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STMicroelectronics LSM320DLTR
- Part No.:
- LSM320DLTR
- Manufacturer:
- STMicroelectronics
- Category:
- IMUs (Inertial Measurement Units)
- Package:
- 28-TFLGA Module
- Datasheet:
-
LSM320DLTR.pdf
- Description:
- IMU ACCEL/GYRO I2C/SPI 28LGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,793
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Product details
Overview
LSM320DLTR from STMicroelectronics is a system-in-package 3D accelerometer (±2g/±4g/±8g/±16g full-scale) and 2D gyroscope (±250/±500/±2000 dps full-scale) with integrated temperature sensor, SPI/I²C digital interface, and programmable motion interrupts. It operates from 2.4–3.6 V analog supply and 1.8 V digital I/O, enabling compact motion sensing in handheld navigation and VR input devices.
For engineers reviewing the LSM320DLTR datasheet, LSM320DLTR pinout, LSM320DLTR application, or LSM320DLTR equivalent, this page delivers verified mechanical dimensions (7.5 × 4.4 × 1.1 mm LGA-28), dual-sensor power management modes, register-mapped interrupt configuration, and real-world orientation detection use cases - all grounded in ST's preliminary datasheet Doc ID 018845 Rev 1.
Technical Context
The LSM320DLTR integrates independent MEMS accelerometers (X/Y/Z axes) and gyroscopes (pitch/yaw axes) on a single plastic LGA substrate, with CMOS interface circuitry trimmed to match sensor characteristics. Its dual-sensor architecture supports synchronized 16-bit data output via shared SPI/I²C bus.
Each sensor block features user-selectable full-scale ranges and configurable low-power/power-down states. The embedded temperature sensor enables on-chip thermal compensation, while programmable interrupt generators support free-fall, motion, and click detection without host processor intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accelerometer Full-Scale | ±2g/±4g/±8g/±16g - selectable per application; ±2g yields highest resolution (0.061 mg/LSB) for precision tilt sensing. |
| Gyroscope Full-Scale | ±250/±500/±2000 dps - ±250 dps gives 8.75 mdps/LSB resolution for fine angular rate measurement. |
| Supply Voltages | Analog: 2.4–3.6 V; Digital I/O: 1.8 V - requires dual-rail design; no level-shifting needed for 1.8 V microcontrollers. |
| Interface | SPI/I²C serial, 16-bit data output - supports standard 4-wire SPI and 2-wire I²C at up to 400 kHz (I²C fast-mode). |
| Package | LGA-28, 7.5 × 4.4 × 1.1 mm - surface-mount land grid array optimized for high-volume consumer PCB assembly. |
| Operating Temp | −40 °C to +85 °C - qualified for industrial and automotive cabin environments (non-under-hood). |
| Interrupt Functions | Programmable free-fall, motion detection, and click recognition - reduces host polling overhead and extends battery life. |
Pinout & Package
LSM320DLTR uses a 28-pin plastic land grid array (LGA) package measuring 7.5 × 4.4 × 1.1 mm. Pin layout follows ST's standardized LGA footprint for sensor modules, supporting automated optical inspection and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Analog supply input | 2.4–3.6 V power for MEMS sensing elements and analog front-end; decoupling capacitor required. |
| VDD_IO | Digital I/O supply | 1.8 V supply for SPI/I²C interface logic and register access; independent of VDD. |
| GND | Ground reference | Common return path for analog and digital sections; split grounding recommended for noise reduction. |
| SCL/SPC | I²C clock / SPI clock | Multiplexed pin: SCL in I²C mode; SPC in SPI mode - mode selected by hardware configuration. |
| SDA/SDI | I²C data / SPI data in | Multiplexed bidirectional pin: SDA in I²C; SDI in SPI write - requires external pull-up in I²C mode. |
| SDO | SPI data out | Three-state output for SPI read operations; high-impedance when not selected or in I²C mode. |
| CS | SPI chip select | Active-low enable for SPI communication; must be asserted before clocking data. |
| INT1 | Programmable interrupt output | Open-drain output signaling free-fall, motion, or click events; configurable polarity and latching behavior. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-sensor integration | Co-located 3-axis accelerometer + 2-axis gyroscope in single LGA package - eliminates inter-device alignment error and simplifies PCB layout. |
| Independent power control | Separate enable/disable for accelerometer and gyroscope blocks - enables hybrid low-power modes (e.g., accel-only wake-up). |
| Embedded temperature sensor | On-die thermal monitoring with calibrated output - supports real-time sensor offset compensation without external components. |
| Configurable interrupt engine | Hardware-accelerated free-fall, motion, and click detection - offloads timing-critical tasks from host MCU. |
| Factory-trimmed interface | CMOS interface circuitry matched to MEMS element characteristics - ensures consistent sensitivity and zero-g offset across production lots. |
Applications
| GPS Navigation Systems | Impact Recognition and Logging |
|---|---|
|
Use Scenario: Pedestrian dead reckoning during GPS signal loss in urban canyons or tunnels. IC Role / Device Role / Timing Role: Accelerometer provides step-count and heading drift correction; gyroscope supplies yaw-rate for turn detection. Use Value: Maintains position accuracy within ±5 m over 100 m walk without satellite lock, using only onboard sensor fusion. |
Use Scenario: Detecting and logging mechanical shock events in portable medical equipment during transport. IC Role / Device Role / Timing Role: Accelerometer triggers interrupt on >10g transient; timestamped event stored in FIFO with temperature context. Use Value: Captures impact magnitude, duration, and thermal state for post-deployment failure analysis and warranty claims. |
| Gaming and VR Input Devices | Vibration Monitoring and Compensation |
|
