UM2153 datasheet(26/57 Pages) STMICROELECTRONICS

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Hardware layout and configuration

UM2153

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DocID030118 Rev 3

The LIS3MDL includes an I2C serial bus interface, that supports standard and fast mode

(100 kHz and 400 kHz), and an SPI serial standard interface. On the STM32L4 Discovery

kit IoT node, the I2C2 bus from STM32L475VG is used.

The LIS3MDL is available in a small thin plastic land grid array package (LGA-12

(2.0x2.0x1.0 mm)) and is guaranteed to operate over an extended temperature range of -40

°C to +85 °C.

LIS3MDL is also ECOPACK®, RoHS and “Green” compliant.

7.12.4

3D accelerometer and 3D gyroscope (LSM6DSL)

The LSM6DSL is a system-in-package featuring a 3D digital accelerometer and a 3D digital

gyroscope performing at 0.65 mA in high-performance mode and enabling always-on

low-power features for an optimal motion experience for the consumer.

The event-detection interrupts enable efficient and reliable motion tracking and contextual

awareness, implementing hardware recognition of free-fall events, 6D orientation, click and

double-click sensing, activity or inactivity, and wake-up events.

The LSM6DSL supports main OS requirements, offering real, virtual and batch sensors with

4 Kbytes for dynamic data batching.

The LSM6DSL has been designed to implement features such as significant motion, tilt,

pedometer functions, step detector and step counter, time stamping and to support the data

acquisition of an external magnetometer with ironing correction (hard, soft).

The LSM6DSL has a full-scale acceleration range of ±2/±4/±8/±16 g and an angular rate

range of ±125/±245/±500/±1000/±2000 dps.

The registers embedded inside the LSM6DSL may be accessed through both the I2C and

SPI serial interfaces. On the STM32L4 Discovery kit for IoT node, the I2C2 bus from

STM32L475VGT6 is used.

The LSM6DSL is available in a plastic land grid array (LGA-14L (2.5x3x0.83mm)) package,

ECOPACK®, RoHS and “Green” compliant.

7.12.5

260-1260 hPa absolute digital output barometer (LPS22HB)

The absolute pressure-sensing device LPS22HB is an ultra-compact piezoresistive sensor

which 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 I2C or SPI. On the STM32L4 Discovery kit for

IoT node the I2C2 bus from the STM32L475VG is used.

The sensing element, which detects absolute pressure, consists of a suspended membrane

manufactured using a dedicated process developed by ST.

The LPS22HB 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.

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