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TCA6418EYFPR Scheda tecnica(PDF) 21 Page - Texas Instruments

Il numero della parte TCA6418EYFPR
Spiegazioni elettronici  I2C CONTROLLED 18 CHANNEL GPIO EXPANDER
PDF  31 Pages
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Produttore elettronici  TI2 [Texas Instruments]
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TCA6418EYFPR Scheda tecnica(HTML) 21 Page - Texas Instruments

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SDA LOADCONFIGURATION
VCCI
R =1k
L
W
C =50pF
(seeNote A)
L
DUT
SDA
TwoBytesforREADInputPortRegister
(seeFigure9)
VOLTAGEWAVEFORMS
1
2
BYTE
DESCRIPTION
I Caddress
2
Inputregisterportdata
SCL
SDA
Stop
Condition
(P)
Start
Condition
(S)
Address
Bit7
(MSB)
Address
Bit1
R/
Bit0
(LSB)
W
ACK
(A)
Data
Bit7
(MSB)
Data
Bit0
(LSB)
Stop
Condition
(P)
0.7 ´ VCCI
0.3 ´ VCCI
RepeatStart
Condition
Stop
Condition
0.7 ´ VCCI
0.3 ´ VCCI
tscl
tsch
tsp
ticf
ticf
ticr
tsth
ticr
tsds
tsdh
tocf
tvd(ack)
tvd
tvd
tsts
tsps
tbuf
TCA6418E
www.ti.com
SCPS243 – SEPTEMBER 2012
PARAMETER MEASUREMENT INFORMATION
A.
CL includes probe and jig capacitance. tocf is measured with CL of 10 pF or 400 pF.
B.
All inputs are supplied by generators having the following characteristics: PRR
≤ 10 MHz, ZO = 50 Ω, tr/tf ≤ 30 ns.
C.
All parameters and waveforms are not applicable to all devices.
Figure 12. I2C Interface Load Circuit and Voltage Waveforms
Copyright © 2012, Texas Instruments Incorporated
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