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PDF ( 数据手册 , 数据表 ) LIS302DL

零件编号 LIS302DL
描述 MEMS Motion Sensor
制造商 ST Microelectronics
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LIS302DL 数据手册, 描述, 功能
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LIS302DL
MEMS motion sensor
3-axis - ±2g/±8g smart digital output “piccolo” accelerometer
Preliminary Data
Feature
2.16V to 3.6V supply voltage
1.8V compatible IOs
<1mW power consumption
±2g/±8g dynamically selectable Full-Scale
I2C/SPI digital output interface
Programmable multiple interrupt generator
Embedded high pass filter
Embedded self test
10000g high shock survivability
ECOPACK® RoHS and “Green” compliant
(see Section 8)
Description
The LIS302DL is an ultra compact low-power
three axes 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
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 LIS302DL has dynamically user selectable
full scales of ±2g/±8g and it is capable of
measuring accelerations with an output data rate
of 100Hz or 400Hz.
Order codes
LGA-14 (3x5x0.9mm)
A self-test capability allows the user to check the
functioning of the sensor in the final application.
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 completely
programmable by the end user on the fly.
The LIS302DL is available in plastic Thin Land
Grid Array package (TLGA) and it is guaranteed
to operate over an extended temperature range
from -40°C to +85°C.
The LIS302DL belongs to a family of products
suitable for a variety of applications:
– Free-Fall detection
– Motion activated functions
– Gaming and Virtual Reality input
devices
– Vibration Monitoring and Compensation
Part number
LIS302DL
LIS302DLTR
Temp range, °C
-40 to +85
-40 to +85
Package
LGA
LGA
Packing
Tray
Tape and reel
October 2006
Rev 1
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
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Mechanical and electrical specifications
LIS302DL
2.3
Note:
Absolute maximum ratings
Stresses above those listed as “absolute maximum ratings” may cause permanent damage
to the device. This is a stress rating only and functional operation of the device under these
conditions is not implied. Exposure to maximum rating conditions for extended periods may
affect device reliability.
Table 4.
Symbol
Absolute maximum ratings
Ratings
Vdd Supply voltage
Vdd_IO I/O pins Supply voltage
Input voltage on any control pin
Vin
(CS, SCL/SPC, SDA/SDI/SDO)
APOW Acceleration (Any axis, Powered, Vdd=2.5V)
AUNP Acceleration (Any axis, Unpowered)
TOP
TSTG
ESD
Operating Temperature Range
Storage Temperature Range
Electrostatic discharge protection
Supply voltage on any pin should never exceed 6.0V
Maximum Value
-0.3 to 6
-0.3 to 6
Unit
V
V
-0.3 to Vdd_IO +0.3 V
3000g for 0.5 ms
10000g for 0.1 ms
3000g for 0.5 ms
10000g for 0.1 ms
-40 to +85
-40 to +125
0 - 2 (HBM)
°C
°C
kV
This is a Mechanical Shock sensitive device, improper handling can cause permanent
damages to the part
This is an ESD sensitive device, improper handling can cause permanent damages to
the part
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LIS302DL equivalent, schematic
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Digital Interfaces
LIS302DL
Figure 6. Multiple bytes SPI Read Protocol (2 bytes example)
CS
SPC
SDI
SDO
RW
MS AD5 AD4 AD3 AD2 AD1 AD0
DO7 DO6 DO5 DO4 DO3 DO2 DO1 DO0 DO15DO14DO13DO12DO11DO10DO9 DO8
5.2.2
SPI Write
Figure 7. SPI Write protocol
CS
SPC
SDI
RW DI7 DI6 DI5 DI4 DI3 DI2 DI1 DI0
MS AD5 AD4 AD3 AD2 AD1 AD0
The SPI Write command is performed with 16 clock pulses. Multiple byte write command is
performed adding blocks of 8 clock pulses at the previous one.
bit 0: WRITE bit. The value is 0.
bit 1: MS bit. When 0 do not increment address, when 1 increment address in multiple
writing.
bit 2 -7: address AD(5:0). This is the address field of the indexed register.
bit 8-15: data DI(7:0) (write mode). This is the data that will be written inside the device
(MSb first).
bit 16-... : data DI(...-8). Further data in multiple byte writing.
Figure 8. Multiple bytes SPI Write Protocol (2 bytes example)
CS
SPC
SDI
DI7 DI6 DI5 DI4 DI3 DI2 DI1 DI0 DI15 DI14 DI13 DI12 DI11 DI10 DI9 DI8
RW
MS AD5 AD4 AD3 AD2 AD1 AD0
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