My Inquiry
My Account
STMicroelectronics LIS35DETR
- Part No.:
- LIS35DETR
- Manufacturer:
- STMicroelectronics
- Category:
- Accelerometers
- Package:
- 14-VFLGA
- Datasheet:
-
LIS35DETR.pdf
- Description:
- ACCEL 2.3-9.2G I2C/SPI 14LGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,340
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LIS35DETR from STMicroelectronics is a 3-axis MEMS digital accelerometer with ±2g/±8g dynamically selectable full-scale range, I²C/SPI serial interface, and integrated inertial interrupt generators for free-fall and click detection. It operates from 2.16 V to 3.6 V, consumes <1 mW at 100 Hz ODR, and delivers 12-bit acceleration data in a 3×5×0.9 mm LGA14 package for motion-activated user interfaces and vibration monitoring.
For engineers reviewing the LIS35DETR datasheet, LIS35DETR pinout, LIS35DETR application, or LIS35DETR equivalent, key selection criteria include programmable interrupt thresholds (free-fall, click/double-click), high-shock survivability (10,000g), embedded high-pass filter, 100/400 Hz output data rate, and 1.8 V–compatible I/Os for low-voltage system integration.
Technical Context
The LIS35DETR integrates a silicon MEMS sensing element fabricated via ST's dedicated inertial process and a CMOS interface IC trimmed to match sensor characteristics. Its dual-mode digital interface supports both I²C (standard/fast mode) and SPI (4-wire or 3-wire), with configurable CS pin logic determining protocol selection.
Interrupt generation is fully programmable per axis: two independent interrupt outputs (INT1, INT2) support wake-up, free-fall, and click/double-click events, each with user-defined thresholds, duration windows, latency, and timing limits via dedicated registers (e.g., FF_WU_THS_1, CLICK_Window). An embedded high-pass filter enables motion artifact rejection in tilt-compensated applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 2.16 V to 3.6 V - supports single-supply operation across battery-powered and regulated systems |
| I/O voltage compatibility | 1.8 V - enables direct interfacing with low-voltage microcontrollers without level shifters |
| Power consumption | <1 mW at 100 Hz ODR - extends battery life in portable motion-sensing devices |
| Full-scale range | ±2g / ±8g (dynamically selectable) - allows trade-off between resolution (72 mg/digit @ ±2g) and dynamic range |
| Output data rate | 100 Hz or 400 Hz - determines real-time responsiveness for gesture recognition or shock detection |
| Shock survivability | 10,000g - ensures reliability during drop testing and mechanical handling in consumer electronics |
| Operating temperature | −40°C to +85°C - validated for industrial and automotive cabin environments |
Pinout & Package
Package: LGA14 (3 mm × 5 mm × 0.9 mm, 0.5 mm pitch), RoHS-compliant ECOPACK®.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vdd_IO | Independent 1.71–Vdd+0.1 V supply for I/O buffers - decouples communication logic from analog measurement chain |
| 2,4,5,10 | GND | Dedicated ground connections - minimize noise coupling into sensitive analog front-end |
| 3,11 | Reserved | Internally connected; must be tied to Vdd (pin 3) or GND (pin 11) per datasheet - prevents floating node instability |
| 6 | Vdd | Main analog/digital core supply (2.16–3.6 V) - powers MEMS element, ADC, and control logic |
| 7 | CS | SPI enable / I²C mode select - low = SPI active; high = I²C mode - eliminates need for external mode configuration |
| 8,9 | INT1, INT2 | Open-drain inertial interrupt outputs - drive external MCU GPIOs for low-latency wake-up or event flagging |
| 12 | SDO | SPI data output / I²C device address LSB - enables daisy-chaining in SPI or unique addressing in I²C bus |
| 13 | SDA/SDI/SDO | Multi-function pin: I²C data (SDA), SPI input (SDI), or 3-wire SPI output (SDO) - reduces PCB routing complexity |
| 14 | SCL/SPC | Multi-function clock: I²C SCL or SPI SPC - shares clock line between protocols with no external mux required |
Key Features
| Feature | Design Value |
|---|---|
| Programmable interrupt generator | Two independent interrupt outputs with per-axis threshold, duration, and latch control - enables autonomous motion-triggered actions without host polling |
| Click and double-click recognition | Dedicated hardware engine with configurable time windows (CLICK_TimeLimit, CLICK_Window) and axis-specific thresholds - eliminates software-based gesture processing overhead |
| Embedded high-pass filter | Configurable cut-off frequency - removes gravity component for true dynamic acceleration analysis in tilt-invariant applications |
| Dynamically selectable full scale | Runtime switchable ±2g/±8g range via CTRL_REG2 - adapts sensitivity/resolution to varying motion profiles without power cycle |
| 10000g shock survivability | Validated mechanical robustness - ensures functional integrity after mechanical stress common in handheld and wearable deployments |
Applications
| Free-Fall Detection | Motion-Activated Functions |
|---|---|
|
Use Scenario: Detecting sudden vertical acceleration loss in portable electronics during drop events. IC Role / Device Role / Timing Role: Accelerometer providing real-time 3-axis acceleration data with programmable free-fall interrupt generation on INT1. Use Value: Triggers immediate system shutdown or protective action within ≤30 ms of impact onset, reducing damage risk. |
Use Scenario: Enabling display wake-up or UI activation when user lifts or rotates a device. IC Role / Device Role / Timing Role: Low-power motion sensor delivering 100 Hz ODR data with embedded high-pass filter to reject static tilt. Use Value: Reduces average current draw to 0.45 mA while maintaining sub-100 ms response latency for seamless UX. |
