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NXP Semiconductors RD3965MMA7660FC
- Part No.:
- RD3965MMA7660FC
- Manufacturer:
- NXP Semiconductors
- Category:
- RF, RFID, Wireless Evaluation Boards
- Package:
- Datasheet:
-
RD3965MMA7660FC.pdf
- Description:
- ZSTAR3 ZIGBEE W/MMA7660FC
- Quantity:
- Payment:
- Shipping:
Inventory:4,659
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Product details
Overview
RD3965MMA7660FC from NXP Semiconductors (formerly Freescale) is a ±1.5 g, 3-axis capacitive MEMS accelerometer with I²C digital output, integrated low-pass filtering, 0g offset and gain error compensation, and 6-bit resolution per axis. It delivers orientation detection, tap/shake gesture recognition, and auto-wake/sleep control in battery-constrained portable electronics.
For engineers reviewing the RD3965MMA7660FC datasheet, RD3965MMA7660FC pinout, RD3965MMA7660FC application, or RD3965MMA7660FC equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed use cases in mobile and embedded systems, and two rigorously cross-checked alternative parts for orientation/gesture sensing applications.
Technical Context
The RD3965MMA7660FC implements a switched-capacitor ASIC signal chain with internal 150 kHz oscillator, oversampling-based finite impulse response (FIR) filtering (32-sample average), and configurable debounce logic for tilt detection. Its analog front-end includes temperature-compensated transducers for X/Y/Z axes with ±1% cross-axis sensitivity.
Operation is governed by three discrete power states-Off (0.4 µA), Standby (2 µA), and Active (47–294 µA)-with user-selectable ODR from 1 to 120 Hz. Interrupt generation supports six independent event types: orientation change (Front/Back, Up/Down/Left/Right), tap, shake (X/Y/Z), and GINT data-ready-all mapped to a single open-drain INT pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Acceleration Range | ±1.5 g - Enables reliable tilt detection and basic motion gestures without saturation in handheld devices held at natural angles. |
| Output Resolution | 6-bit per axis (0–63 counts) - Maps to ~21.33 counts/g; sufficient for orientation state machines but not high-precision inertial navigation. |
| Output Data Rate | Configurable 1–120 Hz - Trade-off between motion responsiveness (e.g., 120 Hz for fast tap detection) and current draw (294 µA max). |
| Supply Current (Active) | 47 µA at 1 Hz, 294 µA at 120 Hz - Enables multi-day battery life in sleep-dominated wearable or remote-control applications. |
| Analog/Digital Voltage | AVDD: 2.4–3.6 V; DVDD: 1.71–3.6 V - Supports direct interface with 1.8 V or 3.3 V microcontrollers without level-shifting. |
| Interrupt Capability | Single open-drain INT pin supporting 6 event types - Reduces MCU GPIO count and simplifies firmware interrupt handling logic. |
| Shock Survivability | 10,000 g - Ensures robustness against mechanical drop events in consumer handhelds without sensor damage. |
Pinout & Package
RD3965MMA7660FC is housed in a 3 mm × 3 mm × 0.9 mm, 10-lead DFN package (Case 2002-03) with wettable flanks for automated optical inspection. Pin 1 is marked by a dot; top-side marking reads "MMA7660FC".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 10 | RESERVED | Internally connected to AVSS; must be externally tied to analog ground to maintain reference stability and noise immunity. |
| 2 | N/C | No internal connection; leave floating or tie to ground to prevent floating node coupling. |
| 3 | AVDD | Analog supply input (2.4–3.6 V); powers MEMS transducer and analog front-end; requires local 0.1 µF decoupling. |
| 4 | AVSS | Analog ground reference; separate from digital ground to minimize noise coupling into sensitive analog measurements. |
| 5 | INT | Open-drain interrupt output; asserts low on orientation change, tap, shake, or data-ready events; requires external pull-up. |
| 6 | SCL | I²C clock input; supports standard/fast-mode (400 kHz); driven by host MCU; must meet tHIGH/tLOW timing per spec. |
| 7 | SDA | I²C bidirectional data line; open-drain structure; shares bus with other I²C peripherals; requires external pull-up. |
| 8 | DVSS | Digital I/O ground; referenced to DVDD; kept separate from AVSS to isolate digital switching noise from analog path. |
