LPS22DF datasheet(6/54 Pages) STMICROELECTRONICS

부품명	LPS22DF

상세설명	Low-power and high-precision MEMS nano pressure sensor: 260-1260 hPa absolute digital output barometer

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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

fc(SPC)

SPI clock frequency

10(2)

MHz

tsu(CS)

CS setup time

th(CS)

CS hold time

tsu(SI)

SDI input setup time

th(SI)

SDI input hold time

tv(SO)

SDO valid output time

th(SO)

SDO output hold time

tdis(SO)

SDO output disable time

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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