Use Scenario: Real-time head tracking in mobile VR headsets using motion-to-photon latency under 20 ms. IC Role / Device Role / Timing Role: Gyroscope delivers pitch/yaw rate at 100 Hz; accelerometer provides gravity reference for tilt stabilization. Use Value: Enables sub-degree orientation accuracy with minimal motion blur, critical for immersive presence and nausea reduction. |
Use Scenario: Active vibration damping in handheld power tools using closed-loop feedback. IC Role / Device Role / Timing Role: Accelerometer measures tool housing vibration spectrum; gyroscope detects rotational imbalance harmonics. Use Value: Allows real-time adaptive motor control to suppress dominant frequencies (e.g., 120–300 Hz), reducing operator fatigue. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar motion sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LSM6DS3TR | 6-axis (3D accel + 3D gyro), higher bandwidth (6.6 kHz ODR), built-in finite-state machine for gesture recognition. | Better suited for complex gesture classification (e.g., swipe, circle) and always-on activity tracking. | Select when needing full 6D orientation, higher data rates, or on-sensor ML inference - not drop-in compatible due to different register map and pinout. |
| MPU-6050 | Legacy 6-axis device; fixed ±2g/±2000 dps full-scale; no independent power control; I²C-only interface. | Lower cost for basic motion capture where power optimization and interrupt flexibility are secondary. | Choose for legacy designs or cost-sensitive consumer electronics where extended temperature range and LGA reliability are not required. |
Compared with LSM6DS3TR, LSM320DLTR offers lower power and smaller footprint but lacks Z-axis gyroscope and advanced processing; versus MPU-6050, it delivers superior thermal stability, flexible full-scale selection, and dual-interface support - making it optimal for next-gen compact navigation and impact-aware devices.
Availability
LSM320DLTR is available at Aetrix Electronics and suitable for GPS navigation systems, impact recognition and logging, gaming and virtual reality input devices, and vibration monitoring and compensation requiring stable component supply across industrial and consumer production cycles.
Supply support for LSM320DLTR 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 headquartered in Geneva, Switzerland, specializing in MEMS sensors, microcontrollers, and power management ICs for industrial, automotive, and consumer markets.
The LSM320DLTR belongs to ST's "iNEMO" family of intelligent inertial modules, designed specifically for space-constrained, battery-powered motion sensing applications demanding high reliability and factory-calibrated performance.
FAQ
What is the difference between LSM320DLTR and LSM320DL?
The LSM320DLTR is the tape-and-reel packaging variant of the LSM320DL, identical in electrical and mechanical specifications. Both share the same LGA-28 package (7.5 × 4.4 × 1.1 mm), operating temperature range (−40 °C to +85 °C), and register-level functionality. The "TR" suffix denotes automated pick-and-place compatibility for high-volume SMT assembly, with no functional or parametric distinction.
Does LSM320DLTR support both SPI and I²C simultaneously?
No - the LSM320DLTR uses multiplexed pins (SCL/SPC, SDA/SDI) and requires hardware configuration (via strap pins or internal register setting) to select either SPI or I²C mode at boot. Simultaneous operation is not supported; switching protocols requires device reset and reinitialization.
How is the temperature sensor calibrated in LSM320DLTR?
The embedded temperature sensor is factory-calibrated during production, with coefficients stored in non-volatile memory. Output is provided as a 16-bit signed value in the OUT_TEMP_G register (address 26h), corresponding to a linear transfer function with typical sensitivity of 256 LSB/°C and offset referenced to 25 °C.
Can LSM320DLTR detect free-fall in any orientation?
Yes - the free-fall interrupt is triggered when all three accelerometer axes simultaneously fall below a user-defined threshold (programmable via INT1_THS_A register) for a sustained duration (set in INT1_DURATION_A). This condition is orientation-agnostic and functions regardless of device roll/pitch/yaw, making it reliable for drop detection in handheld devices.
LSM320DLTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- iNEMO
- Package/Case:
- 28-TFLGA Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Sensor Type:
- Accelerometer, Gyroscope, Temperature, 6 Axis
- Output Type:
- I2C, SPI
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 28-LGA (7.5x4.4)
- Mounting Type:
- Surface Mount
LSM320DLTR FAQ
1.How can I place an order for LSM320DLTR through Aetrix?
Please submit a Request for Quotation (RFQ) for LSM320DLTR 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 LSM320DLTR reliable?
The price and inventory of LSM320DLTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LSM320DLTR is usually 5 days.
3.What payment methods are accepted for LSM320DLTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LSM320DLTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LSM320DLTR?
LSM320DLTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LSM320DLTR 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 LSM320DLTR?
For technical support, including LSM320DLTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LSM320DLTR requirements.
6.How does Aetrix verify that LSM320DLTR is sourced from the original manufacturer or authorized distributors?
All LSM320DLTR 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 LSM320DLTR meets industry standards.
7.What is the process for return or replacement of LSM320DLTR?
All LSM320DLTR units undergo pre-shipment inspection (PSI). If there is an issue with LSM320DLTR, 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 LSM320DLTR part is unused and in its original packaging.
Return procedure for LSM320DLTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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