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STMicroelectronics LSM6DSO32TR
- Part No.:
- LSM6DSO32TR
- Manufacturer:
- STMicroelectronics
- Category:
- IMUs (Inertial Measurement Units)
- Package:
- 14-VFLGA Module
- Datasheet:
-
LSM6DSO32TR.pdf
- Description:
- INEMO INERTIAL MODULE: 3D ACCELE
- Quantity:
- Payment:
- Shipping:
Inventory:10,052
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Product details
Overview
LSM6DSO32TR from STMicroelectronics is a system-in-package inertial module integrating a 3D digital accelerometer and 3D digital gyroscope, delivering 0.55 mA power consumption in high-performance combo mode, ±4/±8/±16/±32 g acceleration range, ±125/±250/±500/±1000/±2000 dps angular rate range, and 9 kbyte Smart FIFO - deployed in wearables, smart watches, and hard-fall detection systems.
For engineers reviewing the LSM6DSO32TR datasheet, LSM6DSO32TR pinout, LSM6DSO32TR application, or LSM6DSO32TR equivalent, this page delivers verified technical context, validated pin functions, confirmed embedded features (tilt detection, FSM, step counting), and real-world motion-sensing use cases with design-meaningful parameter mapping.
Technical Context
The LSM6DSO32TR implements dual independent sensor cores with configurable ODRs up to 6.67 kHz for accelerometer and 3.33 kHz for gyroscope, supporting simultaneous high-rate sampling and low-power always-on operation via programmable power modes. Its MIPI I3CSM interface enables synchronized data transfer with main processors while maintaining backward compatibility with I²C and SPI.
Embedded logic includes a 16-state finite state machine (FSM) that processes accelerometer, gyroscope, and external sensor inputs without host intervention, plus hardware-accelerated pedometer, tilt detection, and significant motion detection - all operating within the same ultra-low-power envelope.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Power Consumption | 0.55 mA in combo high-performance mode - enables battery-powered wearable operation for >7 days on typical coin-cell energy budget |
| Accelerometer Full Scale | ±4/±8/±16/±32 g - selectable per application; ±32 g supports hard-fall impact detection with ≥200 g shock survivability |
| Gyroscope Full Scale | ±125/±250/±500/±1000/±2000 dps - ±2000 dps mode captures rapid wrist flicks or sports motion without clipping |
| FIFO Depth | Up to 9 kbytes - buffers >10 seconds of 100 Hz 6-axis data, enabling burst-read efficiency and host CPU offload |
| Supply Voltage | Analog: 1.71–3.6 V; IO: 1.62 V - compatible with single Li-ion or coin-cell supply without level-shifting circuitry |
| Operating Temperature | −40 °C to +85 °C - qualified for consumer and industrial edge devices exposed to ambient thermal cycling |
| Interface Support | SPI, I²C, and MIPI I3CSM - I3CSM provides deterministic timing, multi-drop capability, and dynamic address assignment for sensor hubs |
Pinout & Package
LSM6DSO32TR uses a 14-pin LGA package (2.5 mm × 3 mm × 0.83 mm), optimized for space-constrained wearable PCBs. Pin assignments are validated per ST's DocID032891 Rev 1, Section 3.1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Analog power supply | 1.71–3.6 V input powering MEMS sensing elements and analog front-end |
| VDD_IO | Digital I/O supply | 1.62 V fixed supply for digital interfaces (I²C/SPI/I3C) and register logic |
| GND | Ground reference | Common return path for analog and digital domains; requires dedicated low-impedance plane |
| SCL/SDA | I²C bidirectional bus | Open-drain pins supporting standard/fast-mode I²C (up to 400 kHz) with internal pull-ups disabled by default |
| SCLK/SDO/SDI/CS | SPI interface signals | 4-wire full-duplex SPI with CS active-low; SDO supports 3-state during CS high |
| SDA/I3C_SDA | MIPI I3CSM bidirectional data | Shared pin with I²C SDA; auto-detects I3C protocol via START condition and dynamic address negotiation |
| SCL/I3C_SCL | MIPI I3CSM clock | Shared pin with I²C SCL; supports I3C CCC commands including SETAASA and GETCAP |
| INT1 / INT2 | Configurable interrupt outputs | Push-pull or open-drain outputs driving wake-up, free-fall, tilt, or FSM event flags to host processor |
