Powerful Sensing Solutions for a Better Life
DTOS
ACCELEROMETER
Digital Thermal Orientation Sensing Accelerometer
MXC6255XU
MXC6255XU - DTOS Accelerometer
© 2010 MEMSIC, Inc.
One Technology Drive, Suite 325 Andover, MA 01810, USA
Tel: +1 978 738 0900 Fax: +1 978 738 0196
www.memsic.com
23/07/2013
Information furnished by MEMSIC is believed to be accurate and reliable. However, no responsibility is assumed by MEMSIC for its
use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by
implication or otherwise under any patent or patent rights of MEMSIC. Information presented in this document is the property of
MEMSIC, Inc., is considered proprietary, and is not to be reproduced without the specific written permission of MEMSIC, Inc.
Document Version B
Page 1 of 13
Powerful Sensing Solutions for a Better Life
DTOS ACCELEROMETER
MXC6255XU: Fully Integrated Thermal Accelerometer
Features
Fully Integrated Thermal Accelerometer
X/Y Axis, 8 bit, Acceleration A/D Output (± 2g)
Absolute 0G offset less than +/- 50mg
4-position Orientation Detection
Shake Detection with Interrupt
Programmable Shake Threshold
Shake Direction Detection
I C Interface
Power Down Mode
Shock Survival Greater than 50,000 g
Operating Supply Voltage from 2.5V to 5.5V with
1.8V compatible I/O
Produces no Mechanical Sounds ("click")
Package Size 3x3x1mm
2
General Description
The MEMSIC Digital Thermal Orientation Sensor (DTOS) is the world's first
fully-integrated orientation sensor. Its operation is based on our patented
MEMS-thermal technology and is built using a standard 0.18um CMOS process.
DTOS contains no moving parts (such as a ball) and thus eliminates field-reliability
and repeatability issues associated with competitive products. It also eliminates the
"click" sounds typically heard in ball based orientation sensors. Shock survival is
greater than 50,000g.
DTOS detects four orientations, shake and shake direction.
2
In addition, it provides X/Y axis acceleration signals with very low 0g offset. An I C
interface is used to communicate with this device and an interrupt pin (INT) is
provided for shake and orientation.
through the I C interface.
2
The DTOS also has a power down enabled
Functional Block Diagram
Applications
Consumer:
Cell Phones
Digital Still Cameras (DSC)
Digital Video Cameras (DVC)
LCD TV
Toys
MP3, MP4 Players
Household Safety:
Fan Heaters
Halogen Lamps
Iron
Cooling Fans
The DTOS is packaged in a hermetically sealed 6-pin surface mount package (3 mm
x 3 mm x 1mm); the product is RoHS compatible and operates over -20~70℃
temperature range.
Figure 1
MXC6255XU - DTOS Accelerometer
© 2010 MEMSIC, Inc.
One Technology Drive, Suite 325 Andover, MA 01810, USA
Tel: +1 978 738 0900 Fax: +1 978 738 0196
www.memsic.com
23/07/2013
Information furnished by MEMSIC is believed to be accurate and reliable. However, no responsibility is assumed by MEMSIC for its
use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by
implication or otherwise under any patent or patent rights of MEMSIC. Information presented in this document is the property of
MEMSIC, Inc., is considered proprietary, and is not to be reproduced without the specific written permission of MEMSIC, Inc.
Document Version B
Page 2 of 13
Powerful Sensing Solutions for a Better Life
DTOS ACCELEROMETER
MXC6255XU: Fully Integrated Thermal Accelerometer
3.00SQ.±0.10
2.80SQ.±0.10
Pin Description: LCC6 Package
Pin
1
Name
INT
Description
This pin is the DTOS interrupt output. The logic level on this pin reflects the state of the INT bit in the
STATUS register. INT is set when the orientation differs from the last orientation read by the processor, or
a shake event is detected. INT is cleared upon reading of the STATUS register.
2
NC
VDD
I
2
C SCL
During normal operation, this pin must be left floating.
This is the power supply input. The DC voltage should be between 2.5 and 5.5 volts.
This pin is the serial clock line for the I
2
C interface. Since the DTOS only operates as a slave device, this
pin is always an input.
5
I
2
C SDA
This pin is the serial data line for the I
2
C interface. It is an I/O pin that functions as an input during a write,
and an output during a read from the DTOS.
3
2
1
655
028
4
5
Y
+
6
3
X
+
4
6
GND
This is the ground pin for the DTOS.
Absolute Maximum Ratings*
Supply Voltage (V
DD
)
………………...-0.5 V to +7.0V
Storage Temperature ………………..-40°C to +150°C
Acceleration ……………………………………..50,000
g
Figure 2
Top View
*Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a
stress rating only; the functional operation of the device at these or any other conditions above those indicated in the
operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended
periods may affect device reliability.
Electrical Specifications
1
Parameter (Units)
Operating Voltage Range (V)
VIO(I C interface)(V)
In power-up mode
Supply Current (mA)
In power-down mode
Turn-On Time (ms)
2
0.0004
300
0.001
500
0.5
-20
+70
10
2
Conditions
Minimum
2.5
1.62
Typical
Maximum
5.5
1.8
1.2
VDD
Figure 3
Side View
Turn-off Time (ms)
Operating Temperature Range (℃)
VDD Rise Time (ms)
3
Notes:
1
All specifications are at 3V and room temperature unless otherwise noted.
2
Time to obtain valid data after existing
power-down mode.
