LPS22DF datasheet(40/54 Pages) STMICROELECTRONICS

部件名	LPS22DF

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

PDF	54 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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40 / 54 page

9.15

RPDS_L (1Ah)

Pressure offset (LSB data)

RPDS7

RPDS6

RPDS5

RPDS4

RPDS3

RPDS2

RPDS1

RPDS0

RPDS[7:0]

This register contains the low part of the pressure offset value. Default value: 00000000

The pressure offset value is 16-bit data that can be used to implement one-point calibration (OPC) after soldering.

This value is composed of RPDS_H (1Bh) and RPDS_L (1Ah). The value is expressed as 2’s complement.

The customer can perform a one-point calibration after soldering (recommended) and the offset coefficient can be

stored for OPC in register RPDS (1Ah, 1Bh). These stored offset values are directly added to the compensated

pressure data in the block diagram below. To give better flexibility to the user, the OPC value can be written twice

in the same register map. For further details, refer to the application note.

Figure 24. One-point calibration

9.16

RPDS_H (1Bh)

Pressure offset (MSB data)

RPDS15

RPDS14

RPDS13

RPDS12

RPDS11

RPDS10

RPDS9

RPDS8

RPDS[15:8]

This register contains the high part of the pressure offset value. Default value: 00000000

LPS22DF

RPDS_L (1Ah)

DS13316 - Rev 1

page 40/54

LPS22DF 数据表(PDF) 40 Page - STMicroelectronics

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