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LPS22DF Datasheet(PDF) 6 Page - STMicroelectronics

No. de pieza LPS22DF
Descripción Electrónicos  Low-power and high-precision MEMS nano pressure sensor: 260-1260 hPa absolute digital output barometer
PDF  54 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
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LPS22DF Datasheet(HTML) 6 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 5. 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 both 4 and 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.
LPS22DF
Communication interface characteristics
DS13316 - Rev 1
page 6/54



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