My Inquiry
My Account
STMicroelectronics LIS331DLHTR
- Part No.:
- LIS331DLHTR
- Manufacturer:
- STMicroelectronics
- Category:
- Accelerometers
- Package:
- 16-VFLGA
- Datasheet:
-
LIS331DLHTR.pdf
- Description:
- ACCELEROMETER 2-8G I2C/SPI 16LGA
- Quantity:
- Payment:
- Shipping:
Inventory:30,394
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LIS331DLHTR 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 inertial interrupt generators, 6D orientation detection, and sleep-to-wake functionality-enabling motion-activated power management in battery-constrained handheld devices.
For engineers reviewing the LIS331DLHTR datasheet, LIS331DLHTR pinout, LIS331DLHTR application, or LIS331DLHTR equivalent, key selection criteria include its 10 µA low-power mode current, 1 kHz max output data rate, 10000 g shock survivability, and LGA-16 (3×3×1 mm) package compatibility with space-constrained PCB layouts.
Technical Context
The LIS331DLHTR integrates a capacitive MEMS sensing element with a low-noise signal conditioning chain, 16-bit ADC, and configurable digital filters-including high-pass filtering for zero-g offset compensation and motion event discrimination. Its dual interrupt outputs (INT1, INT2) support independent configuration for free-fall, wake-up, and 6D position events via dedicated registers (INT1_CFG, INT2_CFG).
It supports both I²C (standard/fast-mode up to 400 kHz) and SPI (4-wire or 3-wire, up to 10 MHz), with pin-multiplexed SDA/SDI/SDO and SCL/SPC functions. The device operates across -40 °C to +85 °C and includes embedded self-test capability verified by LSb-level output shift under controlled actuation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 2.16 V to 3.6 V - supports direct connection to single-cell Li-ion or regulated 2.5 V/3.3 V rails without level-shifting. |
| I/O voltage | 1.8 V compatible - enables direct interfacing with 1.8 V microcontrollers without external translators. |
| Low-power mode current | 10 µA - extends battery life in always-on motion-detection applications such as pedometers or smartwatch lift-to-wake. |
| Full-scale range | ±2g/±4g/±8g (dynamically selectable) - allows runtime trade-off between resolution (e.g., 1 mg/digit at ±2g) and dynamic range. |
| Output data rate | 0.5 Hz to 1 kHz - supports low-frequency vibration monitoring (0.5 Hz) and high-speed impact logging (1 kHz). |
| Shock survivability | 10000 g - ensures robustness during drop testing and mechanical handling in consumer electronics assembly. |
| Operating temperature | -40 °C to +85 °C - qualified for industrial and automotive cabin environments without derating. |
Pinout & Package
LGA-16 (3 mm × 3 mm × 1 mm) land grid array package with exposed pad for thermal and mechanical stability; RoHS-compliant ECOPACK® construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 Vdd_IO | I/O power supply | Separate 1.8 V rail for digital interface-decouples logic noise from analog measurement chain. |
| 4 SCL/SPC | Clock input | Multiplexed I²C clock (SCL) or SPI clock (SPC); requires pull-up for I²C, driven actively for SPI. |
| 6 SDA/SDI/SDO | Bidirectional data | Supports I²C data (SDA), SPI input (SDI), or 3-wire SPI output (SDO)-mode selected by CS state. |
| 7 SDO/SA0 | Output/address bit | In I²C mode, SA0 sets LSB of 7-bit slave address (0x31 or 0x33); in SPI mode, SDO provides readback data. |
| 8 CS | Interface select | CS = 0 enables SPI; CS = 1 enables I²C - eliminates need for external mode-switching logic. |
| 9 & 11 INT2 / INT1 | Programmable interrupt outputs | Open-drain, independently configurable for motion, free-fall, or 6D orientation events; drive external MCU wake pins directly. |
| 14 Vdd | Analog & core supply | Main 2.16–3.6 V supply for MEMS sensor and ADC; must be decoupled near pin per layout guidelines. |
| 2,3,10,15 NC/Reserved | No-connect/reserved | Internally unused or factory test-only; must be left unconnected or tied per datasheet (GND/Vdd as specified). |
Key Features
| Feature | Design Value |
