herunterladen
Document Number: MMA8452Q
Rev. 10, 04/2016
NXP Semiconductors
Data sheet: Technical data
© 2016 NXP B.V.
MMA8452Q, 3-axis, 12-bit/8-bit
digital accelerometer
The MMA8452Q is a smart, low-power, three-axis, capacitive, micromachined
accelerometer with 12 bits of resolution. This accelerometer is packed with
embedded functions with flexible user programmable options, configurable to two
interrupt pins. Embedded interrupt functions allow for overall power savings
relieving the host processor from continuously polling data.
The MMA8452Q has user selectable full scales of ±2 g/±4 g/±8 g with high-pass
filtered data as well as non-filtered data available real-time. The device can be
configured to generate inertial wakeup interrupt signals from any combination of
the configurable embedded functions allowing the MMA8452Q to monitor events
and remain in a low-power mode during periods of inactivity. The MMA8452Q is
available in a 16-pin QFN, 3 mm x 3 mm x 1 mm package.
Features
• 1.95 V to 3.6 V supply voltage
• 1.6 V to 3.6 V interface voltage
•±2 g/±4 g/±8 g dynamically selectable full-scale
• Output data rates (ODR) from 1.56 Hz to 800 Hz
• 99 μg/√Hz noise
• 12-bit and 8-bit digital output
•I
2
C
digital output interface
• Two programmable interrupt pins for six interrupt sources
• Three embedded channels of motion detection
— Freefall or motion detection: one channel
— Pulse detection: one channel
— Transient detection: one channel
• Orientation (portrait/landscape) detection with set hysteresis
• Automatic ODR change for auto-wake and return to sleep
• High-pass filter data available real-time
•Self-test
• Current consumption: 6 μA to 165 μA
Typical applications
• E-compass applications
• Static orientation detection (portrait/landscape, up/down, left/right, back/front
position identification)
• Notebook, e-reader, and laptop tumble and freefall detection
• Real-time orientation detection (virtual reality and gaming 3D user position feedback)
• Real-time activity analysis (pedometer step counting, freefall drop detection for HDD, dead-reckoning GPS backup)
• Motion detection for portable product power saving (auto-sleep and auto-wake for cell phone, PDA, GPS, gaming)
• Shock and vibration monitoring (mechatronic compensation, shipping and warranty usage logging)
• User interface (menu scrolling by orientation change, pulse detection for button replacement)
Ordering information
Part number Temperature range Package description Shipping
MMA8452QT –40°C to +85°C QFN-16 Tray
MMA8452QR1 –40°C to +85°C QFN-16 Tape and Reel
MMA8452Q
16-pin QFN
3 mm x 3 mm x 1 mm
Top and bottom view
Top view
Pin connections
1
2
3
4
59
10
11
12
13
141516
876
NC
VDD
NC
VDDIO
BYP
DNC
SCL
GND
NC
GND
INT1
GND
INT2
SA0
NC
SDA
Verzeichnis
- ・ Konfiguration des Pinbelegungsdiagramms on Seite 1 Seite 3 Seite 5 Seite 16
- ・ Abmessungen des Paketumrisses on Seite 48 Seite 49
- ・ Teilenummerierungssystem on Seite 1
- ・ Blockdiagramm on Seite 3
- ・ Typisches Anwendungsschaltbild on Seite 1
- ・ Schweißen Temperatur on Seite 47
- ・ Beschreibung der Funktionen on Seite 11
- ・ Technische Daten on Seite 1 Seite 6 Seite 9
- ・ Anwendungsbereich on Seite 22
- ・ Elektrische Spezifikation on Seite 6 Seite 7