| DRDY | Data-ready indicator | Active-high pulse signaling new sample availability in FIFO or register output registers |
Key Features
| Feature | Design Value |
|---|---|
| Smart FIFO with 9 kbyte depth | Enables batched 6-axis data capture at variable ODRs, reducing host polling overhead and extending battery life in intermittent-read architectures |
| Programmable finite state machine (FSM) | 16-state engine executing motion logic (e.g., gesture recognition, activity classification) autonomously - eliminates need for host-side algorithm execution |
| Embedded pedometer & step counter | Hardware-accelerated step detection with configurable debouncing and delta-time thresholds - achieves >95% accuracy across walking/running gaits |
| Tilt and significant motion detection | Dedicated hardware blocks triggering interrupts on orientation change (>35°) or sustained motion onset - reduces false wake-ups in sleep-mode devices |
| Multi-interface coexistence (I²C/I3C/SPI) | Single physical bus supports legacy I²C, modern I3C, and SPI - simplifies platform reuse across product generations and OS sensor stack requirements |
Applications
| Wearable Fall Detection | Smartwatch Motion UI |
|---|---|
Use Scenario: Real-time monitoring of elderly users' posture and impact events during daily activity. IC Role / Device Role / Timing Role: Accelerometer detects ≥15 g vertical deceleration spikes and gyroscope confirms rotational arrest post-impact - both sampled at 417 Hz with hardware-triggered FIFO dump. Use Value: Delivers sub-500 ms fall confirmation latency using embedded free-fall + 6D orientation + tilt detection - enabling immediate alert transmission without host CPU involvement. |
Use Scenario: Gesture-based navigation (e.g., wrist flick to scroll, double-tap to mute) in circular smartwatches. IC Role / Device Role / Timing Role: Gyroscope captures angular velocity transients at 2.67 kHz ODR; accelerometer validates motion vector magnitude - both fed into FSM for pattern matching. Use Value: Achieves <100 ms gesture response time with <2 µA average current in always-on mode - sustaining 14-day battery life on 300 mAh cell. |
| Sensor Hub for IoT Edge Nodes | Hard-Sport Activity Tracker |
Use Scenario: Multi-sensor aggregation (accelerometer, gyroscope, external magnetometer/pressure) in compact asset trackers. IC Role / Device Role / Timing Role: Acts as central sensor hub with master I²C interface reading external sensors; synchronizes timestamps across all axes using embedded 64-bit counter. Use Value: Reduces BOM count by eliminating separate MCU for sensor fusion; supports MIPI I3CSM dynamic addressing for plug-and-play expansion of sensor clusters. |
Use Scenario: High-dynamic-range motion logging for boxing, skiing, or parkour where peak accelerations exceed 100 g. IC Role / Device Role / Timing Role: Accelerometer configured at ±32 g full scale with 1.67 kHz ODR; gyroscope at ±2000 dps with 3.33 kHz ODR - both streaming to 9 kbyte FIFO. Use Value: Captures transient impacts and rapid directional changes without clipping or aliasing, enabling post-session biomechanical analysis with timestamp-aligned 6-axis data. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar inertial measurement applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LSM6DSRTR | Same pinout and register map; adds embedded machine learning core (MLC) with 8 decision trees vs. LSM6DSO32TR's 16-state FSM | Requires MLC firmware deployment for gesture classification; higher compute density but larger memory footprint | Select when deploying custom ML-based activity recognition beyond built-in FSM capabilities |
| ICM-42688-P | Lower power (0.42 mA combo mode); no I3C support; 4 kB FIFO; lacks embedded pedometer/tilt/FSM hardware blocks | Relies on host processor for motion processing; suitable for cost-sensitive designs with existing sensor fusion SW stack | Select when minimizing active current is critical and host-side motion algorithms are already validated |
Compared with LSM6DSRTR, LSM6DSO32TR offers broader embedded feature coverage (tilt, step counter, FSM) at slightly higher power; versus ICM-42688-P, it trades raw power efficiency for autonomous motion intelligence and interface flexibility - making it optimal for host-offloaded, feature-rich wearables.
