IIS328DQ accelerometer Datasheet

IIS328DQ Datasheet, PDF, Equivalent


Part Number

IIS328DQ

Description

High-performance ultra-low-power 3-axis accelerometer

Manufacture

STMicroelectronics

Total Page 30 Pages
Datasheet
Download IIS328DQ Datasheet


IIS328DQ
IIS328DQ
High-performance ultra-low-power 3-axis accelerometer with digital
output for industrial applications
Datasheet - production data
Platform/antenna stabilization
Tilt/inclination measurements
Motion-activated functions
Intelligent power saving
QFN 24 (4 x 4 x 1.8 mm3)
Description
Features
Wide supply voltage range: 2.16 V to 3.6 V
Low voltage compatible IOs: 1.8 V
Ultra-low power consumption: down to 10 μA
 2g/±4g/8g dynamically selectable full-scale
SPI / I2C digital output interface
16-bit data output
2 independent programmable interrupt
generators
System sleep/wakeup function
Extended temperature range: -40 °C to 105 °C
Embedded self-test
High shock survivability: up to 10000 g
ECOPACK®, RoHS and “Green” compliant
Applications
Anti-tampering devices
The IIS328DQ is an ultra-low-power high-
performance 3-axis linear accelerometer with a
digital serial interface, SPI or I2C compatible.
Recommended for industrial applications
requiring an extended temperature range and
long lifespan, the device features ultra-low-power
operational modes that allow advanced power
saving and smart sleep-to-wakeup functions. The
IIS328DQ has dynamic user-selectable full-scales
of ±2g/±4g/±8g and is capable of measuring
accelerations with output data rates from 0.5 Hz
to 1 kHz. The self-test capability allows the user to
check the functioning of the sensor in the final
application. The device may be configured to
generate an interrupt signal through inertial
wakeup events, or by the position of the device
itself. Interrupt generators are programmable by
the end user on-the-fly. Available in a small, quad,
flat pack no-lead package (QFPN) with a 4x4 mm
footprint, the IIS328DQ corresponds to the trend
towards application miniaturization, and is
guaranteed to operate over a temperature range
from -40 °C to +105 °C.
Impact recognition and logging
Vibration monitoring and compensation
Robotics
Table 1. Device summary
Order codes
Temperature range [C]
Package
Packaging
IIS328DQ
IIS328DQTR
-40 to +105
-40 to +105
QFPN 4x4x1.8 24L
QFPN 4x4x1.8 24L
Tray
Tape and reel
April 2015
This is information on a product in full production.
DocID027250 Rev 3
1/40
www.st.com

IIS328DQ
Contents
Contents
IIS328DQ
1 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Mechanical and electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Mechanical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Communication interface characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3.1
2.3.2
SPI - serial peripheral interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
I²C - inter IC control interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.4 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.5 Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.5.1 Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.5.2 Zero-g level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.5.3 Self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.5.4 Sleep-to-wakeup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3 Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1 Sensing element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.2 IC interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.3 Factory calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5 Digital interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.1 I²C serial interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.1.1 I²C operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.2 SPI bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.2.1 SPI read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.2.2 SPI write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.2.3 SPI read in 3-wire mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6 Register mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
2/40 DocID027250 Rev 3


Features IIS328DQ High-performance ultra-low-pow er 3-axis accelerometer with digital ou tput for industrial applications Datash eet - production data  Platform/ante nna stabilization  Tilt/inclination measurements  Motion-activated funct ions  Intelligent power saving QFN 24 (4 x 4 x 1.8 mm3) Description Feat ures  Wide supply voltage range: 2.1 6 V to 3.6 V  Low voltage compatible IOs: 1.8 V  Ultra-low power consump tion: down to 10 μA  2g/±4g/ 8g dynamically selectable full-scale SPI / I2C digital output interface 16-bit data output  2 independent programmable interrupt generators  S ystem sleep/wakeup function  Extende d temperature range: -40 °C to 105 °C  Embedded self-test  High shock survivability: up to 10000 g  ECOPAC K®, RoHS and “Green” compliant App lications  Anti-tampering devices T he IIS328DQ is an ultra-low-power highp erformance 3-axis linear accelerometer with a digital serial interface, SPI or I2C compatible. Recommended for industrial applications requiring an e.
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