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STMicroelectronics LIS331DLH
- Part No.:
- LIS331DLH
- Manufacturer:
- STMicroelectronics
- Category:
- Accelerometers
- Package:
- 16-VFLGA
- Datasheet:
-
LIS331DLH.pdf
- Description:
- ACCELEROMETER 2-8G I2C/SPI 16LGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,957
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Product details
Overview
LIS331DLH from STMicroelectronics is an ultra-low-power, high-performance 3-axis MEMS digital accelerometer in the "nano" family, delivering 16-bit I²C/SPI output with dynamically selectable ±2g/±4g/±8g full-scale ranges. It features two programmable interrupt generators for free-fall/motion detection, 6D orientation sensing, and sleep-to-wake functionality - enabling motion-activated power management in battery-constrained portable electronics.
For engineers reviewing the LIS331DLH datasheet, LIS331DLH pinout, LIS331DLH application, or LIS331DLH equivalent, key selection criteria include its 10 µA low-power mode current, 0.5 Hz–1 kHz configurable output data rate, 10000 g shock survivability, and dual-interrupt architecture supporting inertial event triggering without host processor intervention.
Technical Context
The LIS331DLH integrates a capacitive MEMS sensing element with a low-noise analog front-end, 12-bit ADC (with 16-bit output formatting), and digital signal processing logic including high-pass filtering, self-test control, and interrupt state machines. Its dual interrupt outputs (INT1, INT2) are independently configurable for threshold-based events (e.g., free-fall, motion, 6D position) with user-defined duration and sensitivity.
It supports both I²C (standard/fast-mode up to 400 kHz) and SPI (4-wire or 3-wire, up to 10 MHz) interfaces, with pin-multiplexed SDA/SDI/SDO and SCL/SPC lines. The device operates across -40 °C to +85 °C and maintains factory-calibrated offset and sensitivity over temperature via built-in trimming circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 2.16 V to 3.6 V - enables direct integration with Li-ion battery-powered systems and 3.3 V logic rails. |
| Low-power mode current | 10 µA - extends battery life in always-on motion-detection applications such as pedometers and display rotation. |
| Full-scale range | ±2g / ±4g / ±8g (dynamically selectable) - allows runtime optimization of resolution vs. dynamic range for varying use cases. |
| Output data rate | 0.5 Hz to 1 kHz - supports both ultra-low-power wake-up monitoring and real-time gesture recognition. |
| Interface support | I²C and SPI (4- or 3-wire) - provides flexibility for host MCU interface compatibility without external level-shifting. |
| Shock survivability | 10000 g - ensures robustness during drop testing and mechanical stress in handheld consumer devices. |
| Operating temperature | -40 °C to +85 °C - qualified for industrial and automotive cabin environments without derating. |
Pinout & Package
LGA-16 package (3 mm × 3 mm × 1 mm), land grid array with exposed pad for thermal and electrical grounding. Pin 1 marked by dot; bottom-side ground pads (Pins 2, 3, 10, 12, 13, 16) and power pins (Pins 1, 5, 14) ensure stable supply decoupling and EMI resilience.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 Vdd_IO | I/O power supply | Separate 1.8 V rail for digital interface - isolates I/O noise from analog measurement chain. |
| 4 SCL/SPC | Clock input | Multiplexed I²C clock (SCL) or SPI clock (SPC) - enables shared PCB routing for dual-interface flexibility. |
| 6 SDA/SDI/SDO | Data bidirectional/in/out | Tri-state I²C data (SDA), SPI input (SDI), or SPI output (SDO) - reduces pin count while preserving protocol integrity. |
| 7 SDO/SA0 | Data output / address LSB | SPI data output or I²C device address bit (SA0) - eliminates need for external pull-up/down resistors in I²C configuration. |
| 8 CS | Interface mode select | High = I²C mode; Low = SPI mode - hardware-selectable interface avoids software configuration errors at boot. |
| 9 & 11 INT2 / INT1 | Programmable interrupt outputs | Dedicated open-drain outputs for asynchronous event signaling - offloads timing-critical detection from host MCU. |
| 14 Vdd | Analog & core supply | Main 2.16–3.6 V supply for MEMS sensor and signal chain - independent of Vdd_IO for optimal SNR. |
Key Features
| Feature | Design Value |
|---|---|
| 6D orientation detection | Real-time tilt/orientation classification using three-axis acceleration thresholds - enables automatic screen rotation without gyroscope fusion. |
| Embedded self-test | Electrostatic actuation verifies MEMS element and signal path integrity in-system - eliminates need for external test fixtures during production or field calibration. |
| Sleep-to-wake function | Automatic transition from 1 µA power-down to active measurement upon inertial trigger - reduces average system current by >99% during idle periods. |
| Two independent interrupt generators | Separate configuration registers (INT1_CFG, INT2_CFG) allow concurrent free-fall detection on one channel and motion wake-up on the other - supports multi-condition event handling. |
| High shock survivability | 10000 g rating validated per MIL-STD-883H Method 2002 - ensures functional reliability after mechanical impact in portable and wearable devices. |
Applications
| Smartphone Display Rotation | Pedometer Activity Monitoring |
|---|---|
|
Use Scenario: Automatic portrait/landscape switching based on device tilt angle. IC Role / Device Role / Timing Role: Primary orientation sensor providing real-time 3-axis acceleration data at 50–100 Hz ODR with 6D detection logic. Use Value: Enables seamless UI adaptation without CPU polling, leveraging hardware-accelerated interrupt-driven orientation change detection. |
Use Scenario: Step counting and activity classification in fitness trackers. IC Role / Device Role / Timing Role: Low-power motion detector operating in 1–5 Hz ODR mode with motion-interrupt wake-up to initiate step algorithm execution. Use Value: Achieves multi-day battery life by maintaining 10 µA standby current and activating only on validated step-triggering acceleration profiles. |
| Free-Fall Protection in HDDs | Gaming Motion Input |
