LPS25HBTR STMicroelectronics

LPS25HB MEMS pressure sensor: 260-1260 hPa absolute digital output barometer Datasheet - production data Applications Altimeter and barometer for portable devices Enhanced GPS applications Weather station equipment Wearable devices HLGA-10L (2.5 x 2.5 x 0.76 mm typ.) Description The LPS25HB is a piezoresistive absolute pressure sensor which functions as a digital Features output barometer. The device comprises a 260 to 1260 hPa absolute pressure range sensing element and an IC interface which 2 communicates through I C or SPI from the High-resolution mode: 0.01 hPa RMS sensing element to the application. Low power consumption The sensing element, which detects absolute Low-resolution mode: 4 A pressure, consists of a suspended membrane Low current & noise mode with FIFO: manufactured using a dedicated process 4.5 A developed by ST. High overpressure capability: 20x full scale The LPS25HB is available in a full-mold, holed Embedded temperature compensation LGA package (HLGA). It is guaranteed to operate 24-bit pressure data output over a temperature range extending from -30 to +105 C. The package is holed to allow external ODR from 1 Hz to 25 Hz pressure to reach the sensing element. 2 SPI and I C interfaces Embedded FIFO Interrupt functions: Data Ready, FIFO flags, pressure thresholds Supply voltage: 1.7 to 3.6 V High shock survivability: 10,000 g ECOPACK lead-free compliant Table 1. Device summary Order code Temperature range C Package Packing LPS25HBTR -30 to +105 C HLGA-10L Tape and reel August 2016 DocID027112 Rev 4 1/50 This is information on a product in full production. www.st.comContents LPS25HB Contents 1 Block diagram and pin description . 7 2 Mechanical and electrical specifications 9 2.1 Mechanical characteristics . 9 2.2 Electrical characteristics 10 2.3 Communication interface characteristics . 11 2.3.1 SPI - serial peripheral interface . 11 2 2.3.2 I C - inter-IC control interface 12 2.4 Absolute maximum ratings 13 3 Functionality 14 3.1 Sensing element 14 2 3.2 I C interface . 14 3.3 Factory calibration 14 3.4 How to interpret pressure readings . 15 4 FIFO . 16 4.1 Bypass mode 16 4.2 FIFO mode 17 4.3 Stream mode 18 4.4 Stream-to-FIFO mode . 19 4.5 Bypass-to-Stream mode 20 4.6 FIFO Mean mode . 20 4.7 Bypass-to-FIFO mode . 21 4.8 Retrieving data from FIFO 21 5 Application hints . 22 5.1 Soldering information 23 6 Digital interfaces . 24 2 6.1 I C serial interface 24 2 6.2 I C serial interface (CS = High) 24 2 6.2.1 I C operation . 25 2/50 DocID027112 Rev 4