STEVAL-MKI109V2 STMICROELECTRONICS [STMicroelectronics], STEVAL-MKI109V2 Datasheet - Page 2

• Manufacturer Part Number: STEVAL-MKI109V2
• Description: high-resolution MEMS pressure sensor
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

absolute digital
output barometer
The LPS331AP is an ultra-compact absolute
piezoresistive pressure sensor. It includes
a monolithic sensing element and an IC
interface able to take the information from
the sensing element and to provide a digital
signal to the external world.
The sensing element consists of a
suspended membrane inside a single mono-
evaluation Kit
ST’s pressure sensors are supported by an
evaluation kit that consists of a motherboard
(STEVAL-MKI109V2) and a plug-in module
that includes the LPS331AP sensor (STEVAL-
MKI120V1). Once the adapter is plugged in,
the board can be connected to a host PC
via USB so the device’s capabilities can be
easily evaluated via an intuitive graphic user
interface. For further information go to
www.st.com/mems.
device summary
Note: *software provided together with the companion chip
Order code: FLLPS331AP0912
lps331ap blocK diagram
order codes
lps331apy
lps331aptr
evaluation boards
steval-mKi109v2
steval-mKi120v1
Rs
Rs
Sensing
element
Vup
Vdown
p
Rs
Rs
Vout
Temperature
Sensor bias
sensor
MUX
Motherboard based on STM32. It features a DIL24 socket where every ST's MEMS adapter can be plugged in
Adapter board that enables fast system prototyping and LPS331AP evaluation
temperature range (°c)
The STMicroelectronics corporate logo is a registered trademark of the STMicroelectronics group of companies
Low noise
front end
silicon substrate. It is capable of detecting
pressure and is manufactured using a
specific proprietary process called VENSENS.
The VENSENS process allows a mono-
silicon membrane to be produced above
an air cavity with controlled gap and
defined pressure. The membrane is very
small compared to traditional silicon
micromachined membranes. Membrane
breakage is prevented by intrinsic
mechanical stoppers.
-40 to +85
analog
STEVAL-MKI120V1
adapter
© STMicroelectronics - September 2012 - Printed in United Kingdom - All rights reserved
current bias
Voltage and
digital filter
ADC
+
LPS331AP
For more information on ST products and solutions, visit www.st.com
compensation
description
HCLGA-16L
temperature
package
All other names are the property of their respective owners
DSP for
Test points
USB connector
The IC interface is manufactured using a
standard CMOS process. This allows a high
level of integration to design a dedicated
circuit which is trimmed to better match the
sensing element characteristics.
The LPS331AP is available in a small plastic
land grid array (HCLGA) package and is
guaranteed to operate over an extended
temperature range from -40 to +85 °C. The
package is holed to allow external pressure
to reach the sensing element.
Clock and
timing
STEVAL-MKI109V2
SPI
I ² C
Tape and reel
JTAG/SWD
STM32
microcontroller
packing
Tray
CS
SCL/SPC
SDA/SDO/SDI
SAO/SDO