ST LSM320HAY30 User Manual

LSM320HAY30

MEMS motion sensor module:

3D digital accelerometer and 2D pitch and yaw analog gyroscope

Features

■ 2.7 V to 3.6 V power supply operation

■ Low voltage compatible digital IOs, 1.8 V

■ ±2 g/±4 g/±8 g dynamically selectable full-scale

■ ±300 dps absolute analog angular rate output

2

■ I

C/SPI digital linear acceleration interface (16

bit data output)

■ Two separated outputs for pitch and yaw axis

(1x and 4x amplified)

■ Integrated low-pass filters for angular rate

■ 2 independent programmable interrupt

generators for free-fall and motion detection

■ Sleep-to-wakeup function

■ 6D orientation detection

■ Extended operating temperature range (40 °C

to +85 °C)

■ High stability over temperature

■ High shock survivability

■ Embedded self-test

■ Embedded power-down

■ Embedded low-power mode

■ ECOPACK

®

RoHS and “Green” compliant

(see Section 9)

Applications

■ Motion control for smart user interface

■ Display orientation

■ Gaming and virtual reality input devices

■ Industrial and robotics

■ Vibration monitoring and compensation

■ Impact recognition and logging

■ Motion-activated functions

■ Intelligent power-saving for handheld devices

■ Free-fall detection

Description

The LSM320HAY30 is a low-power system-in­package featuring a 3D digital linear acceleration
sensor and a 2D analog angular rate pitch and
yaw sensor. It provides excellent temperature
stability and high resolution over an extended
operating temperature range (-40°C to +85°C).
ST’s family of sensor modules leverages the
robust and mature manufacturing process already
used for the production of micromachined
accelerometers. The LSM320HAY30 has a
dynamically user-selectable full-scale
acceleration range of ±2 g/±4 g/±8 g, and an
angular rate of ±300 dps capable of detecting
rates with a -3 dB bandwidth up to 140 Hz along
pitch and yaw axes. The LSM320HAY30 is
capable of measuring linear accelerations with
output data rates from 0.5 Hz up to 1 kHz. The
embedded self-test capability allows the user to
check the functioning of each sensor in the final
application. The device can be configured to
generate an interrupt signal by inertial
wakeup/free-fall events as well as by the position
of the device itself. Several years ago ST
successfully pioneered the use of this package for
accelerometers. Today, ST has the widest
manufacturing capability and strongest expertise
in the world for production of sensors in plastic
LGA packages.

LGA-28L (4.4x7.5x1.1mm)

December 2009 Doc ID 16917 Rev 1 1/42

www.st.com

42

Contents LSM320HAY30

Contents

1 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.1 Pin connection and description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2 Mechanical and electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . 9

2.1 Mechanical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4 Functionality and terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.1 Factory calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.2 Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.3 Zero level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

4.4 Self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4.5 Advanced features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.5.1 Linear acceleration sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.5.2 Angular rate sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5.1 Linear acceleration sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.2 Angular rate sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.3 Soldering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

6 Digital interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6.1 I2C serial interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6.1.1 I2C operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.2 SPI bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.2.1 SPI read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6.2.2 SPI write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

6.2.3 SPI read in 3-wires mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

7 Register mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

8 Register description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

2/42 Doc ID 16917 Rev 1

LSM320HAY30 Contents

8.1 WHO_AM_I (0Fh) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

8.2 LA_CTRL_REG1 (20h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

8.3 LA_CTRL_REG2 (21h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

8.4 LA_CTRL_REG3 (22h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

8.5 LA_CTRL_REG4 (23h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

8.6 LA_CTRL_REG5 (24h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

8.7 LA_HP_FILTER_RESET (25h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

8.8 REFERENCE (26h . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ) 32

8.9 LA_STATUS_REG (27h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

8.10 LA_OUT_X_L (28h), LA_OUT_X_H (29h) . . . . . . . . . . . . . . . . . . . . . . . . 33

8.11 LA_OUT_Y_L (2Ah), LA_OUT_Y_H (2Bh) . . . . . . . . . . . . . . . . . . . . . . . 33

8.12 LA_OUT_Z_L (2Ch), LA_OUT_Z_H (2Dh) . . . . . . . . . . . . . . . . . . . . . . . 33

8.13 LA_INT1_CFG (30h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

8.14 LA_INT1_SRC (31h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

8.15 LA_INT1_THS (32h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

8.16 LA_INT1_DURATION (33h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

8.17 LA_INT2_CFG (34h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

8.18 LA_INT2_SRC (35h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

8.19 LA_INT2_THS (36h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

8.20 LA_INT2_DURATION (37h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

9 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

10 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

11 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Doc ID 16917 Rev 1 3/42

List of tables LSM320HAY30

List of tables

Table 1. Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 2. Mechanical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Table 3. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Table 4. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Table 5. Angular rate sleep mode and power-down mode configuration . . . . . . . . . . . . . . . . . . . . . 14

