LSM330 datasheet(20/75 Pages) STMICROELECTRONICS

20 / 75 page

Functionality

LSM330

20/75

DocID023426 Rev 3

Functionality

The LSM330 is a system-in-package featuring a 3D digital accelerometer with two

embedded state machines and a 3D digital gyroscope, together with two FIFO memory

blocks available to manage linear acceleration and angular rate data.

The device includes specific sensing elements and two IC interfaces capable of measuring

both the acceleration and angular rate applied to the module and providing a signal to

external applications through an SPI/I2C serial interface.

The various sensing elements are manufactured using specialized micromachining

processes, while the IC interfaces are developed using CMOS technology that allows the

design of a dedicated circuit which is trimmed to better match the sensing element

characteristics.

4.1

Power modes

The linear acceleration sensor and the angular rate sensor can be either activated or

separately set in power-down/ sleep mode for applications optimized for power saving.

The acceleration sensor operating modes can be selected between normal or power-down

through CTRL_REG5_A (20h). The angular rate sensor operating mode can be selected

among normal power-down or sleep mode, through CTRL_REG1_G (20h).

4.2

Linear acceleration sensor digital main blocks

4.2.1

State machine

The LSM330 embeds two state machines able to run a user-defined program.

The program is composed of a set of instructions that defines the transition to successive

states. Conditional branches are possible.

From each state (n) it is possible to have a transition to the next state (n+1) or to a reset

state. The transition to the reset point happens when the “RESET condition” is true. The

transition to the next step happens when the “NEXT condition” is true.

An interrupt is triggered when the Output/Stop/Continue state is reached.

Each State machine allows implementing, in a flexible way, gesture recognition, free-fall,

wake-up, 4D/6D orientation, pulse counter and step recognition, click/double-click,

shake/double-shake, face-up/face-down, turn/double-turn:

–

Code and parameters are loaded by the host into dedicated memory areas for the

state program

–

State program with timing based on ODR or decimated time

–

Possibility of conditional branches

LSM330 数据表(PDF) 20 Page - STMicroelectronics

LSM330 数据表(HTML) 20 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75

数据表下载