ILPS22QSTR datasheet(9/57 Pages) STMICROELECTRONICS

Part #	ILPS22QSTR

Description	Dual full-scale, 1260 hPa and 4060 hPa, absolute digital output barometer with embedded Qvar electrostatic sensor

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Manufacturer	STMICROELECTRONICS [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

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 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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