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ILPS22QSTR Fiches technique(PDF) 9 Page - STMicroelectronics

No de pièce ILPS22QSTR
Description  Dual full-scale, 1260 hPa and 4060 hPa, absolute digital output barometer with embedded Qvar electrostatic sensor
PDF  57 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ILPS22QSTR Fiches technique(HTML) 9 Page - STMicroelectronics

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3.3
Communication interface characteristics
3.3.1
SPI - serial peripheral interface
Subject to general operating conditions for Vdd and TOP.
Table 8. SPI slave timing values
Symbol
Parameter
Value(1)
Unit
Min
Max
tc(SPC)
SPI clock cycle
100
ns
fc(SPC)
SPI clock frequency
10(2)
MHz
tsu(CS)
CS setup time
6
ns
th(CS)
CS hold time
8
tsu(SI)
SDI input setup time
5
th(SI)
SDI input hold time
15
tv(SO)
SDO valid output time
50
th(SO)
SDO output hold time
9
tdis(SO)
SDO output disable time
50
1. Values are evaluated at 10 MHz clock frequency for SPI with 3 wires, based on characterization results, not tested in
production.
2. Recommended to set max SPI clock 8 MHz to ≤50 Hz ODR.
Figure 4. SPI slave timing diagram
Note:
Measurement points are done at 0.3·Vdd_IO and 0.7·Vdd_IO for both ports.
ILPS22QS
Communication interface characteristics
DS13431 - Rev 3
page 9/57



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