ST LSM6DS3H：低功耗六轴传感器，集成姿态解算与优化选配电子罗盘

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LSM6DS3H是一款由STMicroelectronics生产的高性能低功耗六轴传感器模块，专为各种应用设计，包括但不限于运动跟踪、姿态估测和电子图像稳定(EIS)。该设备集成了一个三轴加速度计和一个三轴陀螺仪，旨在提供始终在线的体验，即使在节能模式下，其平均功耗也能控制在0.85mA（正常模式）和1.1mA（高性能模式）以内，最高可达1.6kHz的采样率。其特点包括： 1. **低功耗**：无论是加速度计还是陀螺仪，都具有极低的功耗，使得设备在持续运行时对电池寿命影响较小，适合长时间运行的移动设备。 2. **接口灵活性**：支持SPI（3/4线）和I2C接口，方便与主处理器进行通信，同时还有一个辅助SPI接口，特别适合于光学图像稳定应用（OIS）。 3. **高级功能**：具备电子图像稳定(EIS)和光学图像稳定(OIS)功能，对于摄像设备的防抖效果至关重要。此外，它还支持智能FIFO（先进先出缓冲器），可优化数据传输和处理。 4. **测量范围**：加速度计支持±2/±4/±8/±16g的全量程，陀螺仪则有±125/±250/±500/±1000/±2000dps的全量程，满足不同精度和动态范围的需求。 5. **供电选项**：提供宽广的电压范围，包括模拟供电1.71V至3.6V以及独立的IO供电1.62V，适应多种电源配置。 6. **紧凑设计**：模块尺寸仅为2.5mm x 3mm x 0.83mm，占用空间小，适合空间有限的应用场合。 7. **同步特性**：SPI和I2C接口具有数据同步功能，提高通信效率和准确性。 8. **内置温度传感器**：可以监测环境温度，有助于系统温度管理。 9. **环保合规**：符合ECOPACK®、RoHS和绿色电子标准，体现了ST的环保承诺。该传感器广泛应用于以下领域： - **电子图像稳定(EIS)**：确保摄像头在移动或晃动环境下拍摄清晰稳定的照片。 - **数据采集**：在科学研究、工业自动化或物联网(IoT)设备中收集运动和环境数据。 - **运动跟踪与手势识别**：用于游戏控制器、虚拟现实(VR)设备或智能家居设备中的用户交互。 - **步态检测与计数器**：计步器应用中，记录用户的行走步数和活动量。 LSM6DS3H是一款功能强大、低功耗且高度集成的六轴传感器，能够适应多种场景下的精确运动测量和姿态估测需求。

Embedded low-power features LSM6DS3H

16/108 DocID028370 Rev 5

2 Embedded low-power features

The LSM6DS3H has been designed to be fully compliant with Android, featuring the

following on-chip functions:

 8 kbyte data buffering

– 4 kbyte FIFO + flexible 4 kbyte (FIFO or programmable)

– 100% efficiency with flexible configurations and partitioning

– possibility to store timestamp

 Event-detection interrupts (fully configurable):

– free-fall

– wakeup

– 6D orientation

– tap and double-tap sensing

– activity / inactivity recognition

 Specific IP blocks with negligible power consumption and high-performance:

– pedometer functions: step detector and step counters

– tilt (Android compliant, refer to Section 2.1: Tilt detection for additional info

– significant motion (Android compliant)

 Sensor hub

– up to 6 total sensors: 2 internal (accelerometer and gyroscope) and 4 external

sensors

 Data rate synchronization with external trigger for reduced sensor access and enhanced

fusion

2.1 Tilt detection

The tilt function helps to detect activity change and has been implemented in hardware

using only the accelerometer to achieve both the targets of ultra-low power consumption

and robustness during the short duration of dynamic accelerations.

It is based on a trigger of an event each time the device's tilt changes by an angle greater

than 35 degrees from the start position.

The tilt function can be used with different scenarios, for example:

a) Trigger when phone is in a front pants pocket and the user goes from sitting to

standing or standing to sitting;

b) Doesn’t trigger when phone is in a front pants pocket and the user is walking,

running or going upstairs.

DocID028370 Rev 5 19/108

LSM6DS3H Pin description

108

Table 2. Pin description

Pin# Name Mode 1 function Mode 2 function Mode 3 function

1 SDO/SA0

SPI 4-wire interface serial

data output (SDO)

C least significant bit of the

device address (SA0)

SPI 4-wire interface serial data

output (SDO)

C least significant bit of the

device address (SA0)

SPI 4-wire interface serial

data output (SDO)

C least significant bit of the

device address (SA0)

2 SDx Connect to VDDIO or GND I

C serial data master (MSDA)

Auxiliary SPI 3-wire interface

serial data input (SDI_Aux)

and serial data output

(SDO_Aux)

3 SCx Connect to VDDIO or GND I

C serial clock master (MSCL)

Auxiliary SPI 3-wire interface

serial port clock (SPC_Aux)

4 INT1 Programmable interrupt 1

5 VDDIO

(1)

Power supply for I/O pins

6 GND 0 V supply

7 GND 0 V supply

8 VDD

(2)

Power supply

9 INT2

Programmable interrupt 2

(INT2)/ Data enable (DEN)

Programmable interrupt 2

(INT2)/ Data enable (DEN)/

C master external

synchronization signal

(MDRDY)

Programmable interrupt 2

(INT2)/ Data enable (DEN)

10 CS_Aux Leave unconnected

(3)

Leave unconnected

(3)

Auxiliary SPI 3-wire interface

enable

11 NC

(3)

Leave unconnected

12 CS

C/SPI mode selection

(1: SPI idle mode / I

communication enabled; 0:

SPI communication mode /

C disabled)

C/SPI mode selection

(1: SPI idle mode / I

communication enabled;

0: SPI communication mode /

C disabled)

C/SPI mode selection

(1: SPI idle mode / I

communication enabled;

0: SPI communication mode

C disabled)

13 SCL

C serial clock (SCL)

SPI serial port clock (SPC)

C serial clock (SCL)

SPI serial port clock (SPC)

C serial clock (SCL)

SPI serial port clock (SPC)

14 SDA

C serial data (SDA)

SPI serial data input (SDI)

3-wire interface serial data

output (SDO)

C serial data (SDA)

SPI serial data input (SDI)

3-wire interface serial data

output (SDO)

C serial data (SDA)

SPI serial data input (SDI)

3-wire interface serial data

output (SDO)

1. Recommended 100 nF filter capacitor.

2. Recommended 100 nF capacitor.

3. Leave pin electrically unconnected and soldered to PCB.

剩余107页未读，继续阅读

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