LPS22CH datasheet(40/55 Pages) STMICROELECTRONICS

Part #	LPS22CH

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

PDF	55 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

Logo

40 / 55 page

LPS22CH

40/55

DocID033100 Rev 2

When the ODR bits are set to a value different than '000', the device is in Continuous

mode and automatically acquires a set of data (pressure and temperature) at the frequency

selected through the ODR[2:0] bits.

Once the additional low-pass filter has been enabled through the EN_LPFP bit, it is possible

to configure the device bandwidth acting on the LPFP_CFG bit. See Table 18 for low-pass

filter configurations.

The BDU bit is used to inhibit the update of the output registers until both upper and lower

(and XLOW) register parts are read. In default mode (BDU = ‘0’) the output register values

are updated continuously. If for any reason it is not sure to read faster than the output data

rate, it is recommended to set the BDU bit to ‘1’. In this way, the content of the output

registers is not updated until MSB, LSB and XLSB have been read which avoids reading

values related to different sample times.

Table 18. Low-pass filter configurations

EN_LPFP

LPFP_CFG

Additional low-pass filter status

Device bandwidth

Disabled

ODR/2

Enabled

ODR/9

Enabled

ODR/20

LPS22CH Datasheet(PDF) 40 Page - STMicroelectronics