MMA9553LR1 - 3-Axis MEMS Accelerometer w/ MCU | NXP | Pedometer Platform
MPN: MMA9553LR1 ✗ اختتامِ زندگیMMA9553LR1 جائزہ
An accelerometer is a micro-electromechanical (MEMS) sensor that measures proper acceleration along one or more axes, converting mechanical displacement of a proof mass into a measurable electrical signal. In the broader taxonomy, the MMA9553LR1 sits inside the chain: accelerometer -> motion sensor -> inertial measurement unit (sub-class) -> sensor -> semiconductor device. Because it integrates an MCU and firmware, the MMA9553LR1 also belongs to the System-in-Package (SiP) / intelligent-sensor category where pre-processed motion data (e.g. pedometer counts, gestures) is exposed directly to a host processor.
Key differentiating features of the MMA9553LR1 include built-in pedometer firmware, a dedicated architecture to manage companion sensors (magnetometer, pressure), an SPI/I2C-compatible host interface, configurable FIFO and watermark interrupts, and a low-power operating profile suitable for always-on wearable designs. The on-chip MCU executes NXP's embedded pedometer and gesture libraries, offloading continuous motion processing from the application processor.
Technically, the device combines a capacitive-sense MEMS front-end with sigma-delta conversion and a 32-bit ARM Cortex-M0 class core running the embedded application firmware. The capacitive sense technique yields excellent offset stability across temperature and very low noise density, while the embedded MCU enables deterministic on-sensor algorithms such as step counting, tilt, and tap detection.
Typical applications include wearable fitness bands, smartphone pedometer accessories, sports watches, anti-theft motion alarms, and tilt/orientation-aware industrial handheld devices. The 16-LGA (3x3) footprint is optimized for space-constrained designs such as wristbands and patches.
When designing with the MMA9553LR1, keep the host microcontroller's interrupt line available for the INT1/INT2 outputs to support wake-on-motion and FIFO watermark events. Decouple VDD close to the package with a 100 nF ceramic capacitor and follow NXP's recommended land pattern to preserve accelerometer offset and noise performance.
This page synthesizes verified distributor pricing, drop-in same-package alternatives, and practical design notes - information not consolidated in the manufacturer's datasheet alone.
کے لیے ڈراپ اِن متبادل MMA9553LR1 — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں MMA9553LR1 (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Acceleration Range, Interface, Operating Temperature, Output Type.
MMA9550LR1
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
MMA8451QR1
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
MMA8452QR1
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →MMA8453QR1
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
LIS2DHTR
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
ADXL345BCCZ
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
MMA9553LR1 زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Type | Accelerometer with embedded MCU (Motion-Sensing Platform) |
| Sensing Axes | X, Y, Z |
| Acceleration Range | ±2 g, ±4 g, ±8 g (selectable) |
| Bandwidth / Output Data Rate | 1.9 Hz to 244 Hz |
| آؤٹ پٹ کی قسم | Digital (I2C/SPI) |
| Supply Voltage (VDD) | 1.71 V to 1.89 V (typical 1.8 V) |
| انٹرفیس | I2C / SPI-compatible |
| Embedded MCU | 32-bit low-power MCU |
| On-chip Memory | Flash (size per datasheet family) |
| Integrated Features | Pedometer firmware, gesture/tilt detection, sensor-hub mode |
| آپریٹنگ درجہ حرارت | -40 °C to +85 °C |
| پیکیج | 16-LGA (3x3 mm) |
| ماؤنٹنگ ٹائپ | Surface Mount |
| RoHS اسٹیٹس | Compliant |
MMA9553LR1 پن کنفیگریشن
| پن A1 | VDD — 1.8 V power supply |
| پن A2 | GND — Ground |
| پن A3 | NC — Not connected (per datasheet) |
| پن A4 | INT1 — Interrupt output 1 |
| پن B1 | SCL/SCLK — I2C clock / SPI clock |
| پن B2 | SDA/SDI — I2C data / SPI data in |
| پن B3 | NC — Not connected (per datasheet) |
| پن B4 | CS — SPI chip select (active low) |
| پن C1 | SA0/MISO — I2C slave address LSB / SPI data out |
| پن C2 | INT2 — Interrupt output 2 |
| پن C3 | NC — Not connected (per datasheet) |
| پن C4 | AUX — Auxiliary sensor-hub interface |
| پن D1 | GND — Ground |
| پن D2 | NC — Not connected (per datasheet) |
| پن D3 | RESET — Reset input |
| پن D4 | GND — Ground |
عام استعمالات
MMA9553LR1 کے لیے موزوں ہے 6 ایپلیکیشنs: Wearable Fitness Band Pedometer, Smartphone Pedometer Accessory, Sports Watch Step / Activity Tracker, Anti-Theft Motion Alarm Tag, Tilt / Orientation-Aware Industrial Handheld, IoT Sensor-Node Motion Wake Source.
Wearable Fitness Band Pedometer
The MMA9553LR1's integrated 32-bit MCU and embedded pedometer firmware make it a drop-in solution for wrist-worn fitness bands where step-count accuracy must be maintained while minimizing host-processor wake events. The selectable ±2g/±4g/±8g ranges cover normal walking, jogging, and running acceleration profiles, while the 1.9 Hz to 244 Hz ODR lets firmware switch to low-rate sampling during inactivity and high-rate sampling during detected motion. Placed on the wristband PCB near the Li-ion + LDO output, the 1.71 V to 1.89 V supply rail matches common single-cell wearable power trees. Compared with raw accelerometer + host-side pedometer designs, this part eliminates host algorithm development and reduces total BOM cost.
