MPL3150A2ST1 datasheet(13/46 Pages) NXP

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NXP Semiconductors

MPL3150A2S

I2C precision pressure sensor

13.3 Temperature function

The unit contains a high-resolution temperature sensor that provides data to the user via a 16-bit data register,

as well as for internal compensation of the pressure sensor.

13.4 Autonomous data acquisition

The unit can be programmed to periodically capture pressure and temperature data. Up to 32 data acquisitions

can be stored in the internal FIFO. The interval between acquisitions is programmable from one second to nine

hours.

Data collection capabilities: (up to 32 samples over 12 days). The unit can also be programmed to make a

single reading and then go to standby mode.

13.5 FIFO

A 32-sample FIFO is incorporated to minimize the overhead of collecting multiple data samples. The FIFO

stores both temperature and pressure data. The device can be programmed to autonomously collect data at

programmed intervals and store the data in the FIFO. FIFO interrupts can be triggered by watermark full or data

contention (FIFO GATE) events.

13.6 External interrupts

Two independent interrupt out pins are provided. The configuration of the pins is programmable (polarity, open-

drain, or push/pull.) Any one of the internal interrupt sources can be routed to either pin.

13.6.1 Reach target threshold pressure (SRC_PTH)

The interrupt flag is set on reaching the value stored in the pressure target register. Additionally, a window value

provides the ability to signal when the target is nearing the value in the pressure target register from either

above or below.

Example:

• Set pressure alert to 100.0 kPa and window value to 5 kPa, interrupt can be sent passing 95 kPa, 100 kPa,

and 105 kPa.

Note: When the window value is set to 0, then the interrupt will only be generated when reaching or crossing

the target value.

13.6.2 Reach window target pressure (SRC_PW)

The interrupt flag is set when the pressure value is within the window defined by the following formula:

Note: If the P_WND value is set to 0, no interrupt is generated.

13.6.3 Reach target threshold temperature (SRC_TTH)

Interrupt flag is set on reaching the value stored in the temperature target register. Additionally a window value

provides ability to signal when the target is nearing from either above or below the value in the temperature

target register.

Note: When the window value is set to 0, then the interrupt will only be generated when reaching or crossing

the target value.

MPL3150A2S

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 1.3 — 8 May 2023

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