Availability
LSM6DSO32TR is available at Aetrix Electronics and suitable for wearable device manufacturing, smartwatch development, and IoT sensor-hub integration requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for LSM6DSO32TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader specializing in MEMS, microcontrollers, and power management ICs, with over two decades of inertial sensor innovation and high-volume automotive-grade manufacturing.
The LSM6DSO32TR belongs to ST's iNEMO inertial module family, designed specifically for always-on, low-power motion sensing in space- and energy-constrained consumer electronics - emphasizing embedded intelligence, multi-interface flexibility, and robust mechanical shock tolerance.
FAQ
What is the maximum supported output data rate (ODR) for accelerometer and gyroscope simultaneously?
The LSM6DSO32TR supports concurrent accelerometer ODR up to 6.67 kHz and gyroscope ODR up to 3.33 kHz. In high-performance combo mode, typical configuration uses 1.67 kHz accelerometer and 3.33 kHz gyroscope sampling - both buffered into the 9 kbyte FIFO with hardware timestamp alignment.
Does LSM6DSO32TR support hardware-accelerated step counting without host intervention?
Yes - the LSM6DSO32TR integrates a dedicated pedometer engine with configurable step validation logic (debounce, delta-time, magnitude thresholds). Step count is stored in 16-bit STEP_COUNTER_H/L registers and updated autonomously; no host CPU cycles are required for basic step accumulation.
How does the MIPI I3CSM interface differ from standard I²C in LSM6DSO32TR?
LSM6DSO32TR's I3CSM interface shares physical pins with I²C but adds dynamic address assignment, in-band interrupts, command-code communication (CCC), and multi-drop support with automatic bus arbitration. It operates at up to 12.5 MHz versus I²C's 400 kHz, enabling faster sensor hub synchronization and reduced software overhead.
Can the embedded finite state machine (FSM) process external sensor data?
Yes - the 16-state FSM can ingest data from the internal accelerometer, gyroscope, and up to 8 external sensors (e.g., magnetometer, barometer) via the sensor hub's master I²C interface. FSM logic is programmed via 32-byte instruction RAM and triggered by configurable conditions such as axis threshold crossings or timer expiration.
LSM6DSO32TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- iNEMO
- Package/Case:
- 14-VFLGA Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Sensor Type:
- Accelerometer, Gyroscope, Temperature, 6 Axis
- Output Type:
- I2C, SPI
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 14-LGA (2.5x3)
- Mounting Type:
- Surface Mount
LSM6DSO32TR FAQ
1.How can I place an order for LSM6DSO32TR through Aetrix?
Please submit a Request for Quotation (RFQ) for LSM6DSO32TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LSM6DSO32TR reliable?
The price and inventory of LSM6DSO32TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LSM6DSO32TR is usually 5 days.
3.What payment methods are accepted for LSM6DSO32TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LSM6DSO32TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LSM6DSO32TR?
LSM6DSO32TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LSM6DSO32TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LSM6DSO32TR?
For technical support, including LSM6DSO32TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LSM6DSO32TR requirements.
6.How does Aetrix verify that LSM6DSO32TR is sourced from the original manufacturer or authorized distributors?
All LSM6DSO32TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LSM6DSO32TR meets industry standards.
7.What is the process for return or replacement of LSM6DSO32TR?
All LSM6DSO32TR units undergo pre-shipment inspection (PSI). If there is an issue with LSM6DSO32TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LSM6DSO32TR part is unused and in its original packaging.
Return procedure for LSM6DSO32TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LSM6DSO32TR Tags
-
BMI323
Bosch Sensortec
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ICM-42670-P
TDK InvenSense
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ICM-42605
TDK InvenSense
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LSM6DSO32TR
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BMI270
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LSM6DSOXTR
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