|---|---|
| 6D orientation detection | Identifies device tilt quadrant (up/down/left/right/face-up/face-down) using thresholded axis comparisons-enables auto-rotate and UI context switching without host CPU overhead. |
| Sleep-to-wake function | Enters 10 µA low-power mode while retaining interrupt logic; wakes on motion exceeding user-defined threshold-reduces system-level power by >95% vs continuous sampling. |
| Embedded self-test | Electrostatic actuation shifts output by 120–750 LSb depending on axis and full-scale-verifies MEMS integrity and signal path in final assembly without external equipment. |
| Dual interrupt generators | Two independent engines (INT1_CFG/INT2_CFG) allow concurrent free-fall detection on one channel and tap/motion wake on another-eliminates need for host polling or firmware state machines. |
| High shock survivability | 10000 g rating validated per MIL-STD-883H Method 2002 - ensures functional reliability after board-level drop tests and mechanical stress in portable devices. |
Applications
| Smartphone Motion Activation | Pedestrian Navigation System |
|---|---|
|
Use Scenario: Detecting screen rotation, flip-to-silence, and lift-to-wake gestures in smartphones and tablets. IC Role / Device Role / Timing Role: Primary 3-axis orientation and motion trigger; generates INT1 on 6D position change or INT2 on acceleration threshold exceedance. Use Value: Enables sub-100 ms gesture response with <10 µA background current-extending standby time by >30% versus polling-based alternatives. |
Use Scenario: Step counting and stride-length estimation in wearable fitness trackers and GPS-denied indoor navigation. IC Role / Device Role / Timing Role: Low-power step-detection engine; uses high-pass filtered Z-axis data at 50 Hz ODR to reject gravity bias and isolate foot-strike transients. Use Value: Delivers ±2% step-count accuracy over 10k steps with integrated motion-state machine-reducing host MCU processing load by offloading real-time peak detection. |
| Industrial Vibration Monitor | Gaming Controller Input |
|
Use Scenario: Continuous vibration spectrum analysis on motors, pumps, and HVAC systems for predictive maintenance. IC Role / Device Role / Timing Role: High-fidelity acceleration capture at 1 kHz ODR with 218 µg/√Hz noise density; streams raw 16-bit data via SPI burst reads. Use Value: Captures harmonics up to 500 Hz (ODR/2 bandwidth) with sufficient SNR to detect bearing fault frequencies-enabling early anomaly detection without external amplifiers. |
Use Scenario: Real-time motion input for VR headsets and gesture-controlled gamepads requiring low-latency orientation tracking. IC Role / Device Role / Timing Role: Orientation reference for 6DoF fusion; delivers synchronized X/Y/Z samples at 100–400 Hz with <1 ms turn-on time from sleep. Use Value: Achieves <5 ms end-to-end motion-to-display latency when paired with complementary gyro-meeting VR industry sub-20 ms motion-to-photon requirement. |
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 same LGA-16 package; higher current (350 µA normal mode) and no 6D detection. | Targeted at e-compass and heading calculation-not optimized for pure motion-triggered power saving. | Select when magnetic field data is required alongside acceleration; avoid if minimizing BOM count and power is primary. |
| ADXL345BCCZ | 13-bit resolution (vs 16-bit), 40–200 µA active current, no embedded 6D logic; supports SPI/I²C but lacks sleep-to-wake interrupt autonomy. | Requires host MCU to poll status register for motion events-increasing firmware complexity and average power. | Choose for legacy designs already using ADXL345 ecosystem; prefer LIS331DLHTR where autonomous interrupt-driven operation is critical. |
Compared with LSM303DLHC and ADXL345BCCZ, the LIS331DLHTR uniquely combines ultra-low 10 µA sleep current, hardware-accelerated 6D orientation, and dual independent interrupt generators-making it optimal for battery-powered devices requiring zero-CPU motion awareness.
