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STMicroelectronics LSM6DSLTR
- Part No.:
- LSM6DSLTR
- Manufacturer:
- STMicroelectronics
- Category:
- IMUs (Inertial Measurement Units)
- Package:
- 14-VFLGA Module
- Datasheet:
-
LSM6DSLTR.pdf
- Description:
- IMU ACCEL/GYRO I2C/SPI 14LGA
- Quantity:
- Payment:
- Shipping:
Inventory:18,009
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Product details
Overview
LSM6DSLTR from STMicroelectronics is a system-in-package inertial measurement unit (IMU) integrating a 3D digital accelerometer and 3D digital gyroscope. It delivers ±2/±4/±8/±16 g acceleration full-scale ranges and ±125/±250/±500/±1000/±2000 dps angular rate ranges, operates at 0.4 mA in combo normal mode and 0.65 mA in high-performance mode, and supports Android M–compliant embedded functions including pedometer, tilt detection, and significant motion recognition - enabling always-on motion sensing in wearable and handheld consumer devices.
For engineers reviewing the LSM6DSLTR datasheet, LSM6DSLTR pinout, LSM6DSLTR application, or LSM6DSLTR equivalent, this page provides verified technical context, validated pin-level circuit roles, confirmed low-power operating modes, and real-world use cases for motion tracking, indoor navigation, IoT sensor fusion, and intelligent power management in battery-constrained systems.
Technical Context
The LSM6DSLTR implements dual independent sensor cores with configurable ODRs (up to 6.7 kHz for accelerometer, 3.3 kHz for gyroscope), synchronized data output via hardware timestamping and main processor synchronization features. Its embedded FIFO (up to 4 kbyte) supports bypass, continuous, and FIFO modes with dynamic batching for OS-level virtual sensors.
It integrates hard/soft iron calibration registers for external magnetometer correction, an on-die temperature sensor (±3 °C accuracy), and programmable interrupts (free-fall, 6D orientation, click/double-click, wakeup). Power domains are split: analog supply (1.71–3.6 V) and independent IOVDD (1.62 V), enabling flexible host interface voltage matching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage (VDD) | 1.71 V to 3.6 V - supports direct connection to Li-ion/Li-poly battery rails or regulated 3.3 V/2.8 V supplies without level-shifting. |
| IO Supply (VDD_IO) | 1.62 V - enables interoperability with 1.8 V logic hosts while isolating IO noise from analog core. |
| Current Consumption | 0.4 mA (combo normal mode) - enables >1-month battery life in wearable devices sampling at 26 Hz with FIFO buffering. |
| FIFO Depth | 4 kbyte - stores ~1,300 16-bit XYZ samples per sensor, eliminating host polling and reducing MCU wake-ups. |
| Accelerometer FS Range | ±2/±4/±8/±16 g - selectable via register; ±2 g optimizes resolution (0.061 mg/LSB) for subtle gesture detection. |
| Gyroscope FS Range | ±125/±250/±500/±1000/±2000 dps - ±125 dps yields 4.375 mdps/LSB resolution for high-precision rotation tracking. |
| Interface | SPI (4-wire/3-wire) and I²C (standard/fast-mode plus) - dual-interface support simplifies integration across MCU families. |
Pinout & Package
LSM6DSLTR is housed in a 14-pin LGA package (2.5 mm × 3.0 mm × 0.83 mm), optimized for space-constrained portable designs. The land grid array exposes all terminals on the bottom surface with no leads, requiring controlled reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Analog power supply input | Connects to main system rail (1.71–3.6 V); decoupling capacitor required within 1 mm of pin. |
| VDD_IO | Digital I/O power supply | Supplies level-shifted logic for SPI/I²C interface; must be ≥1.62 V and stable during communication. |
| GND | Analog and digital ground reference | Single ground plane recommended; thermal pad (Pin 14) must be soldered to PCB ground for thermal and EMI performance. |
| SCL/SPC | I²C clock / SPI serial clock | Multiplexed pin: driven by host; internal pull-up not enabled - external 4.7 kΩ pull-up required for I²C. |
| SDA/SDI | I²C data / SPI data in | Multiplexed bidirectional pin; configured by interface selection; requires external pull-up only in I²C mode. |
| SDO/SA0 | I²C address select / SPI data out | Configures I²C slave address (0x6A or 0x6B); outputs SPI read data when selected as SDO. |
| INT1 | Programmable interrupt output #1 | Open-drain output; asserts on free-fall, tilt, step detection, or FIFO threshold - directly drives MCU GPIO. |
| INT2 | Programmable interrupt output #2 | Independent open-drain output; configurable for 6D orientation, significant motion, or sensor sync events. |
Key Features
| Feature | Design Value |
|---|---|
| Embedded pedometer & step counter | Hardware-accelerated counting with debounce and delta-step reporting - eliminates host CPU load and reduces firmware complexity. |
| Smart FIFO with batch mode | 4 kbyte buffer with auto-ODR synchronization - enables Android Sensor HAL virtual sensor implementation without host intervention. |
| Wrist tilt and absolute tilt detection | On-chip tilt angle estimation using accelerometer data - delivers ready-to-use wrist-up/wrist-down status for UI activation. |
| Hard/soft iron calibration registers | 12-byte matrix + 6-byte offset storage - allows host MCU to apply real-time magnetic distortion compensation when paired with external magnetometers. |
| Android M compliance | Fully implements Android sensor HAL requirements for accelerometer, gyroscope, step detector, and significant motion - certified for AOSP integration. |
Applications
| Wearable Fitness Tracker | Smartphone Motion Sensing |
|---|---|
Use Scenario: Continuous step counting and activity classification during multi-day wear. IC Role / Device Role / Timing Role: Primary motion sensor providing time-synchronized accel/gyro data streams to application processor. Use Value: 0.4 mA combo mode extends battery life beyond 7 days; embedded step counter offloads CPU and ensures accurate counts even during screen-off states. |
