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PDF LIS35DE Data sheet ( Hoja de datos )
| Número de pieza | LIS35DE | |
| Descripción | MEMS motion sensor | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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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
1 page  
LIS35DE
List of tables
Table 50.
Table 51.
Table 52.
Table 53.
Table 54.
Table 55.
Table 56.
Table 57.
Table 58.
CLICK_SRC (39h) register description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
CLICK_THSY_X (3Bh) register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
CLICK_THSY_X (3Bh) register description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
CLICK_THSZ (3Ch) register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
CLICK_THSZ (3Ch) register description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
CLICK_TimeLimit (3Dh) register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
CLICK_Latency (3Eh) register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
CLICK_Window (3Fh) register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Doc ID 15594 Rev 1
5/39
5 Page 
LIS35DE
Mechanical and electrical specifications
2.3
2.3.1
Communication interface characteristics
SPI - serial peripheral interface
Subject to general operating conditions for Vdd and Top.
Table 5. SPI slave timing values
Symbol
Parameter
Value (1)
Min.
Max.
Unit
tc(SPC)
fc(SPC)
tsu(CS)
th(CS)
tsu(SI)
th(SI)
tv(SO)
th(SO)
tdis(SO)
SPI clock cycle
SPI clock frequency
CS setup time
CS hold time
SDI input setup time
SDI input hold time
SDO valid output time
SDO output hold time
SDO output disable time
100 ns
10 MHz
5
8
5
15 ns
50
6
50
1. Values are guaranteed at 10 MHz clock frequency for SPI with both 4 and 3 wires, based on characterization results, not
tested in production
Figure 3. SPI slave timing diagram (a)
CS (3)
SPC (3)
tsu(CS)
SDI (3)
SDO (3)
tc(SPC)
tsu(SI)
th(SI)
MSB IN
tv(SO)
MSB OUT
th(SO)
th(CS)
(3)
(3)
LSB IN
(3)
tdis(SO)
LSB OUT
(3)
3. When no communication is on-going, data on CS, SPC, SDI and SDO are driven by internal pull-up
resistors
a. Measurement points are done at 0.2·Vdd_IO and 0.8·Vdd_IO, for both input and output port
Doc ID 15594 Rev 1
11/39
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet LIS35DE.PDF ] | |
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