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ILPS28QSW Datasheet(PDF) 9 Page - STMicroelectronics

No. de pieza ILPS28QSW
Descripción Electrónicos  Dual full-scale, 1260 hPa and 4060 hPa, absolute digital output barometer with Qvar detection in a water-resistant package
PDF  52 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ILPS28QSW Datasheet(HTML) 9 Page - STMicroelectronics

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4
Communication interface characteristics
4.1
I²C - inter-IC control interface
Subject to general operating conditions for Vdd and TOP.
Table 8. I²C slave timing values
Symbol
Parameter
I²C fast mode(1)(2)
I²C fast mode plus(1)(2)
Unit
Min
Max
Min
Max
f(SCL)
SCL clock frequency
0
400
0
1000
kHz
tw(SCLL) SCL clock low time
1.3
0.5
µs
tw(SCLH) SCL clock high time
0.6
0.26
tsu(SDA)
SDA setup time
100
50
ns
th(SDA)
SDA data hold time
0
0.9
0
µs
th(ST)
START/REPEATED START condition hold time
0.6
0.26
tsu(SR)
REPEATED START condition setup time
0.6
0.26
tsu(SP)
STOP condition setup time
0.6
0.26
tw(SP:SR) Bus free time between STOP and START condition
1.3
0.5
Data valid time
0.9
0.45
Data valid acknowledge time
0.9
0.45
CB
Capacitive load for each bus line
400
550
pF
1. Data based on standard I²C protocol requirement, not tested in production.
2. Data for I²C fast mode and I²C fast mode plus have been validated by characterization, not tested in production.
Figure 4. I²C slave timing diagram
SDA
SCL
tsu(SP)
tw(SCLL)
tsu(SDA)
tsu(SR)
th(ST)
tw(SCLH)
th(SDA)
tw(SP:SR)
START
REPEATED
START
STOP
START
Note:
Measurement points are done at 0.3·VDD and 0.7·VDD for both ports.
ILPS28QSW
Communication interface characteristics
DS13905 - Rev 1
page 9/52



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