FXLS8471Q Datasheet, PDF (1/75 Pages) Freescale Semiconductor, Inc – Linear Accelerometer

Freescale Semiconductor
Data Sheet: Technical Data
An Energy-Efficient Solution by Freescale
Document Number: FXLS8471Q
Rev. 1.5, 06/2015
FXLS8471Q, 3-Axis,
Linear Accelerometer
FXLS8471Q
FXLS8471Q is a small, low-power, 3-axis, linear accelerometer in a
3 mm x 3 mm x 1 mm QFN package. FXLS8471Q has dynamically selectable
acceleration full-scale ranges of ±2 g/±4 g/±8 g and 14 bits of resolution.
Output data rates (ODR) are programmable from 1.563 Hz to 800 Hz. I²C and
SPI serial digital interfaces are provided along with several user
programmable event detection functions that can be used to reduce the overall
system power consumption by off-loading the host processor. FXLS8471Q is
guaranteed to operate over the extended temperature range of -40 °C to
+85 °C.
FXLS8471Q
Features
• 1.95 V to 3.6 V VDD supply voltage, 1.62 V to 3.6 V VDDIO voltage
• ±2 g/±4 g/±8 g dynamically selectable acceleration full-scale ranges
• Output Data Rates (ODR) from 1.563 Hz to 800 Hz
• Low noise: typically 99 μg/Hz in low-noise mode @ 200-Hz bandwidth
• 14-bit ADC resolution: 0.244 mg/LSB in ±2 g, full-scale range
• Embedded programmable acceleration event functions:
— Freefall and Motion Detection
— Transient Detection
— Vector-Magnitude Change Detection
— Pulse and Tap Detection (Single and Double)
— Orientation Detection (Portrait/Landscape)
• Programmable automatic ODR change using Auto-Wake and return to
Sleep functions to save power.
• 192-byte FIFO buffer, capable of storing up to 32 samples of X/Y/Z data
• Supports 4-wire SPI interface at up to 1 MHz; I²C Normal (100 kHz) and
Fast Modes (400 kHz)
• Integrated accelerometer self-test function
16 LEAD QFN
3 mm x 3 mm x 1 mm
Top View
VDDIO 1
BYP 2
Reserved 3
SCL/SCLK 4
GND 5
16 15 14
FXLS8471Q
678
13 Reserved
12 GND
11 INT1
10 SA1/CS_B
9 INT2
Pin Connections
Target Markets
• Industrial applications: vibration analysis, machine health monitoring, and platform stabilization
• Smartphones, tablets, digital cameras, and personal navigation devices
• Medical applications: patient monitoring, fall detection, and rehabilitation
Applications
• Shock and vibration monitoring (mechatronic compensation, shipping, and warranty usage logging)
• User interface (menu scrolling by orientation change, tap detection for button replacement)
• Orientation detection (portrait/landscape: up/down, left/right, back/front position identification)
• Gaming and real-time activity analysis (pedometry, freefall and drop detection for hard disk drives and other devices)
• Power management for mobile devices using inertial event detection
Freescale reserves the right to change the detail specifications as may be required to permit
improvements in the design of its products.
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