Availability
LIS331DLHTR is available at Aetrix Electronics and suitable for smartphone motion activation, wearable pedometer systems, industrial vibration monitors, and gaming controller input requiring stable component supply across extended temperature and long production lifecycles.
Supply support for LIS331DLHTR 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, specializing in MEMS sensors, microcontrollers, power management, and automotive ICs-with over 20 years of MEMS manufacturing heritage and ISO/TS 16949-certified fabrication.
The LIS331DLHTR belongs to ST's "nano" accelerometer product line, engineered specifically for ultra-low-power, space-constrained portable electronics where motion-triggered intelligence must coexist with multi-year battery life.
FAQ
What is the minimum supply voltage for reliable operation of the LIS331DLHTR?
The LIS331DLHTR operates reliably from 2.16 V to 3.6 V on Vdd. Below 2.16 V, internal voltage regulators and ADC reference may become unstable, causing invalid data or failure to exit power-down mode. Vdd_IO must remain ≥1.71 V for I/O functionality, even if Vdd is powered down.
Can the LIS331DLHTR generate interrupts for both free-fall and tap detection simultaneously?
Yes. INT1 and INT2 are fully independent: INT1_CFG can be configured for free-fall (AOI=0, 6D=0), while INT2_CFG can be set for single/double-tap detection (AOI=1, 6D=0) with separate thresholds and duration windows-enabling concurrent event handling without host intervention.
How does the embedded self-test verify sensor functionality in-system?
The self-test applies electrostatic force to the MEMS proof mass, shifting output by 120–750 LSb depending on axis and full-scale setting. By reading OUT_X/Y/Z registers before and after enabling CTRL_REG4.ST=1, users confirm signal chain integrity-including ADC, digital filter, and register interface-without external test fixtures.
Is the LIS331DLHTR pin-compatible with other ST "nano" accelerometers like LIS3DH?
No. LIS331DLHTR uses LGA-16 with specific pin assignments (e.g., dual interrupt outputs, CS for interface selection, SA0/SDO multiplexing) not shared by LIS3DH (LGA-16 but different pinout and register map). Direct replacement requires PCB redesign and firmware adaptation.
LIS331DLHTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 16-VFLGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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)
LIS331DLHTR FAQ
1.How can I place an order for LIS331DLHTR through Aetrix?
Please submit a Request for Quotation (RFQ) for LIS331DLHTR 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 LIS331DLHTR reliable?
The price and inventory of LIS331DLHTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LIS331DLHTR is usually 5 days.
3.What payment methods are accepted for LIS331DLHTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LIS331DLHTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LIS331DLHTR?
LIS331DLHTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LIS331DLHTR 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 LIS331DLHTR?
For technical support, including LIS331DLHTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LIS331DLHTR requirements.
6.How does Aetrix verify that LIS331DLHTR is sourced from the original manufacturer or authorized distributors?
All LIS331DLHTR 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 LIS331DLHTR meets industry standards.
7.What is the process for return or replacement of LIS331DLHTR?
All LIS331DLHTR units undergo pre-shipment inspection (PSI). If there is an issue with LIS331DLHTR, 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 LIS331DLHTR part is unused and in its original packaging.
Return procedure for LIS331DLHTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LIS331DLHTR Tags
-
MXC4005XC
Memsic Inc.
-
MC3419
Memsic Inc.
-
MC3479
Memsic Inc.
-
MXC6655XA
Memsic Inc.
-
MC3630
Memsic Inc.
.jpg)
-
LIS2HH12TR
STMicroelectronics
-
KX122-1037
Kionix Inc.
-
LIS2DE12TR
STMicroelectronics
-
LIS2DH12TR
STMicroelectronics
-
MC3635
Memsic Inc.
-
LIS2DS12TR
STMicroelectronics
-
LIS3DHTR
STMicroelectronics
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
