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STMicroelectronics LIS302DL
- Part No.:
- LIS302DL
- Manufacturer:
- STMicroelectronics
- Category:
- Accelerometers
- Package:
- 14-VFLGA
- Datasheet:
-
LIS302DL.pdf
- Description:
- ACCEL 2.3-9.2G I2C/SPI 14LGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,241
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Product details
Overview
LIS302DL from STMicroelectronics is a 3-axis MEMS digital accelerometer IC with ±2g/±8g dynamically selectable full-scale range, I²C/SPI serial interface, and embedded interrupt logic for inertial wake-up and free-fall detection. It operates from 2.16 V to 3.6 V, consumes <1 mW in active mode, and delivers 100 Hz or 400 Hz output data rates - used in motion-activated user interfaces and portable device orientation sensing.
For engineers reviewing the LIS302DL datasheet, LIS302DL pinout, LIS302DL application, or LIS302DL equivalent, key selection criteria include programmable click/double-click recognition, high-pass filter configuration, self-test capability, interrupt threshold timing control, and LGA-14 package compatibility with space-constrained PCB layouts.
Technical Context
The LIS302DL integrates a silicon MEMS sensing element with a CMOS interface IC trimmed for matched performance. Its dual-mode digital interface supports both I²C (7-bit address 0x3A/0x3B) and 3-/4-wire SPI, enabling flexible host controller integration in resource-limited microcontroller systems.
Interrupt generation is implemented via two independent configurable paths (INT1/INT2), each supporting free-fall/wake-up events with programmable thresholds, duration windows, and axis masking. The embedded high-pass filter enables motion-decoupled event detection by removing static acceleration components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 2.16 V to 3.6 V - compatible with single-cell Li-ion and 3.3 V logic rails without level-shifting. |
| Full-scale range | ±2 g / ±8 g (dynamically selectable via CTRL_REG1) - enables trade-off between resolution (18 mg/digit @ ±2 g) and shock tolerance. |
| Output data rate | 100 Hz or 400 Hz - fixed internal sampling; determines maximum event detection latency and power vs. responsiveness balance. |
| Power consumption | <1 mW at 100 Hz (VDD = 2.5 V) - enables multi-month battery life in always-on motion-sensing applications. |
| Shock survivability | 10,000 g - ensures robustness during manufacturing handling and end-user drop events. |
| Operating temperature | −40 °C to +85 °C - validated for industrial and consumer portable equipment environments. |
| I/O voltage compatibility | 1.8 V tolerant - allows direct interfacing with low-voltage microcontrollers without external translators. |
Pinout & Package
Package: LGA-14 (3 mm × 5 mm × 0.9 mm, Thin Land Grid Array), RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VDD_IO | Independent 1.8–3.6 V supply for I/O pins - decouples logic interface from core sensor supply (VDD). |
| 6 | VDD | Main analog/digital core supply (2.16–3.6 V) - powers MEMS element and signal chain. |
| 7 | CS | SPI chip select / I²C mode selector (high = I²C, low = SPI) - enables dual-interface flexibility on same PCB footprint. |
| 8, 9 | INT1, INT2 | Open-drain inertial interrupt outputs - drive external MCU GPIOs directly; support wake-up from sleep states. |
| 12 | SDO | SPI serial data output / I²C LSB of slave address - enables daisy-chaining in SPI or unique addressing in I²C bus. |
| 13 | SDA/SDI/SDO | Multi-function pin: I²C bidirectional data, SPI input (SDI), or 3-wire SPI output (SDO) - reduces pin count in compact designs. |
| 14 | SCL/SPC | I²C clock or SPI serial port clock - shared clock line simplifies routing and supports both protocols with minimal layout changes. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable click/double-click recognition | Configurable via CLICK_CFG, CLICK_THS, and timing registers - enables gesture-based UI without host CPU polling. |
| Embedded high-pass filter | Adjustable cut-off frequency (via HP_FILTER_RESET and CTRL_REG2) - removes gravity vector to isolate dynamic motion for tilt-independent wake-up. |
| Self-test function | Electrostatic actuation verifies MEMS element and signal path integrity in-system - eliminates need for mechanical test fixtures. |
| Dual interrupt generators | Two independent interrupt sources (INT1/INT2) with per-axis threshold, duration, and latch control - supports concurrent free-fall and activity detection. |
| Factory-trimmed sensitivity & offset | Typical zero-g offset ±40 mg (±2 g range); sensitivity 18 mg/digit (±2 g) - reduces calibration burden in production test. |
Applications
| Smartphone Screen Rotation | Portable Media Player Gesture Control |
|---|---|
|
Use Scenario: Detecting device tilt and orientation changes to auto-rotate display content. IC Role / Device Role / Timing Role: Primary 3-axis orientation sensor providing real-time acceleration vectors at 100 Hz for fusion algorithms. Use Value: Enables seamless portrait/landscape switching with <500 ms response time and immunity to static gravitational bias via embedded high-pass filter. |
Use Scenario: Recognizing tap, shake, or double-tap gestures to navigate menus or skip tracks. IC Role / Device Role / Timing Role: Dedicated inertial event detector using programmable click/double-click engine and interrupt outputs. Use Value: Offloads gesture processing from main CPU, reducing system power by >30% versus polling-based implementations. |
| Laptop Free-Fall Protection | Industrial Vibration Monitoring Node |
|