| Gaming Input Devices | Vibration Monitoring |
|
Use Scenario: Translating handheld controller tilt and shake gestures into game commands. IC Role / Device Role / Timing Role: Digital accelerometer with ±2g/±8g scaling and click/double-click hardware detection on INT2. Use Value: Enables reliable tap-to-fire or shake-to-reload actions without CPU-intensive signal processing. |
Use Scenario: Measuring machine casing vibrations in industrial equipment for predictive maintenance. IC Role / Device Role / Timing Role: High-shock-tolerant sensor operating at 400 Hz ODR with factory-calibrated offset stability (±60 mg @ ±2g). Use Value: Captures transient vibration spikes up to 10,000g without saturation, supporting early fault signature detection. |
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 |
|---|---|---|---|
| LIS3DHTR | Higher ODR (up to 1 kHz), lower power (0.5 µA in ultra-low-power mode), but no click/double-click hardware engine | Preferred for high-speed vibration analysis; unsuitable for tap-gesture–driven UIs requiring dedicated click logic | Select LIS3DHTR when sampling bandwidth >400 Hz is required and gesture recognition is handled in firmware |
| ADXL345BRMZ | Fixed ±2g/±4g/±8g/±16g ranges, I²C/SPI interface, no embedded high-pass filter, higher noise density (150 µg/√Hz) | Better suited for static tilt sensing; lacks hardware-accelerated free-fall and click detection logic | Choose ADXL345BRMZ for cost-sensitive tilt-compensation where interrupt offloading is not critical |
Compared with LIS3DHTR and ADXL345BRMZ, the LIS35DETR uniquely combines hardware-accelerated click/double-click recognition, programmable free-fall interrupt timing, and an embedded high-pass filter - enabling lower-host-CPU-load motion UX and robust drop-response in compact form factor.
Availability
LIS35DETR is available at Aetrix Electronics and suitable for free-fall detection, motion-activated UIs, gaming peripherals, and industrial vibration monitoring requiring stable component supply across production lifecycles.
Supply support for LIS35DETR 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 sensors, microcontrollers, and power management ICs, with manufacturing and R&D centers across Europe, Asia, and the Americas.
The LIS35DETR belongs to ST's "piccolo" family of ultra-compact accelerometers designed specifically for space-constrained, battery-operated motion-sensing applications demanding low power, high shock tolerance, and intelligent interrupt capabilities.
FAQ
What communication protocols does the LIS35DETR support?
The LIS35DETR supports both I²C (standard and fast mode up to 400 kHz) and SPI (4-wire and 3-wire configurations) through shared pins SCL/SPC and SDA/SDI/SDO. Protocol selection is controlled by the CS pin state: high enables I²C, low enables SPI. No external configuration resistors or jumpers are needed.
How is free-fall detection implemented in the LIS35DETR?
Free-fall detection uses dedicated hardware registers (FF_WU_CFG_1/2, FF_WU_THS_1/2, FF_WU_DURATION_1/2) to monitor acceleration magnitude across all three axes. When total vector acceleration falls below a user-defined threshold for a configurable duration, INT1 or INT2 asserts. Thresholds are programmable in 156 mg steps, durations in 1–255 ODR cycles.
Does the LIS35DETR require external components for basic operation?
No external passive components are required for core functionality. The device integrates internal trimming and reference circuits. Only decoupling capacitors (100 nF ceramic on Vdd and Vdd_IO) are recommended per ST's layout guidelines. Pull-up resistors on I²C lines are needed externally if using I²C mode.
What is the significance of the "ECOPACK®" designation for LIS35DETR?
ECOPACK® confirms compliance with RoHS Directive 2011/65/EU and ST's "Green" initiative: lead-free terminations, halogen-free molding compound, and reduced hazardous substance content. The LGA14 package meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3), qualifying for standard surface-mount assembly processes.
LIS35DETR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 14-VFLGA
- Packaging:
- Tape & Reel (TR)
- 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)
LIS35DETR FAQ
1.How can I place an order for LIS35DETR through Aetrix?
Please submit a Request for Quotation (RFQ) for LIS35DETR 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 LIS35DETR reliable?
The price and inventory of LIS35DETR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LIS35DETR is usually 5 days.
3.What payment methods are accepted for LIS35DETR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LIS35DETR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LIS35DETR?
LIS35DETR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LIS35DETR 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 LIS35DETR?
For technical support, including LIS35DETR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LIS35DETR requirements.
6.How does Aetrix verify that LIS35DETR is sourced from the original manufacturer or authorized distributors?
All LIS35DETR 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 LIS35DETR meets industry standards.
7.What is the process for return or replacement of LIS35DETR?
All LIS35DETR units undergo pre-shipment inspection (PSI). If there is an issue with LIS35DETR, 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 LIS35DETR part is unused and in its original packaging.
Return procedure for LIS35DETR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LIS35DETR 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…
