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Teilenummer | LIS331HH |
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Beschreibung | MEMS digital output motion sensor | |
Hersteller | ST Microelectronics | |
Logo | ||
Gesamt 30 Seiten www.DataSheet4U.com
LIS331HH
MEMS digital output motion sensor
ultra low-power high full-scale 3-axes “nano” accelerometer
Preliminary data
Features
■ Wide supply voltage, 2.16 V to 3.6 V
■ Low voltage compatible IOs, 1.8 V
■ Ultra low-current mode consumption
down to 10 µA
■ ±6g/±12g/±24g dynamically selectable full-
scale
■ I2C/SPI digital output interface
■ 16 bit data output
■ 2 independent programmable interrupt engines
■ Sleep to wake-up function
■ 6D orientation detection
■ Embedded self-test
■ 10000 g high shock survivability
■ ECOPACK® RoHS and “Green” compliant (see
Section 8)
Applications
■ Pedometer
■ Gaming and virtual reality input devices
■ Motion activated functions
■ Impact recognition and logging
■ Intelligent power saving for handheld devices
■ Vibration monitoring and compensation
LGA16 (3x3x1 mm)
accelerometer belonging to the “nano” family, with
digital I2C/SPI serial interface standard output.
The device features ultra low-power operational
modes that allow advanced power saving and
smart sleep to wake-up functions.
The LIS331HH has dynamically user selectable
full scales of ±6g/±12g/±24g and it 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 contains 2 indipendent interrupt
engines able to recognize dedicated inertial
events.
Thresholds and timing of interrupt generators are
programmable by the end user on the fly.
The LIS331HH is available in 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.
Description
The LIS331HH is an ultra low-power high
performance high full-scale three axes linear
Table 1. Device summary
Order codes
Temperature range [° C]
LIS331HH
-40 to +85
LIS331HHTR
-40 to +85
Package
LGA16
LGA16
Packaging
Tray
Tape and reel
October 2009
Doc ID 16366 Rev 1
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
1/37
www.st.com
37
List of figures
List of figures
www.DatLaSIShe3e3t14UH.Hcom
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
SPI slave timing diagram (2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
I2C slave timing diagram (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
LIS331HH electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Read and write protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
SPI read protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Multiple bytes SPI read protocol (2 bytes example) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
SPI write protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Multiple bytes SPI write protocol (2 bytes example) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
SPI read protocol in 3-wires mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
LGA16: Mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6/37 Doc ID 16366 Rev 1
6 Page Mechanical and electrical specifications
www.DatLaSIShe3e3t14UH.Hcom
2.3.2
I2C - inter IC control interface
Subject to general operating conditions for Vdd and Top.
Table 6. I2C slave timing values
Symbol
Parameter
f(SCL)
tw(SCLL)
tw(SCLH)
tsu(SDA)
th(SDA)
SCL clock frequency
SCL clock low time
SCL clock high time
SDA setup time
SDA data hold time
tr(SDA) tr(SCL) SDA and SCL rise time
tf(SDA) tf(SCL) SDA and SCL fall time
th(ST)
tsu(SR)
tsu(SP)
tw(SP:SR)
START condition hold time
Repeated START condition
setup time
STOP condition setup time
Bus free time between STOP
and START condition
I2C standard mode (1)
Min Max
0 100
4.7
4.0
250
0 3.45
1000
300
4
I2C fast mode (1)
Min Max
0 400
1.3
0.6
100
0.01 0.9
20 + 0.1Cb (2)
20 + 0.1Cb (2)
0.6
300
300
4.7 0.6
4 0.6
4.7 1.3
Unit
KHz
µs
ns
µs
ns
µs
Figure 4. I2C slave timing diagram (3)
START
SDA
REPEATED
START
tsu(SR)
tw(SP:SR)
START
tf(SDA)
SCL
tr(SDA)
tsu(SDA)
th(SDA)
tsu(SP)
STOP
th(ST)
tw(SCLL)
tw(SCLH)
tr(SCL)
tf(SCL)
1. Data based on standard I2C protocol requirement, not tested in production
2. Cb = total capacitance of one bus line, in pF
3. Measurement points are done at 0.2·Vdd_IO and 0.8·Vdd_IO, for both port
12/37
Doc ID 16366 Rev 1
12 Page | ||
Seiten | Gesamt 30 Seiten | |
PDF Download | [ LIS331HH Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
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