MC3216 3-Axis Accelerometer
Preliminary Datasheet
GENERAL DESCRIPTION
FEATURES
Range, Sampling & Power
The MC3216 is a low-noise, integrated
digital output 3-axis accelerometer with a
feature set optimized for cell phones and
consumer product motion sensing.
Applications include user interface control,
gaming motion input, electronic compass tilt
compensation for cell phones, game
controllers, remote controls and portable
media products.
±2,4,8,12 or ±16g ranges
8, 10 or 14-bit resolution
0.25 - 256 samples/sec
50 - 130 μA typical current
Event Detection
Low-noise architecture minimizes
false triggering
Independent X,Y,Z Tap
Low noise and low power are inherent in
the monolithic fabrication approach, where
the MEMS accelerometer is integrated in a
single-chip with the electronics integrated
circuit.
Simple System Integration
I2C interface, up to 400 kHz
3 × 3 × 0.92 mm 10-pin package
o
Pin-compatible to Freescale
MMA7660
Single-chip 3D silicon MEMS
<200μg / √Hz noise
In the MC3216 the internal sample rate can
be set from 0.25 to 256 samples / second.
Specific tap or sample acquisition
conditions can trigger an interrupt to a
remote MCU. Alternatively, the device
supports the reading of sample and event
status via polling.
mCube Proprietary.
© 2014 mCube Inc. All rights reserved.
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MC3216 3-Axis Accelerometer
Preliminary Datasheet
TABLE OF CONTENTS
1
2
3
3.1
3.2
3.3
3.4
3.5
Order Information............................................................................................................. 4
Functional Block Diagram ................................................................................................ 5
Packaging and Pin Description ........................................................................................ 6
Package Outline ................................................................................................................... 6
Package Orientation ............................................................................................................. 7
Pin Description ..................................................................................................................... 8
Typical Application Circuit .................................................................................................... 9
Tape and Reel ................................................................................................................... 10
4
4.1
4.2
4.3
Specifications................................................................................................................. 12
Absolute Maximum Ratings ................................................................................................ 12
Sensor Characteristics ....................................................................................................... 13
Electrical and Timing Characteristics.................................................................................. 14
4.3.1
4.3.2
4.3.3
5
5.1
5.2
5.3
Electrical Power and Internal Characteristics ....................................................... 14
I2C Electrical Characteristics ............................................................................... 15
I2C Timing Characteristics ................................................................................... 16
Sensor Sampling ................................................................................................................ 17
Offset and Gain Calibration ................................................................................................ 17
Tap Detection ..................................................................................................................... 17
General Operation ......................................................................................................... 17
6
7
8
8.1
8.2
Operational States ......................................................................................................... 18
Operational State Flow .................................................................................................. 19
Interrupts........................................................................................................................ 20
Enabling and Clearing Interrupts ........................................................................................ 20
ACQ_INT Interrupt ............................................................................................................. 20
9
9.1
Sampling ........................................................................................................................ 21
Continuous Sampling ......................................................................................................... 21
10
10.1
10.2
10.3
10.4
I2C Interface .................................................................................................................. 22
Physical Interface ............................................................................................................... 22
Timing ................................................................................................................................ 24
I2C Message Format .......................................................................................................... 24
Watchdog Timer ................................................................................................................. 25
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MC3216 3-Axis Accelerometer
11
11.1
11.2
11.3
11.4
11.5
11.6
11.7
11.8
11.9
11.10
11.11
11.12
11.13
11.14
11.15
11.16
11.17
Preliminary Datasheet
Register Interface .......................................................................................................... 26
Register Summary ............................................................................................................. 27
SR: Status Register ............................................................................................................ 29
OPSTAT: Device Status Register ....................................................................................... 30
INTEN: Interrupt Enable Register ....................................................................................... 31
MODE: Mode Control Register ........................................................................................... 32
SRTFR: Sample Rate and Tap Feature Register ............................................................... 33
TAPEN: Tap Control Register ............................................................................................ 34
TTTRX,TTTRY, TTTRZ: X, Y and Z Tap Duration and Threshold Registers ...................... 35
XOUT_EX, YOUT_EX & ZOUT_EX: X, Y, Z-Axis Acceleration Registers .......................... 36
OUTCFG: Output Configuration Register ........................................................................... 37
X-Axis Offset Registers ...................................................................................................... 38
Y-Axis Offset Registers ...................................................................................................... 39
Z-Axis Offset Registers ...................................................................................................... 40
X-Axis Gain Registers ........................................................................................................ 41
Y-Axis Gain Registers ........................................................................................................ 42
Z-Axis Gain Registers ........................................................................................................ 43
PCODE: Product Code....................................................................................................... 44
12
13
14
Index of Tables .............................................................................................................. 45
Revision History ............................................................................................................. 46
Legal .............................................................................................................................. 47
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© 2014 mCube Inc. All rights reserved.
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MC3216 3-Axis Accelerometer
Preliminary Datasheet
1 ORDER INFORMATION
Part Number
MC3216
Resolution
8 to 14-bit
Order Number
MC3216
Package
LGA-10
Shipping
Tape & Reel, 5Ku
Table 1. Order Information
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MC3216 3-Axis Accelerometer
Preliminary Datasheet
2 FUNCTIONAL BLOCK DIAGRAM
VDD/VDDIO
Sensors
Regulators
and Bias
Oscillator/
Clock
Generator
Mode Logic
Interrupt
INTN
X
Event
Detection
Offset/
Gain
Adjust
Range &
Scale
SCL
I2C Slave
Interface
SDA
Registers
(64 x 8)
Y
C to V
A/D Converter
(Sigma Delta)
GND
Z
X,Y,Z
data paths
OTP
Memory
VPP
Figure 1. Block Diagram
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