•
±50 gauss magnetic dynamic range
•
±2/±4/±8/16 g selectable acceleration full scales
•
16-bit data output
•
SPI / I
2
C serial interfaces
•
Analog supply voltage 1.71 V to 3.6 V
•
Power-down mode / low-power mode
•
Current consumption in power-down: 2 μA
•
Accelerometer current consumption Magnetic sensor in power-down mode, 50 Hz ODR in low-power
mode:7.7uA
•
Programmable interrupt generators for freefall, motion detection, and magnetic field detection
•
Embedded self-test
•
Embedded temperature sensor
•
Embedded FIFO
•
ECOPACK
®
, RoHS, and “Green” compliant
7.8.2
260 hPa to 1260 hPa absolute digital output barometer (LPS22HH)
The absolute pressure-sensing device LPS22HH is an ultra-compact piezoresistive sensor that functions as a
digital output barometer.
The device comprises a sensing element and an IC interface which communicates from the sensing element
to the application through I
2
C or SPI. On the B-L462E-CELL1 Discovery kit for IoT nodes, the I2C1 bus from
STM32L462REY6TR is used.
The sensing element, which detects absolute pressure, consists of a suspended membrane manufactured using a
dedicated process developed by ST.
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.
The main features of LPS22HH are:
•
From 260 hPa to 1260 hPa absolute pressure range
•
Current consumption down to 4 μA
•
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, I
2
C, or MIPI I3CSM interfaces
•
Embedded FIFO
•
Interrupt functions: Data-Ready, FIFO flags, pressure thresholds
•
Supply voltage: from 1.7 to 3.6 V
•
High shock survivability: 22,000 g
•
Small and thin package
•
ECOPACK
®
lead-free compliant
UM2743
STMicroelectronics sensors
UM2743
-
Rev 1
page 17/58