MC3233 datasheet, PDF - EEWORLD Datasheet

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MC3233: DescriptionAccelerometers 3x3 Low Resolution 10-pin Gen 2; CategoryThe sensor; File Size1MB，78 Pages; ManufacturermCube; Websitehttp://www.mcubemems.com

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MC3233 Overview

Accelerometers 3x3 Low Resolution 10-pin Gen 2

MC3233 Parametric

Parameter Name	Attribute value
Product Category	Accelerometers
Manufacturer	mCube
Sensor Type	3-axis
Sensing Axis	X, Y, Z
Acceleration	1.5 g
Sensitivity	85 LSB/g
Output Type	Digital
Interface Type	I2C
Resolution	6 bit, 7 bit, 8 bit
Supply Voltage - Max	3.6 VDC
Supply Voltage - Min	2 VDC
Operating Supply Current	5 uA
Package / Case	VLGA-10
Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 85 C
Mounting Style	SMD/SMT

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MC3233 3-Axis Accelerometer

GENERAL DESCRIPTION

FEATURES

Preliminary Datasheet

The MC3233 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.

Range, Sampling & Power



± 1.5g range

6,7, or 8-bit resolution

1 to 128 samples/sec

Low power operation



5 μA at 1 sample/sec

30 μA at 128 sample/sec

Auto-wake/sniff modes

Event Detection



Accurate event detection is enabled with a

low noise architecture that minimizes false

triggering found in competing devices. 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.



Low-noise architecture minimizes

false triggering

Tap, Shake, Drop

Portrait or landscape orientation with

programmable hysteresis

Tilt detection in six orientations

Simple System Integration



The sample rate of the MC3233 can be

programmed from 1 to 128 samples /

second. Even greater power savings can be

achieved by taking advantage of event

detection while the device is in a low power

mode. Specific orientation and gesture

conditions can trigger an interrupt to a

remote MCU, allowing the processor to

remain in a standby state until an event

occurs. Alternatively, the device supports

the reading of sample and event status via

polling.



I2C interface, up to 400 kHz

3 × 3 × 1.0 mm 10-pin VLGA

package

Pin-compatible to Freescale

MMA7660

Single-chip 3D silicon MEMS

mCube Proprietary and Confidential.

APS-048-0023v1.0

1 / 78

MC3233 3-Axis Accelerometer

Preliminary Datasheet

TABLE OF CONTENTS

3.1

3.2

3.3

3.4

Order Information............................................................................................................. 5

Functional Block Diagram ................................................................................................ 6

Packaging and Pin Description ........................................................................................ 7

Package Outline ................................................................................................................... 7

Pin Description ..................................................................................................................... 8

Typical Application Circuit .................................................................................................... 9

Tape and Reel ................................................................................................................... 10

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

5.1

5.2

Electrical Power and Internal Characteristics ....................................................... 14

I2C Electrical Characteristics ............................................................................... 15

I2C Timing Characteristics ................................................................................... 16

Sensor Sampling ................................................................................................................ 17

Offset and Gain Calibration ................................................................................................ 18

General Operation ......................................................................................................... 17

7.1

Operational States ......................................................................................................... 19

Operational State Flow .................................................................................................. 20

Sampling Rates .................................................................................................................. 22

8.1

8.2

8.3

8.4

Interrupts........................................................................................................................ 23

Enabling and Clearing Interrupts ........................................................................................ 23

Interrupt Support ................................................................................................................ 24

GINT Interrupt .................................................................................................................... 25

Event Detection .................................................................................................................. 26

9.1

9.2

9.3

Orientation Detection ..................................................................................................... 27

Orientation Event Filter....................................................................................................... 27

Orientation Hysteresis ........................................................................................................ 27

Portrait/Landscape Events ................................................................................................. 27

APS-048-0023v1.0

2 / 78

mCube Proprietary and Confidential.

MC3233 3-Axis Accelerometer

9.4

9.5

9.6

9.7

9.8

Preliminary Datasheet

Front/Back Events .............................................................................................................. 32

Shake Detection ................................................................................................................. 34

Drop Detection ................................................................................................................... 36

Tap Detection ..................................................................................................................... 37

Continuous Sampling ......................................................................................................... 39

10.1

10.2

10.3

I2C Interface .................................................................................................................. 40

Physical Interface ............................................................................................................... 40

Timing ................................................................................................................................ 40

I2C Message Format .......................................................................................................... 40

11.1

11.2

11.3

11.4

11.5

11.6

11.7

11.8

11.9

Register Interface .......................................................................................................... 42

Register Summary ............................................................................................................. 43

XOUT, YOUT & ZOUT: X, Y & Z-Axis Accelerometer Registers......................................... 45

TILT: Status Register ......................................................................................................... 46

OPSTAT: Operational State Status Register ...................................................................... 48

SC: Sleep Counter Register ............................................................................................... 49

INTEN: Interrupt Enable Register ....................................................................................... 50

MODE: Register ................................................................................................................. 51

SAMPR: Sample Rate Register.......................................................................................... 52

TAPEN: Tap Detection Enable Register ............................................................................. 54

TAPP: Tap Pulse Register ................................................................................................. 55

DROP: Drop Event Control Register .................................................................................. 56

SHDB: Shake Debounce Register ...................................................................................... 57

X-Axis Offset Registers ...................................................................................................... 58

Y-Axis Offset Registers ...................................................................................................... 59

Z-Axis Offset Registers ...................................................................................................... 60

X-Axis Gain Registers ........................................................................................................ 61

Y-Axis Gain Registers ........................................................................................................ 62

Z-Axis Gain Registers ........................................................................................................ 63

SHAKE_TH: Shake Threshold Register ............................................................................. 64

UD_Z_TH: Up/Down Z Axis Threshold Register ................................................................. 65

UD_X_TH: Up/Down X Axis Threshold Register ................................................................ 66

RL_Z_TH: Right/Left Z Axis Threshold Register ................................................................. 67

RL_Y_TH: Right/Left Y Axis Threshold Register ................................................................ 68

FB_Z_TH: Front/Back Z Axis Threshold Register ............................................................... 69

11.10

11.11

11.12

11.13

11.14

11.15

11.16

11.17

11.18

11.19

11.20

11.21

11.22

11.23

11.24

mCube Proprietary and Confidential.

APS-048-0023v1.0

3 / 78

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