Use Scenario: Triggering hard disk head parking when sudden vertical acceleration indicates drop onset. IC Role / Device Role / Timing Role: Safety-critical inertial wake-up sensor generating INT1 signal upon crossing programmable free-fall threshold. Use Value: Provides ≥10 ms warning window before impact (at 400 Hz ODR), sufficient for mechanical actuator response. |
Use Scenario: Capturing low-amplitude vibration signatures in predictive maintenance sensors mounted on motors or pumps. IC Role / Device Role / Timing Role: Low-power edge-accelerometer capturing burst-mode acceleration data for FFT analysis. Use Value: Delivers ±2 g range with 18 mg/digit resolution and 10,000 g shock survivability for harsh factory-floor deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-axis digital accelerometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LIS3DSH | Wider full-scale range (±2/±4/±6/±8/±16 g), higher ODR (up to 5.3 kHz), SPI-only interface. | Better suited for high-frequency vibration analysis; lacks I²C and click-detection logic. | Select when bandwidth >1 kHz or multi-range flexibility is required; avoid if I²C or gesture features are essential. |
| MMA8452Q | Integrated FIFO (32 samples), lower noise density (150 µg/√Hz), I²C-only, no SPI support. | Optimized for low-noise tilt sensing and buffered burst reads; no interrupt-driven click detection. | Prefer for precision orientation measurement with host offload; not suitable for SPI-based or dual-interrupt designs. |
Compared with LIS302DL, LIS3DSH offers superior bandwidth but sacrifices I²C compatibility and embedded gesture logic, while MMA8452Q improves noise performance and buffering at the cost of interface flexibility and inertial event processing capability.
Availability
LIS302DL is available at Aetrix Electronics and suitable for smartphone screen rotation, laptop free-fall protection, and portable media player gesture control requiring stable component supply across long-life consumer electronics programs.
Supply support for LIS302DL 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, power management, microcontrollers, and automotive ICs.
The LIS302DL belongs to ST's "piccolo" ultra-compact accelerometer family, designed specifically for space-constrained portable devices requiring low-power motion awareness and intelligent interrupt-driven event handling.
FAQ
What communication protocols does the LIS302DL support?
The LIS302DL supports both I²C (7-bit address 0x3A/0x3B) and 3-/4-wire SPI interfaces. Mode selection is controlled by the CS pin state: high enables I²C, low enables SPI. SDA/SDI/SDO and SCL/SPC pins are shared, allowing hardware reuse across protocols without PCB redesign.
How is free-fall detection configured on the LIS302DL?
Free-fall detection is configured using FF_WU_CFG_1/FF_WU_CFG_2 registers to enable axes and set event polarity, FF_WU_THS_1/FF_WU_THS_2 to define acceleration thresholds (in mg steps), and FF_WU_DURATION_1/FF_WU_DURATION_2 to specify minimum duration (in samples). Output triggers INT1 or INT2 based on register assignment.
Does the LIS302DL require external components for basic operation?
No external passive components are required for basic operation. Only decoupling capacitors (100 nF ceramic on VDD and VDD_IO) are recommended per ST's layout guidelines. Pull-up resistors on SDA/SCL (for I²C) or SDO (for SPI) are needed but are standard interface requirements, not device-specific.
What is the purpose of the embedded high-pass filter?
The embedded high-pass filter removes the DC component (gravity vector) from acceleration measurements, enabling detection of pure dynamic motion events like taps or shakes independent of device orientation. Its cut-off frequency is software-configurable via CTRL_REG2 and HP_FILTER_RESET, supporting adaptive filtering for varying use cases.
LIS302DL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 14-VFLGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Type:
- Digital
- Axis:
- X, Y, Z
- Acceleration Range:
- ±2.3g, 9.2g
- Sensitivity (LSB/g):
- 55 (±2.3g) ~ 13 (±9.2g)
- Sensitivity (mV/g):
- -
- Bandwidth:
- 50Hz ~ 200Hz
- Output Type:
- I2C, SPI
- Voltage - Supply:
- 2.16V ~ 3.6V
- Features:
- Selectable Scale
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-LGA (3x5)
LIS302DL FAQ
1.How can I place an order for LIS302DL through Aetrix?
Please submit a Request for Quotation (RFQ) for LIS302DL 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 LIS302DL reliable?
The price and inventory of LIS302DL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LIS302DL is usually 5 days.
3.What payment methods are accepted for LIS302DL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LIS302DL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LIS302DL?
LIS302DL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LIS302DL 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 LIS302DL?
For technical support, including LIS302DL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LIS302DL requirements.
6.How does Aetrix verify that LIS302DL is sourced from the original manufacturer or authorized distributors?
All LIS302DL 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 LIS302DL meets industry standards.
7.What is the process for return or replacement of LIS302DL?
All LIS302DL units undergo pre-shipment inspection (PSI). If there is an issue with LIS302DL, 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 LIS302DL part is unused and in its original packaging.
Return procedure for LIS302DL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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