Table 6. External component values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 7. Serial interface pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Table 8. Serial interface pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Table 9. SAD+Read/Write patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Table 10. Transfer when master is writing one byte to slave . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Table 11. Transfer when master is writing multiple bytes to slave . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Table 12. Transfer when master is receiving (reading) one byte of data from slave . . . . . . . . . . . . . 20

Table 13. Transfer when master is receiving (reading) multiple bytes of data from slave . . . . . . . . . 20

Table 14. Register address map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Table 15. WHO_AM_I register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Table 16. LA_CTRL_REG1 register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Table 17. LA_CTRL_REG1 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Table 18. Power mode and low-power output data rate configurations . . . . . . . . . . . . . . . . . . . . . . . 27

Table 19. Normal mode output data rate configurations and low-pass cut-off frequencies . . . . . . . . 27

Table 20. LA_CTRL_REG2 register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Table 21. LA_CTRL_REG2 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Table 22. High-pass filter mode configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Table 23. High-pass filter cut-off frequency configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Table 24. LA_CTRL_REG3 register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Table 25. LA_CTRL_REG3 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Table 26. Data signal on INT 1 and INT 2 pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Table 27. LA_CTRL_REG4 register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Table 28. LA_CTRL_REG4 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Table 29. LA_CTRL_REG5 register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Table 30. LA_CTRL_REG5 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Table 31. Sleep-to-wake configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Table 32. REFERENCE register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Table 33. REFERENCE description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Table 34. LA_STATUS_REG register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Table 35. LA_STATUS_REG description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Table 36. LA_INT1_CFG register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Table 37. LA_INT1_CFG description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Table 38. Interrupt 1 source configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Table 39. LA_INT1_SRC register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Table 40. LA_INT1_SRC description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Table 41. LA_INT1_THS register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Table 42. LA_INT1_THS description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Table 43. LA_INT1_DURATION register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Table 44. LA_INT2_DURATION description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Table 45. LA_INT2_CFG register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Table 46. LA_INT2_CFG description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Table 47. Interrupt mode configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Table 48. LA_INT2_SRC register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

4/42 Doc ID 16917 Rev 1

LSM320HAY30 List of tables

Table 49. LA_INT2_SRC description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Table 50. LA_INT2_THS register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Table 51. LA_INT2_THS description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Table 52. LA_INT2_DURATION register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Table 53. LA_INT2_DURATION description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Table 54. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Table 55. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Doc ID 16917 Rev 1 5/42

List of figures LSM320HAY30

List of figures

Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 2. Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 3. LSM320HAY30 electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 4. Angular rate output response vs. rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 5. Read and write protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 6. SPI read protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 7. Multiple byte SPI read protocol (2 byte example) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 8. SPI write protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 9. Multiple byte SPI write protocol (2 byte example). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 10. SPI read protocol in 3-wires mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 11. LGA-28: mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

6/42 Doc ID 16917 Rev 1

LSM320HAY30 Block diagram and pin description

1 Block diagram and pin description

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Doc ID 16917 Rev 1 7/42

Block diagram and pin description LSM320HAY30

1.1 Pin connection and description

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Table 1. Pin description

Pin# Name Function

1 Vdd_IO Power supply for I/O pins

2SCL/SPCI

3 CS SPI enable/I

4 SDA/SDI/SDO

5 SDO/SA0

2

C serial clock (SCL)/SPI serial port clock (SPC)

2

C/SPI mode selection (1: I2C mode; 0: SPI enabled)

2

C serial data (SDA)/SPI serial data input (SDI)

I
3-wire interface serial data output (SDO)

SPI serial data output (SDO)/ I

2

address (SA0)

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C less significant bit of the device

6 INT1 Inertial interrupt 1

7 INT2 Inertial interrupt 2

8 ARHP

Angular rate high-pass filter reset (logic 0: normal operation mode;
logic1: external high-pass filter is reset)

9 ARPD Angular rate power-down (see Table 5

10 ARST Angular rate self-test (see Table 5)

11 GND 0 V supply

12 GND 0 V supply

13 RES 0 V supply

14 GND 0 V supply

15 GND 0 V supply

16 FILTVDD PLL filter connection pin 16

17 VCONT PLL filter connection pin 15

18 OUT X Not amplified Out X

8/42 Doc ID 16917 Rev 1

)

