LPS22HH
59Pages

Catalog excerpts

LPS22HHHigh-performance MEMS nano pressure sensor: 260-1260 hPa absolute digital output barometer Datasheet - production data Features • 260 to 1260 hPa absolute pressure range • Current consumption down to 4 pA • Absolute pressure accuracy: 0.5 hPa • Low pressure sensor noise: 0.65 Pa • High-performance TCO: 0.65 Pa/°C • Embedded temperature compensation • 24-bit pressure data output • ODR from 1 Hz to 200 Hz • SPI, I2C or MIPI I3Csm interfaces • Embedded FIFO • Interrupt functions: Data-Ready, FIFO flags, pressure thresholds • Supply voltage: 1.7 to 3.6 V • High shock survivability: 22,000 g • Small and thin package • ECOPACK® lead-free compliant Applications • Altimeters and barometers for portable devices • GPS applications • Weather station equipment • Sport watches • e-cigarettes • Drones • Gas metering Description The LPS22HH is an ultra-compact piezoresistive absolute pressure sensor which functions as a digital output barometer. The device comprises a sensing element and an IC interface which communicates through FC, MIPI I3Csm 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 LPS22HH is available in a full-mold, holed LGA package (HLGA). 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. Table 1. Device summary This is information on a product in full production.

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Mechanical and electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . 9 3.1 Communication interface characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 11 3.3.1 3.3.2 SPI - serial peripheral interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 I²C - inter-IC control interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Interpreting pressure readings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

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I²C serial interface (CS = high) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 7.2.1 SPI read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 SPI read in 3-wire mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 MIPI I3CSM slave interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 7.4.1 MIPI I3CSM CCC supported commands . . . . . . . . . . . . . . . . . . . . . . . . 33

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HLGA-10L package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 HLGA-10L packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

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List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Table 13. Table 14. Table 15. Table 16. Table 17. Table 18. Table 19. Table 20. Table 21. Table 22. Table 23. Table 24. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Pressure and temperature sensor characteristics . . . . . . . . . . . . . . . . ....

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List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29. Device architecture block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Digital logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Pin...

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Sensor Bias

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LPS22HH Mechanical and electrical specifications Table 3. Pressure and temperature sensor characteristics

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Mechanical and electrical specifications LPS22HH 1. Typical specifications are not guaranteed. 2. By design, the typ. value is defined based characterization data with 10 hPa pressure interval. 3. Pressure noise RMS evaluated in a controlled environment, based on the average standard deviation of 50 measurements with LOW_NOISE_EN = 1, EN_LPFP = 1, LPFP_CFG = 1. 4. Output data rate is configured acting on ODR[2:0] in CTRL_REG1 (10h). 5. Typ. value is defined considering a 5-year life cycle of the final application. 3.2 Electrical characteristics VDD = 1.8 V, T = 25 °C, unless otherwise...

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Mechanical and electrical specifications Communication interface characteristics SPI - serial peripheral interface Subject to general operating conditions for Vdd and TOP. Table 6. SPI slave timing values Value(1) Symbol SDI input setup time SDI input hold time SDO valid output time SDO output hold time SDO output disable time 1. Values are guaranteed at 10 MHz clock frequency for SPI with both 4 and 3 wires, based on characterization results, not tested in production. 2. Recommended to set max SPI clock 8 MHz to ≤50 Hz ODR. Figure 4. SPI slave timing diagram Measurement points are done at...

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Mechanical and electrical specifications I²C - inter-IC control interface Subject to general operating conditions for Vdd and TOP. Table 7. I²C slave timing values Symbol f(SCL) Parameter (1) SCL clock frequency SCL clock high time SDA data hold time START condition hold time Repeated START condition setup time STOP condition setup time Bus free time between STOP and START condition 1. Data based on standard I²C protocol requirement, not tested in production. Figure 5. I²C slave timing diagram Measurement points are done at 0.2·Vdd_IO and 0.8·Vdd_IO, for both ports.

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