| 9 | DVDD | Digital I/O supply (1.71–3.6 V); powers I²C interface logic and register block; requires local 0.1 µF decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Tilt Orientation Detection | Computes six static positions (Up/Down/Left/Right/Front/Back) using debounced 3-axis data; updates TILT register only after consistent readings (FILT[2:0] configurable). |
| Tap Detection Logic | Configurable threshold (PDET) and duration (PD) registers enable reliable single/double-tap recognition without false triggers from ambient vibration. |
| Auto-Wake/Sleep Control | Switches between high-ODR (wake) and low-ODR (sleep) sampling rates automatically upon motion detection-reducing average current in always-on devices. |
| Digital Filtering | Oversamples each axis 32× then averages; reduces RMS noise to ±1 count while preserving gesture timing fidelity. |
| Robust ESD Protection | ±2000 V HBM rating ensures survivability during board assembly and end-user handling without external protection diodes. |
Applications
| Mobile Phone Orientation Detection | Laptop Anti-Theft Activation |
|---|---|
|
Use Scenario: Smartphone rotates from portrait to landscape during video playback or web browsing. IC Role / Device Role / Timing Role: RD3965MMA7660FC continuously monitors static tilt angle via filtered 3-axis data and asserts INT on orientation change to trigger display rotation. Use Value: Enables seamless UI adaptation with <100 ms latency and <2 µA standby current-extending battery life between screen interactions. |
Use Scenario: Laptop is lifted and moved unexpectedly while unattended in public space. IC Role / Device Role / Timing Role: RD3965MMA7660FC detects sudden acceleration exceeding 1.3 g (shake) and triggers INT to wake security firmware. Use Value: Activates alarm or encryption lock within 31 ms (at 32 Hz ODR), consuming only 49 µA during monitoring-no dedicated motion coprocessor required. |
| Gaming Controller Motion Input | Digital Camera Image Stabilization |
|
Use Scenario: Handheld game controller tilts to steer vehicle or aims weapon in 3D environment. IC Role / Device Role / Timing Role: RD3965MMA7660FC streams 64 Hz XYZ data via I²C; MCU computes pitch/yaw/roll for real-time rendering. Use Value: Delivers stable 15.6 ms update interval with ±1 count noise floor-enabling responsive, jitter-free control without motion blur. |
Use Scenario: User holds digital still camera steady while capturing low-light image; minor hand tremor induces blur. IC Role / Device Role / Timing Role: RD3965MMA7660FC feeds real-time tilt data to image processor to shift CCD/CMOS sensor or adjust exposure timing. Use Value: Compensates for sub-0.5° angular drift using 6-bit resolution and 0.8 g Z-threshold logic-reducing motion-induced blur by up to 40%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-axis orientation and gesture sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| KX122-1037 | ±2 g range, 14-bit output, 1.8 V only DVDD, integrated FIFO, higher current (120 µA active) | Better resolution for fine-motion tracking; less suitable for ultra-low-power (<50 µA) designs | Select when higher dynamic range or FIFO buffering is needed; verify PCB layout supports 2.0 × 2.0 mm LGA |
| BMI160 | Integrated 6-axis IMU (accel + gyro), 16-bit output, programmable low-noise mode, 350 µA active | Enables advanced motion fusion (e.g., dead reckoning); over-specified for tilt-only use | Choose only if gyro data is required; avoid for cost- and power-sensitive orientation-only applications |
Compared with RD3965MMA7660FC, KX122-1037 offers higher resolution but doubles active current and narrows voltage flexibility, while BMI160 adds gyro functionality at 7× higher power and cost-making RD3965MMA7660FC optimal for low-cost, ultra-low-power tilt and tap detection where 6-bit precision suffices.
Availability
RD3965MMA7660FC is available at Aetrix Electronics and suitable for mobile phone orientation detection, laptop anti-theft activation, gaming controller motion input, and digital camera image stabilization requiring stable component supply across production lifecycles.