LSM320HAY30 Block diagram and pin description

Table 1. Pin description (continued)

Pin# Name Function

19 4xIN X Input of 4x amplifier

20 4xOUT X X rate signal output voltage (amplified)

21 Vref Reference voltage

22 4x OUTZ Z rate signal output voltage (amplified)

23 4xIN Z Input of 4x amplifier

24 OUT Z Not amplified Out Z

25 VDD Power supply

26 RES Connected to Vdd

27 RES Connected to Vdd

28 RES Connected to Vdd

Doc ID 16917 Rev 1 9/42

Mechanical and electrical specifications LSM320HAY30

2 Mechanical and electrical specifications

2.1 Mechanical characteristics

@ Vdd=3,0 V, T=25 °C unless otherwise noted.

Table 2. Mechanical characteristics

Symbol

LA_TCSo

AR_TCSo

LA_TyOff

LA_TCOff

AR_TCZrl

(1)

Parameter Test conditions Min. Typ.

FS bit set to 00 ±2.0

LA_FS

Linear acceleration measurement

(3)

range

FS bit set to 11 ±8.0

4x OUT (amplified) ±300

AR_FS Angular rate measurement range

OUT (not amplified) ±1200

FS bit set to 00 (12 bit) 0.9 1 1.1

LA_So Linear acceleration sensitivity

FS bit set to 11 (12 bit) 3.5 3.9 4.3

AR_So Angular rate sensitivity

(4)

4x OUT (amplified) 3.33 mV/dps

OUT (not amplified) 0.83 mV/dps

Linear acceleration sensitivity
change vs. temperature

Angular rate sensitivity change vs
temperature

Linear acceleration typical zero-g
level offset accuracy

Linear acceleration zero-g level
change vs. temperature

AR_Zrl Zero-rate level

(5),(6)

(6)

FS bit set to 00 ±0.01 %/°C

Delta from 25°C 0.07 %/°C

FS bit set to 00 ±20 mg

Max delta from 25°C ±0.1 mg/°C

AR_Vref Reference voltage 1.5 V

Angular rate zero-rate level
change vs. temperature

Max delta from 25°C ±0.05 dps/°C

LA_An Linear acceleration noise density FS bit set to 00 218 µg/√ Hz

AR_Rn Angular rate noise density 0.02 dps/√ Hz

AR_NL Angular rate non linearity Best fit straight line ±1 % FS

LA_BW Linear acceleration bandwidth

AR_BW Angular rate bandwidth

(7)

(8)

FS bit set to 00 X axis +500 LSb

LA_ST

Linear acceleration self-test
output change

(9),(10),(11)

FS bit set to 00 Y axis -500 LSb

FS bit set to 00 Z axis +600 LSb

(a)

(2)

Max. Unit

dps

mg/digitFS bit set to 01 (12 bit) 1.8 2 2.2

1.5 V

ODR/2 Hz

140 Hz

gFS bit set to 01 ±4.0

a. The product is factory calibrated at 3.0 V. The operational power supply range is from 2.7 V to 3.6 V.

10/42 Doc ID 16917 Rev 1

LSM320HAY30 Mechanical and electrical specifications

Table 2. Mechanical characteristics (continued)

Symbol

(1)

Parameter Test conditions Min. Typ.

(2)

Max. Unit

AR_ST

Angular rate self-test output
change

250 mV

Top Operating temperature range -40 +85 °C

1. Linear acceleration (LA), Angular Rate (AR) parameter labeling

2. Typical specifications are not guaranteed

3. Verified by wafer level test and measurement of initial offset and sensitivity

4. Sensitivity and zero-rate offset are not ratiometric to supply voltage

5. Typical zero-g level offset value after MSL3 preconditioning

6. Offset can be eliminated by enabling the built-in high-pass filter

7. Refer to Table 23 for filter cut-off frequency.

8. The product is capable of measuring angular rates extending from DC to the selected BW.

9. The sign of “Self-test output change” is defined by LA_CTRL_REG4 STsign bit (Table 27), for all axes.

Linear acceleration sensing Self-Test output changes with the power supply. “Self-test output change” is defined as

10.
OUTPUT[LSb]
Full-scale

11. Output data reach 99% of final value after 1/ODR+1ms when enabling
device filtering.

(LA_CTRL_REG4 ST bit=1)

- OUTPUT[LSb]

(LA_CTRL_REG4 ST bit=0)

linear acceleration sensing

. 1LSb=4g/4096 at 12bit representation, ±2 g

self-test mode, due to

2.2 Electrical characteristics

@ Vdd=3,0 V, T=25 °C unless otherwise noted.