Use Scenario: Screen rotation, shake-to-undo, and gaming motion control in smartphones. IC Role / Device Role / Timing Role: System-level inertial sensor feeding Android SensorManager with calibrated, timestamped data. Use Value: 6D orientation interrupt (INT1) triggers instantaneous UI response; 4 kbyte FIFO buffers burst gestures without packet loss. |
| Indoor Navigation Beacon | IoT Vibration Monitor |
Use Scenario: Pedestrian dead reckoning in GPS-denied environments (e.g., malls, airports). IC Role / Device Role / Timing Role: High-accuracy motion engine delivering fused accel/gyro data to Kalman filter on host MCU. Use Value: ±125 dps gyroscope range minimizes quantization error in slow-turn scenarios; hardware timestamping aligns sensor data across axes. |
Use Scenario: Predictive maintenance on industrial pumps and HVAC fans. IC Role / Device Role / Timing Role: Edge sensor capturing vibration spectra and triggering alerts on amplitude thresholds. Use Value: Free-fall and wakeup interrupts enable ultra-low-power listening mode; ±16 g accelerometer range captures high-frequency mechanical shocks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar inertial measurement unit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LSM6DSOXTR | Includes embedded machine learning core (FSM) and higher FIFO (9 kbyte); 0.55 mA typical current in combo mode. | Required for on-sensor AI gesture classification; over-spec for basic step/tilt use cases. | Select LSM6DSOXTR only if firmware-defined finite state machines or advanced pattern recognition are needed. |
| ICM-20689 | Higher noise density (40 µg/√Hz vs. 70 µg/√Hz accel); no embedded pedometer; 3.3 V only IO supply. | Lacks Android M–compliant embedded functions; requires host-side motion processing stack. | Choose ICM-20689 only when cost sensitivity outweighs firmware development effort and power budget permits. |
Compared with LSM6DSOXTR, the LSM6DSLTR trades ML capability for lower BOM cost and simpler firmware; versus ICM-20689, it delivers turnkey Android integration and 30% lower active current, making it optimal for production-ready consumer wearables.
Availability
LSM6DSLTR is available at Aetrix Electronics and suitable for wearable fitness trackers, smartphone motion sensing, indoor navigation beacons, and IoT vibration monitors requiring stable component supply across high-volume consumer electronics programs.
Supply support for LSM6DSLTR 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 manufacturing facilities certified to ISO 9001 and IATF 16949 standards.
The LSM6DSLTR belongs to ST's iNEMO inertial module family, designed specifically for always-on, low-power motion sensing in battery-operated consumer devices - balancing precision, integration, and energy efficiency.
FAQ
What is the maximum output data rate (ODR) supported by the LSM6DSLTR accelerometer and gyroscope?
The LSM6DSLTR supports up to 6.7 kHz for the accelerometer and 3.3 kHz for the gyroscope in high-performance mode. These rates are achievable simultaneously with hardware synchronization and timestamping, enabling high-fidelity motion capture for gaming or AR/VR applications without data skew between axes.
Does the LSM6DSLTR require external components for basic operation?
Yes - a 100 nF ceramic decoupling capacitor is required on VDD within 1 mm of the pin, and a 4.7 kΩ pull-up resistor is needed on SCL/SDA for I²C operation. The thermal pad (Pin 14) must be soldered to a solid PCB ground plane for thermal dissipation and noise immunity.
How does the LSM6DSLTR handle sensor fusion with an external magnetometer?
It provides dedicated hard/soft iron calibration registers (MAG_SI_XX through MAG_SI_ZZ and MAG_OFFX_L/H etc.) to store 3×3 sensitivity matrix and 3-axis offset values. Host firmware writes these coefficients, and the LSM6DSLTR applies them to raw magnetometer data read via its master I²C interface - enabling real-time distortion compensation.
Is the LSM6DSLTR pin-compatible with other ST iNEMO modules like the LSM6DSL?
Yes - the LSM6DSLTR is a tape-and-reel variant of the LSM6DSL in identical LGA-14 packaging with identical pinout, electrical characteristics, and register map. The 'TR' suffix denotes tape-and-reel packaging only; no functional or timing differences exist between LSM6DSL and LSM6DSLTR.
LSM6DSLTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- 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
LSM6DSLTR FAQ
1.How can I place an order for LSM6DSLTR through Aetrix?
Please submit a Request for Quotation (RFQ) for LSM6DSLTR 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 LSM6DSLTR reliable?
The price and inventory of LSM6DSLTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LSM6DSLTR is usually 5 days.
3.What payment methods are accepted for LSM6DSLTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LSM6DSLTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LSM6DSLTR?
LSM6DSLTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LSM6DSLTR 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 LSM6DSLTR?
For technical support, including LSM6DSLTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LSM6DSLTR requirements.
6.How does Aetrix verify that LSM6DSLTR is sourced from the original manufacturer or authorized distributors?
All LSM6DSLTR 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 LSM6DSLTR meets industry standards.
7.What is the process for return or replacement of LSM6DSLTR?
All LSM6DSLTR units undergo pre-shipment inspection (PSI). If there is an issue with LSM6DSLTR, 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 LSM6DSLTR part is unused and in its original packaging.
Return procedure for LSM6DSLTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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