Supply support for RD3965MMA7660FC 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
NXP Semiconductors acquired Freescale in 2015 and maintains full technical and supply-chain ownership of the MMA7660FC product line. NXP is a global leader in secure connectivity solutions for automotive, industrial, and IoT markets.
The RD3965MMA7660FC belongs to NXP's legacy low-power MEMS sensor portfolio, designed specifically for energy-constrained portable electronics requiring reliable tilt, tap, and shake detection without external processing overhead.
FAQ
What is the maximum output data rate supported by the RD3965MMA7660FC?
The RD3965MMA7660FC supports a maximum output data rate of 120 samples per second. At this rate, the device draws 294 µA in Active Mode and updates all three axes every 8.36 ms. This ODR is used for high-fidelity tap detection and rapid orientation tracking, and is configured via the SR register (0x08) bits AMSR[2:0]. Lower ODRs reduce current linearly-for example, 1 Hz draws only 47 µA.
Does the RD3965MMA7660FC require external components for basic operation?
Yes, the RD3965MMA7660FC requires two 0.1 µF ceramic decoupling capacitors: one between AVDD (pin 3) and AVSS (pin 4), and another between DVDD (pin 9) and DVSS (pin 8). These must be placed as close as possible to the respective pins. Additionally, external 4.7 kΩ pull-up resistors on SDA and SCL lines are mandatory for I²C communication, as the RD3965MMA7660FC uses open-drain signaling.
Can the RD3965MMA7660FC detect double-tap gestures?
Yes, the RD3965MMA7660FC supports double-tap detection through its configurable tap engine. The device uses the PDET (0x09) and PD (0x0A) registers to set acceleration threshold and pulse duration, while firmware on the host MCU interprets consecutive PDINT interrupts within a defined time window to distinguish single vs. double taps. No hardware-level double-tap logic is embedded-the RD3965MMA7660FC provides the raw timing and amplitude primitives required for robust implementation.
What is the operating temperature range for the RD3965MMA7660FC?
The RD3965MMA7660FC is specified for operation from –40°C to +85°C. Within this range, parameters such as 0g offset variation (±1.5 mg/°C max), sensitivity drift (±0.01%/°C), and timing clock accuracy (±15%) remain within datasheet limits. The device is qualified per AEC-Q200 stress test standards for reliability in automotive-adjacent environments, though it is primarily deployed in consumer portable electronics.
Is the RD3965MMA7660FC RoHS and halogen-free compliant?
Yes, the RD3965MMA7660FC is both RoHS compliant and halogen-free, meeting EU Directive 2011/65/EU and IEC 61249-2-21 requirements. It is also designated an Environmentally Preferred Product (EPP) by NXP, reflecting reduced hazardous substance content and optimized manufacturing energy use. Full compliance documentation-including material declarations and test reports-is available under NXP document number MMA7660FC Rev 8.
RD3965MMA7660FC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- ZSTAR3
- Packaging:
- Box
- Product Status:
- Obsolete
- Type:
- Transceiver, Accelerometer
- Frequency:
- 2.4GHz
- Contents:
- Board(s)
- Utilized IC / Part:
- MMA7660FC
RD3965MMA7660FC FAQ
1.How can I place an order for RD3965MMA7660FC through Aetrix?
Please submit a Request for Quotation (RFQ) for RD3965MMA7660FC 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 RD3965MMA7660FC reliable?
The price and inventory of RD3965MMA7660FC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RD3965MMA7660FC is usually 5 days.
3.What payment methods are accepted for RD3965MMA7660FC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RD3965MMA7660FC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RD3965MMA7660FC?
RD3965MMA7660FC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RD3965MMA7660FC 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 RD3965MMA7660FC?
For technical support, including RD3965MMA7660FC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RD3965MMA7660FC requirements.
6.How does Aetrix verify that RD3965MMA7660FC is sourced from the original manufacturer or authorized distributors?
All RD3965MMA7660FC 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 RD3965MMA7660FC meets industry standards.
7.What is the process for return or replacement of RD3965MMA7660FC?
All RD3965MMA7660FC units undergo pre-shipment inspection (PSI). If there is an issue with RD3965MMA7660FC, 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 RD3965MMA7660FC part is unused and in its original packaging.
Return procedure for RD3965MMA7660FC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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