(b)

Table 3. Electrical characteristics

Symbol Parameter Test condition Min. Typ.

Vdd Supply voltage 2.7 3.0 3.6 V

Vdd_IO I/O pins supply voltage

LA_Idd

AR_Idd

LA_IddLP

AR_IddSl

LA_IddPdn

AR_IddPdn

Linear acceleration current
consumption in normal mode

Angular rate current consumption
in normal mode

Linear acceleration current
consumption in low-power mode

Angular rate current consumption
in sleep mode

Linear acceleration current
consumption in power-down mode

Angular rate current consumption
in power-down mode

b. The product is factory calibrated at 3 V.

(2)

1.71 Vdd+0.1 V

ODR = 50 Hz 0.25 mA

ARPD pin
connected to GND

= 0.5 Hz 10 µA

ODR

LP

ARPD, ARST pin
connected to Vdd

ARPD pin
connected to Vdd

(1)

Max. Unit

6.8 mA

2.1 5 mA

1µA

15µA

Doc ID 16917 Rev 1 11/42

Mechanical and electrical specifications LSM320HAY30

Table 3. Electrical characteristics (continued)

Symbol Parameter Test condition Min. Typ.

(1)

Max. Unit

AR_VST Angular rate self-test input

AR_VPD Angular rate power-down input

LA_VIH

LA_VIL

LA_VOH

LA_VOL

LA_ODR

LA_ODR

Linear acceleration digital high
level input voltage

Linear acceleration digital low level
input voltage

Linear acceleration high level
output voltage

Linear acceleration low level
output voltage

Linear acceleration output data
rate in normal mode

Linear acceleration output data

LP

rate in low-power mode

Logic 0 level 0 0.2*Vdd

Logic 1 level 0.8*Vdd Vdd

Logic 0 level 0 0.2*Vdd

Logic 1 level 0.8*Vdd Vdd

0.8*Vdd_IO V

0.2*Vdd_IO V

0.9*Vdd_IO V

0.1*Vdd_IO V

DR bit set to 00 50

DR bit set to 01 100

DR bit set to 10 400

DR bit set to 11 1000

PM bit set to 010 0.5

PM bit set to 011 1

PM bit set to 100 2

PM bit set to 101 5

PM bit set to 110 10

V

V

Hz

Hz

LA_Ton Linear acceleration turn-on time

AR_Ton Angular rate turn-on time

(4)

(3)

ODR = 100 Hz

1/ODR+1

ms

200 ms

Top Operating temperature range -40 +85

1. Typical specifications are not guaranteed

2. It is possible to remove Vdd, maintaining Vdd_IO without blocking the communication buses. In this condition the
measurement chain is powered off.

3. Time to obtain valid data after exiting power-down mode

4. Time to obtain valid data after exiting power-down mode

12/42 Doc ID 16917 Rev 1

s

°C

LSM320HAY30 Absolute maximum ratings

3 Absolute maximum ratings

Stresses above those listed as “Absolute maximum ratings” may cause permanent damage
to the device. This is a stress rating only and functional operation of the device under these
conditions is not implied. Exposure to maximum rating conditions for extended periods may
affect device reliability.

Table 4. Absolute maximum ratings

Symbol Ratings Maximum value Unit

Vdd Supply voltage -0.3 to 4.8 V

Vin Input voltage on any control pin (PD, ST) -0.3 to Vdd +0.3 V

A Acceleration

Vdd_IO I/O pin supply voltage -0.3 to 6 V

3000 for 0.5 ms g

10000 for 0.1 ms g

Vin

A

A

T

T

ESD Electrostatic discharge protection 2 (HBM) kV

Input voltage on any control pin
(CS, SCL/SPC, SDA/SDI/SDO, SDO/SA0)

Acceleration (any axis, powered, Vdd = 3 V)

POW

Acceleration (any axis, unpowered)

UNP

Operating temperature range -40 to +85 °C

OP

Storage temperature range -40 to +125 °C

STG

-0.3 to Vdd_IO +0.3 V

3000 for 0.5 ms g

10000 for 0.1 ms g

3000 for 0.5 ms g

10000 for 0.1 ms g

This is a mechanical shock sensitive device, improper handling can cause permanent
damage to the part.

This is an ESD sensitive device, improper handling can cause permanent damage to
the part.

Doc ID 16917 Rev 1 13/42