Datasheet

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PARAMETER MEASUREMENT INFORMATION
R
L
= 1 kΩ
V
CC
C
L
= 50 pF
t
buf
t
icr
t
sth
t
sds
t
sdh
t
icf
t
icr
t
scl
t
sch
t
sts
t
PHL
t
PLH
0.3 × V
CC
Stop
Condition
t
sps
Repeat
Start
Condition
Start or
Repeat
Start
Condition
SCL
SDA
Start
Condition
(S)
Address
Bit 7
(MSB)
Data
Bit 10
(LSB)
Stop
Condition
(P)
3 Bytes for Complete Device
Programming
SDA LOAD CONFIGURATION
VOLTAGE WAVEFORMS
t
icf
Stop
Condition
(P)
t
sp
DUT
SDA
0.7 × V
CC
0.3 × V
CC
0.7 × V
CC
R/W
Bit 0
(LSB)
ACK
(A)
Data
Bit 07
(MSB)
Address
Bit 1
Address
Bit 6
BYTE DESCRIPTION
1
2, 3
I
2
C address
P-port data
PCF8575
REMOTE 16-BIT I
2
C AND SMBus I/O EXPANDER
WITH INTERRUPT OUTPUT
SCPS121D – JANUARY 2005 – REVISED APRIL 2007
Figure 6. I
2
C Interface Load Circuit and Voltage Waveforms
13
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