Datasheet

PARAMETERMEASUREMENTINFORMATION
SDA LOADCONFIGURATION
V
CCI
R =1k
L
W
C =50pF
(seeNote A)
L
DUT
SDA
TwoBytesforREADInputPortRegister
(seeFigure9)
VOLTAGEWAVEFORMS
1
2
BYTE
DESCRIPTION
I Caddress
2
Inputregisterportdata
SCL
SDA
Stop
Condition
(P)
Start
Condition
(S)
Address
Bit7
(MSB)
Address
Bit1
R/
Bit0
(LSB)
W
ACK
(A)
Data
Bit7
(MSB)
Data
Bit0
(LSB)
Stop
Condition
(P)
0.7 ´ V
CCI
0.3 ´ V
CCI
RepeatStart
Condition
Stop
Condition
0.7 ´ V
CCI
0.3 ´ V
CCI
t
scl
t
sch
t
sp
t
icf
t
icf
t
icr
t
sth
t
icr
t
sds
t
sdh
t
ocf
t
vd(ack)
t
vd
t
vd
t
sts
t
sps
t
buf
TCA6408A
SCPS192CAPRIL2009REVISEDJULY2009.............................................................................................................................................................
www.ti.com
A.C
L
includesprobeandjigcapacitance.tocfismeasuredwithC
L
of10pFor400pF.
B.Allinputsaresuppliedbygeneratorshavingthefollowingcharacteristics:PRR10MHz,Z
O
=50,t
r
/t
f
30ns.
C.Allparametersandwaveformsarenotapplicabletoalldevices.
Figure10.I
2
CInterfaceLoadCircuitandVoltageWaveforms
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