New Product Introduction

STMicroelectronics LPS33HW

STMicroelectronics LPS33HW – MEMS based, digital barometric pressure sensor with water resistant package

STMicroelectronics LPS33HW sensor - image

The LPS33HW is an ultra-compact piezoresistive pressure sensor which functions as a digital output barometer. The device comprises a sensing element and an IC interface which communicates through I2C or SPI from the sensing element to the application.

The sensing element, which detects absolute pressure, consists of a suspended membrane manufactured using a dedicated process developed by ST.

The LPS33HW is available in a holed ceramic LGA package. It is guaranteed to operate over a
temperature range extending from -40 °C to +85°C. The package is holed to allow external pressure to reach the sensing element.


  • Pressure sensor with water resistant package
  • 260 to 1260 hPa absolute pressure range
  • Current consumption down to 3 μA
  • High overpressure capability: 20x full scale
  • Embedded temperature compensation
  • 24-bit pressure data output
  • 16-bit temperature data output
  • ODR from 1 Hz to 75 Hz
  • SPI and I²C interfaces
  • Embedded FIFO
  • Interrupt functions: Data Ready, FIFO flags, pressure thresholds
  • Supply voltage: 1.7 to 3.6 V
  • ECOPACK® lead-free compliant


  • Wearable devices
  • Altimeter and barometer for portable devices
  • GPS applications
  • Weather station equipment

Block diagram

Block diagram image for STMicroelectronics' LPS33HW

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