|
Use Scenario: Emergency head retraction when laptop detects drop impact. IC Role / Device Role / Timing Role: Dedicated free-fall detector generating INT1 signal within <10 ms of onset, using ±2g range and programmable duration filter. Use Value: Provides deterministic, sub-20 ms response time to protect storage media - independent of host OS latency or driver stack delays. |
Use Scenario: Tilt-based steering and gesture control in VR controllers. IC Role / Device Role / Timing Role: High-bandwidth (1 kHz ODR) motion capture sensor feeding real-time orientation data to motion fusion algorithms. Use Value: Delivers low-latency (<2 ms group delay) acceleration data with 16-bit resolution - critical for immersive, jitter-free motion tracking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-axis MEMS accelerometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LSM303DLHC | Integrated 3-axis accelerometer + 3-axis magnetometer in single LGA-16 package; higher current (280 µA normal mode); no dedicated 6D detection logic. | Targeted at e-compass and heading estimation; lacks standalone free-fall interrupt precision and low-power 0.5 Hz ODR mode. | Select when magnetic field sensing is required alongside motion; avoid if pure low-power inertial wake-up is primary requirement. |
| ADXL345 | 13-bit resolution; I²C/SPI; 40 µA low-power mode; no embedded 6D orientation engine; requires external logic for tilt detection. | Used in industrial vibration monitoring where extended temperature range (-40 °C to +105 °C) and shock rating (10000 g) match, but lacks integrated motion-state machine. | Prefer for legacy designs with ADI ecosystem compatibility; choose LIS331DLH when hardware-accelerated 6D and dual-interrupt autonomy reduce firmware complexity. |
Compared with LSM303DLHC and ADXL345, the LIS331DLH uniquely combines ultra-low 10 µA standby current, on-device 6D orientation classification, and dual independent interrupt generators - reducing host MCU processing load and system-level power consumption in portable motion-aware devices.
Availability
LIS331DLH is available at Aetrix Electronics and suitable for smartphone display rotation, pedometer activity monitoring, free-fall protection in HDDs, and gaming motion input requiring stable component supply across high-volume consumer electronics programs.
Supply support for LIS331DLH 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, designing and manufacturing microcontrollers, sensors, power ICs, and analog components for industrial, automotive, and consumer markets.
The LIS331DLH belongs to ST's "nano" family of ultra-low-power MEMS motion sensors, engineered specifically for battery-operated portable devices demanding high accuracy, minimal quiescent current, and intelligent on-sensor event processing.
FAQ
What is the minimum output data rate supported in low-power mode?
The LIS331DLH supports a minimum output data rate of 0.5 Hz in low-power mode (PM bits = 010), enabling ultra-low-energy periodic wake-up for motion presence detection. This mode maintains full interrupt functionality and 6D orientation capability while drawing only 10 µA, making it ideal for multi-week battery operation in IoT endpoints.
How does the self-test function verify sensor integrity?
The LIS331DLH's embedded self-test applies electrostatic force to the MEMS proof mass, inducing a known acceleration step. The resulting output shift (e.g., 120–550 LSB on X/Y/Z axes at ±2g range) is compared against expected values in firmware - confirming mechanical integrity, signal chain gain, and ADC linearity without external equipment.
Can INT1 and INT2 be configured for different event types simultaneously?
Yes - INT1 and INT2 are fully independent. INT1_CFG and INT2_CFG registers allow separate configuration of event sources (free-fall, motion, 6D position), thresholds, and duration filters. For example, INT1 can signal free-fall while INT2 triggers on 6D orientation change - enabling parallel, non-blocking inertial event handling.
Is the LIS331DLH compatible with 1.8 V I/O systems?
Yes - the Vdd_IO pin accepts 1.71 V to Vdd+0.1 V, and the device guarantees 1.8 V I/O compatibility with VIH ≥ 0.8×Vdd_IO and VOL ≤ 0.1×Vdd_IO. This allows direct connection to 1.8 V MCUs without level shifters, while Vdd (2.16–3.6 V) powers the analog sensor core separately.
LIS331DLH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 16-VFLGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Type:
- Digital
- Axis:
- X, Y, Z
- Acceleration Range:
- ±2g, 4g, 8g
- Sensitivity (LSB/g):
- 1000 (±2g) ~ 256 (±8g)
- Sensitivity (mV/g):
- -
- Bandwidth:
- 25Hz ~ 500Hz
- Output Type:
- I2C, SPI
- Voltage - Supply:
- 2.16V ~ 3.6V
- Features:
- Adjustable Bandwidth, Selectable Scale, Sleep Mode
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-LGA (3x3)
LIS331DLH FAQ
1.How can I place an order for LIS331DLH through Aetrix?
Please submit a Request for Quotation (RFQ) for LIS331DLH 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 LIS331DLH reliable?
The price and inventory of LIS331DLH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LIS331DLH is usually 5 days.
3.What payment methods are accepted for LIS331DLH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LIS331DLH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LIS331DLH?
LIS331DLH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LIS331DLH 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 LIS331DLH?
For technical support, including LIS331DLH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LIS331DLH requirements.
6.How does Aetrix verify that LIS331DLH is sourced from the original manufacturer or authorized distributors?
All LIS331DLH 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 LIS331DLH meets industry standards.
7.What is the process for return or replacement of LIS331DLH?
All LIS331DLH units undergo pre-shipment inspection (PSI). If there is an issue with LIS331DLH, 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 LIS331DLH part is unused and in its original packaging.
Return procedure for LIS331DLH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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