The high performance delivered at low power consumption, the digital output, and the embedded digital features,
such as FIFO and the interrupts, enable features for battery-operated industrial wireless sensor nodes.
The IIS3DWB has a selectable full-scale acceleration range of ±2/±4/±8/±16 g and is capable of measuring
accelerations with a bandwidth up to 6 kHz with an output data rate of 26.7 kHz.
The device integrates a 3 kB first-in, first-out (FIFO) buf
fer to avoid any data loss and to limit intervention of the
host processor.
The ST MEMS sensor module family leverages the robust and mature manufacturing processes already used for
the production of micromachined accelerometers and gyroscopes to serve automotive, industrial, and consumer
markets. The sensing elements are manufactured using the ST proprietary micromachining process, whereas the
embedded IC interfaces are developed using CMOS technology.
The IIS3DWB has a self-test capability, which allows checking whether the sensor is correctly working in the final
application.
The IIS3DWB is available in a 14-lead plastic land grid array (LGA) package and is guaranteed to operate over an
extended temperature range from -40°C to +105°C.
Table 4. IIS3DWB I/O configuration
I/O Configuration
PI1 SPI2_CLK
PI3 SPI2_MOSI
PD3 SPI2_MISO
PF12 SPI_CS
PF15 INT1
- INT2
1.6.1.6 IIS2DLPC
The IIS2DLPC is a three-axis linear accelerometer with digital I²C/SPI output interface.
It has full scales of ±2g/±4g/±8g/±16g selectable by the user and can measure accelerations with output data
rates from 1.6 Hz to 1600 Hz.
The IIS2DLPC has a high-performance mode and four low-power modes, which can be changed on-the-fly
,
providing outstanding versatility and adaptability to the requirements of the application.
The accelerometer has an integrated 32-level first-in, first-out (FIFO) buffer that allows the user to store data in
order to limit intervention by the host processor. The embedded self-test capability allows checking whether the
sensor is correctly working in the final application.
The IIS2DLPC has a dedicated internal engine to process motion and acceleration detection, including free-fall,
wake-up, highly configurable single/double-tap recognition, activity/inactivity, stationary/motion detection, portrait/
landscape detection, and 6D/4D orientation.
The IIS2DLPC is available in a small thin plastic land grid array package (LGA) and it is guaranteed to operate
over an extended temperature range from -40°C to +85°C.
Table 5. IIS2DLPC I/O configuration
I/O Configuration
PI1 SPI2_CLK
PI3 SPI2_MOSI
PD3 SPI2_MISO
PH6 SPI_CS
PF1 INT1
PF2 INT2
UM2965
Functional blocks
UM2965 - Rev 1
page 9/58
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