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LIS35DE 반도체 회로 부품 판매점

MEMS motion sensor



STMicroelectronics 로고
STMicroelectronics
LIS35DE 데이터시트, 핀배열, 회로
LIS35DE
MEMS motion sensor
3-axis - ±2g/±8g smart digital output “piccolo” accelerometer
Feature
2.16 V to 3.6 V supply voltage
1.8V compatible IOs
< 1 mW power consumption
±2g/±8g dynamically selectable full-scale
I2C/SPI digital output interface
Programmable multiple interrupt generator
Click and double click recognition
Embedded high pass filter
10000g high shock survivability
ECOPACK® RoHS and “Green” compliant
(see Section 8)
Applications
Free-fall detection
Motion activated functions
Gaming and virtual reality input devices
Vibration monitoring and compensation
Description
The LIS35DE is an ultra compact low-power three
axis linear accelerometer. It includes a sensing
element and an IC interface able to provide the
measured acceleration to the external world
through I2C/SPI serial interface.
The sensing element, capable of detecting the
acceleration, is manufactured using a dedicated
LGA14 (3x5x0.9mm)
process developed by ST to produce inertial
sensors and actuators in silicon.
The IC interface is manufactured using a CMOS
process that allows to design a dedicated circuit
which is trimmed to better match the sensing
element characteristics.
The LIS35DE has dynamically user selectable full
scales of ±2g/±8g and it is capable of measuring
accelerations with an output data rate of 100 Hz
or 400 Hz.
The device may be configured to generate inertial
wake-up/free-fall interrupt signals when a
programmable acceleration threshold is crossed
at least in one of the three axes. Thresholds and
timing of interrupt generators are programmable
by the end user on the fly.
The LIS35DE is available in plastic Thin Land
Grid Array package (TGA) and it is designed to
operate over an extended temperature range from
-40°C to +85°C.
Table 1. Device summary
Order code
Temp range, ° C
LIS35DE
-40 to +85
LIS35DETR
-40 to +85
Package
LGA14
LGA14
Packing
Tray
Tape and reel
April 2009
Doc ID 15594 Rev 1
1/39
www.st.com
39


LIS35DE 데이터시트, 핀배열, 회로
Contents
Contents
LIS35DE
1 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Mechanical and electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Mechanical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Communication interface characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3.1 SPI - serial peripheral interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.3.2 I2C - Inter IC Control Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.4 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.5 Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.5.1 Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.5.2 Zero-g level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.5.3 Click and double click recognition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3 Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Sensing element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2 IC interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.3 Factory calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.1 Soldering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5 Digital interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.1 I2C serial interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.1.1 I2C operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.2 SPI bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.2.1 SPI read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.2.2 SPI write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.2.3 SPI read in 3-wires mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6 Register mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2/39 Doc ID 15594 Rev 1




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LIS35DE sensor

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MEMS motion sensor - STMicroelectronics