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| TCA6408A-Q1 Datasheet, PDF (11/40 Pages) Texas Instruments – Low-Voltage 8-Bit I2C and SMBus I/O Expander With Interrupt Output | |||
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www.ti.com
7 Parameter Measurement Information
VCCI
SDA
DUT
RL = 1 kW
CL = 50 pF
(see Note A)
SDA LOAD CONFIGURATION
TCA6408A-Q1
SCPS234 â SEPTEMBER 2016
Two Bytes for READ Input Port Register
Stop
Start
Condition Condition
(P)
(S)
Address
Bit 7
(MSB)
SCL
SDA
tscl
tsch
ticr
tbuf
ticf
ticf
ticr
tsth
tsds
Address
Bit 1
R/W
Bit 0
(LSB)
ACK
(A)
Data
Bit 7
(MSB)
tsp
tvd
tocf
tvd
tsdh
tvd(ack)
VOLTAGE WAVEFORMS
Repeat Start
Condition
Stop
Condition
Data
Bit 0
(LSB)
Stop
Condition
(P)
tsts
tsps
0.7 ´ VCCI
0.3 ´ VCCI
0.7 ´ VCCI
0.3 ´ VCCI
BYTE
1
2
DESCRIPTION
I2C address
Input register port data
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 â¦, tr/tf ⤠30 ns.
Figure 17. I2C Interface Load Circuit and Voltage Waveforms
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: TCA6408A-Q1
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