Datasheet

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
TCA6424
www.ti.com SCPS175A –NOVEMBER 2007–REVISED NOVEMBER 2009
PARAMETER MEASUREMENT INFORMATION
A. C
L
includes probe and jig capacitance. tocf is measured with C
L
of 10 pF or 400 pF.
B. All inputs are supplied by generators having the following characteristics: PRR ≤ 10 MHz, Z
O
= 50 Ω, t
r
/t
f
≤ 30 ns.
C. All parameters and waveforms are not applicable to all devices.
Figure 10. I
2
C Interface Load Circuit and Voltage Waveforms
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