA9535; PCA9535C
16-bit I2C-bus and SMBus, low power I/O port with interrupt
Fig 20. Definition of timing on the I2C-bus
tSP
tBUF
tHD;STA
P
P
S
tLOW
tr
tHD;DAT
tf
tHIGH
tSU;DAT
tSU;STA
Sr
tHD;STA
tSU;STO
SDA
SCL
002aaa986
Rise and fall times refer to VIL and VIH.
Fig 21. I2C-bus timing diagram
SCL
SDA
tHD;STA
tSU;DAT
tHD;DAT
tf
tBUF
tSU;STA
tLOW
tHIGH
tVD;ACK
002aab175
tSU;STO
protocol
START
condition
(S)
bit 7
MSB
(A7)
bit 6
(A6)
bit 0
(R/W)
acknowledge
(A)
STOP
condition
(P)
1/fSCL
tr
tVD;DAT
Fig 22. tv(Q) timing
tv(Q)
SCL
002aad327
IOn
tv(Q)
SCL
IOn



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