LPS22HH datasheet(24/59 Pages) STMICROELECTRONICS

No. de pieza	LPS22HH

Descripción Electrónicos	High-performance MEMS nano pressure sensor: 260-1260 hPa absolute digital output barometer

PDF	59 Pages

Scroll/Zoom	100%

Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

Página de inicio	http://www.st.com

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24 / 59 page

Application hints

LPS22HH

24/59

DocID030890 Rev 2

Application hints

Figure 14. LPS22HH electrical connections (top view)

The device power supply must be provided through the VDD line; a power supply

decoupling capacitor C1 (100 nF) must be placed as near as possible to the supply pads of

the device. The C1 capacitor can be tied to VDD and VDDIO, but it is recommended to use

2 capacitors, one on each VDD and VDDIO line, in case VDD are VDDIO are separate.

Depending on the application, an additional capacitor of 4.7 μF could be placed on VDD

line.

The functionality of the device and the measured data outputs are selectable and accessible

through the I²C, MIPI I3CSM, SPI interface. When using the I²C and MIPI I3CSM, CS must be

tied to Vdd_IO.

All the voltage and ground supplies must be present at the same time to have proper

behavior of the IC (refer to Figure 14). It is possible to remove VDD while maintaining

Vdd_IO without blocking the communication bus, in this condition the measurement chain is

powered off.

Note:

To guarantee proper power-off of the device, it is recommended to maintain the duration of

the VDD line to GND for at least 10 ms.

LPS22HH Datasheet(PDF) 24 Page - STMicroelectronics