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It is a miniature version of the MS5534C barometer/alti-meter module and provides a 16 Bit data word from a pressure and temperature dependent voltage.  MS5540C is a low power, low voltage device with  automatic  power  down (ON/OFF) switching. A 3-wire interface is used for all communications with a micro controller. Compared to MS5534A the pressure range (measurement down to 10 mbar) has been improved. The MS5540C is fully software compatible to the MS5534C and previous versions of MS5540. In addition, the MS5540C is from its outer dimensions compatible to the MS54XX series of pressure sensors. Compared to the previous version the ESD sensitivity level has been improved to 4kV on all pins. The gel protection of the sensor provides a water protection sufficient for 100 m waterproof watches without any additional protection. 


  • 10 - 1100 mbar absolute pressure range
  • 6 coefficients for software compensation stored on-chip
  • Piezoresistive silicon micromachined sensor
  • Integrated miniature pressure sensor 6.2 x 6.4 mm
  • 16 Bit ADC
  • 3-wire serial interface 
  • 1 system clock line (32.768 kHz)
  • Low voltage and low power consumption 
  • Resolution 0.1 mbar
  • Supply voltage 2.2 V to 3.6 V
  • Low supply current < 5 µA
  • Standby current < 0.1 µA
  • -40°C to +85°C operation temperature
  •  No external components required 


Please review product documents or contact us for the latest agency approval information.  

Product Type Features

  • Sensor Type  Digital Pressure and Altimeter Sensor Modules

  • Type  Absolute

Electrical Characteristics

  • Supply Voltage (V) 2.2 – 3.6


  • Dimensions  6.2 x 6.4 mm [ .24 x .25 in ]

Usage Conditions

  • Operating Temperature Range (°C) -40 – 85, -40 – 85

  • Operating Temperature Range (°F) -40 – 185, -40 – 185


  • Output Interface  3-wire SPI

  • Overpressure  10 bar

  • Output/Span  16 bit ADC

  • Accuracy  ±1.5mbar

  • Resolution  .1

Packaging Features

  • Package  Surface Mountable


  • Options  Plastic Cap, White Gel, White Gel with High Endurance

Related Materials

CAD Files

Datasheets & Catalog Pages

Terms and Conditions

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This information has been provided to your free of charge for your use but remains the sole property of TE Connectivity Corporation (''TE'') or SnapEDA,  Inc. or Ultra Librarian/EMA Design Automation, Inc. (collectively, "Company"). While Company has used reasonable efforts to ensure its accuracy, Company does not guarantee that it is error-free, not makes any other representation, warranty, or guarantee that the information is completely accurate or up-to-date. In many cases, the CAD data has been simplified to remove proprietary detail while maintaining critical interface geometric detail for use by customers. Company expressly disclaims all implied warranties regarding this information, including but not limited to any implied warranties or merchantability or fitness for a particular purpose.