3
Maximum allowable power supply rise time from 0.25V to 2.5V (minimum). Slower VDD rise time may cause
erroneous data retrieval from OTP memory at power-up.
Sensor Characteristics
1
Parameter (Units)
Measurement Range (g)
Alignment Error (°)
Sensitivity Error (%)
Sensitivity (LSB/g)
Sensitivity Drift Over Temperature (%)
Conditions
X/Y Axis
X/Y Axis
X/Y Axis
X/Y Axis
Delta from 25
℃
(-20
℃
-
70
℃)
-5
± 1.0
0
64
± 12
± 18
Minimum
Typical
Maximum
± 2.0
± 2.0
5
Figure 4
Bottom View
Zero g Offset Bias Level (mg)
Zero g Offset Temperature coefficient (mg/℃)
3dB Signal Bandwidth (Hz)
X/Y Axis (25
℃)
X/Y Axis (-20
℃
- 70
℃)
-30
0.3
10
+30
LCC6 Package Drawing Package Thickness:
1.05mm +/- 0.1mm
Notes:
1
All specifications are at 3V and room temperature unless otherwise noted.
MXC6255XU - DTOS Accelerometer
© 2010 MEMSIC, Inc.
One Technology Drive, Suite 325 Andover, MA 01810, USA
Tel: +1 978 738 0900 Fax: +1 978 738 0196
www.memsic.com
23/07/2013
Information furnished by MEMSIC is believed to be accurate and reliable. However, no responsibility is assumed by MEMSIC for its
use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by
implication or otherwise under any patent or patent rights of MEMSIC. Information presented in this document is the property of
MEMSIC, Inc., is considered proprietary, and is not to be reproduced without the specific written permission of MEMSIC, Inc.
Document Version B
Page 3 of 13
Powerful Sensing Solutions for a Better Life
DTOS ACCELEROMETER
MXC6255XU: Fully Integrated Thermal Accelerometer
Digital Parameters
S
Symbol
V
IH
V
IL
Parameter (Units)
High Level Input Voltage (Volts)
Low Level Input Voltage (Volts)
Hysteresis of Schmitt Trigger Input (Volts)
Input Leakage, All Inputs (uA)
High Level Output Voltage (Volts)
Low Level Output Voltage (Volts)
0.1
-10
0.8*VIO
0.2*VIO
10
Minimum
0.7*VIO
0.3*VIO
Typical
Maximum
t
BF
P
V
HYS
I
IL
t
SU;P
V
OH
V
OL
Sr
Digital Switching Characteristics
Symbol
Parameter (Units)
Operating Valid Time (ms)
1
SCK Clock Frequency (kHz)
Rise Time (us)
Fall Time (us)
SCL Low Time (us)
SCL High Time (us)
Data Hold Time (us)
Data Set-Up Time (us)
Start Set-Up Time (us)
Start Hold Time (us)
Stop Set-Up Time (us)
Bus Free Time Between Start and Stop (us)
1.3
0.6
0
0.1
0.6
0.6
0.6
1.3
0.9
Minimum
20
0
400
0.3
0.3
Typical
Maximum
t
op
f
SCL
t
high
t
SU;S
t
SU;D
t
r
t
f
t
low
t
r
t
high
t
HD;D
t
HD;D
t
SU;D
t
low
t
HD;S
t
SU;S
t
HD;S
S
t
SU;P
t
BF
t
op
t
f
Note: 1. Master is recommended not to talk with the device within 20mS after power up1.2. It is not recommended to keep both SCL
and SDA signals low for over 10ms.
VDD
SDA
Figure 5
SCL
MXC6255XU - DTOS Accelerometer
© 2010 MEMSIC, Inc.
One Technology Drive, Suite 325 Andover, MA 01810, USA
Tel: +1 978 738 0900 Fax: +1 978 738 0196
www.memsic.com
23/07/2013
Information furnished by MEMSIC is believed to be accurate and reliable. However, no responsibility is assumed by MEMSIC for its
use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by
implication or otherwise under any patent or patent rights of MEMSIC. Information presented in this document is the property of
MEMSIC, Inc., is considered proprietary, and is not to be reproduced without the specific written permission of MEMSIC, Inc.
Document Version B
Page 4 of 13
Powerful Sensing Solutions for a Better Life
DTOS ACCELEROMETER
MXC6255XU: Fully Integrated Thermal Accelerometer
Circuit Schematics
Note:
R1 and R2 are pull-up resistors, the value can be
determined by customer according to the requirement of
the host device, and the recommendation value is
2.7KOhm.
INT does not need any pull-up/pull-down resistor
If INT is not used, keep it disconnected (don't pull up or
pull down)
Leave NC pin as no connection.
Figure 6
Landing Pattern
(Unit: mm)
1 INT
2 NC
3 VDD
6 GND
5 SDA
4 SCL
Figure 7
MXC6255XU - DTOS Accelerometer
© 2010 MEMSIC, Inc.
One Technology Drive, Suite 325 Andover, MA 01810, USA
Tel: +1 978 738 0900 Fax: +1 978 738 0196
www.memsic.com
23/07/2013
Information furnished by MEMSIC is believed to be accurate and reliable. However, no responsibility is assumed by MEMSIC for its
use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by
implication or otherwise under any patent or patent rights of MEMSIC. Information presented in this document is the property of
MEMSIC, Inc., is considered proprietary, and is not to be reproduced without the specific written permission of MEMSIC, Inc.
Document Version B
Page 5 of 13
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