تجویز کردہ
Smartphone Pedometer Accessory
For clip-on or screen-attached pedometer accessories paired with a smartphone, the MMA9553LR1's embedded pedometer offloads continuous step counting from the phone CPU and extends battery life. The I2C/SPI host interface lets the accessory microcontroller read step counts directly without streaming raw acceleration data. With the 16-LGA (3x3 mm) footprint, the device fits inside ultra-thin accessory enclosures that the larger MMA845x QFN footprint family cannot accommodate. Trade-off: unlike a discrete accelerometer, the integrated MCU path adds a small fixed current draw (~tens of µA in active pedometer mode), so designers must budget against accessory battery life targets.
تجویز کردہ
Sports Watch Step / Activity Tracker
In sports watches the MMA9553LR1 acts as a low-power always-on motion processor that maintains step count, distance estimate, and tilt state while the main application processor remains in sleep. The device's 1.9 Hz minimum ODR enables <50 µA-class quiescent operation between motion events, extending multi-day battery life on a single charge. Its 16-LGA (3x3 mm) footprint is well-suited to the curved, space-constrained PCB layouts typical of sports-watch designs. Compared with discrete accelerometer + algorithm solutions, this part delivers pre-processed activity data via register reads and reduces overall system power.
تجویز کردہ
Anti-Theft Motion Alarm Tag
Battery-powered anti-theft tags benefit from the MMA9553LR1's integrated motion-detection firmware: the embedded MCU runs the tilt and acceleration-change algorithms locally and only wakes the radio when a qualifying motion event occurs. The selectable ±2g/±4g/±8g ranges allow the firmware threshold to be tuned for sensitive (small movement) versus robust (large tilt) trigger conditions. At 1.8 V typical supply and 3x3 mm LGA, the part fits inside credit-card-thin enclosures. Compared with a raw accelerometer + external MCU design, the integrated approach reduces PCB area by roughly 30-40% and removes the need for an external algorithm MCU.
تجویز کردہ
Tilt / Orientation-Aware Industrial Handheld
Industrial handhelds (barcode scanners, rugged tablets) use the MMA9553LR1's embedded tilt-detection firmware to detect display orientation and trigger automatic screen rotation without main-processor intervention. The selectable ±2g/±4g/±8g ranges handle the moderate accelerations seen in handheld swings and drops, and the 16-LGA package tolerates the wider -40 °C to +85 °C industrial temperature range. The integrated sensor-hub capability also lets the part manage a companion magnetometer over I2C, offloading 9-DoF fusion from the application processor. Trade-off: designers must verify that the embedded firmware library exposes the tilt thresholds required for their specific handheld use case.
تجویز کردہ
IoT Sensor-Node Motion Wake Source
Battery-powered IoT sensor nodes (smart-home detectors, asset trackers) can use the MMA9553LR1 as a low-power motion wake-up source: the embedded MCU runs continuous acceleration monitoring and asserts an interrupt only on qualifying motion, allowing the radio and main MCU to remain in deep sleep. The 1.71 V to 1.89 V supply range matches a coin-cell + LDO topology, and the 3x3 mm LGA footprint suits miniature node PCBs. Compared with a polling accelerometer + host interrupt scheme, this approach cuts average current draw by an order of magnitude - critical for multi-year coin-cell node lifetimes.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا MMA9553LR1 — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | MMA9550LR1 | MMA8451QR1 | MMA8452QR1 | MMA8453QR1 | LIS2DHTR | ADXL345BCCZ |
|---|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | STMicroelectronics | Analog Devices |
| Package | 16-LGA (3x3 mm) | 16-LGA (3x3 mm) - same | 16-QFN (3x3 mm) - same footprint class | 16-QFN (3x3 mm) - same footprint class | 16-QFN (3x3 mm) - same footprint class | 16-LGA (3x3 mm) - same | 14-LGA (3x3.5 mm) - same footprint class |
| Acceleration Range | ±2g / ±4g / ±8g | ±2g / ±4g / ±8g | ±2g / ±4g / ±8g | ±2g / ±4g / ±8g | ±2g / ±4g / ±8g | ±2g / ±4g / ±8g / ±16g | ±2g / ±4g / ±8g / ±16g |
| Output Data Rate | 1.9 Hz to 244 Hz | 1.9 Hz to 244 Hz | 1.56 Hz to 800 Hz | 1.56 Hz to 800 Hz | 1.56 Hz to 800 Hz | 1 Hz to 5 kHz | 0.1 Hz to 3.2 kHz |
| Supply Voltage | 1.71 V to 1.89 V | 1.71 V to 1.89 V | 1.95 V to 3.6 V | 1.95 V to 3.6 V | 1.95 V to 3.6 V | 1.71 V to 3.6 V | 2.0 V to 3.6 V |
| Embedded MCU / Pedometer Firmware | Yes (32-bit MCU + pedometer) | Yes (32-bit MCU, no pedometer firmware) | No (raw accelerometer) | No (raw accelerometer) | No (raw accelerometer) | No (raw accelerometer) | No (raw accelerometer) |
| Host Interface | I2C / SPI | I2C / SPI | I2C | I2C | I2C | I2C / SPI | I2C / SPI |
| Lifecycle Status (Oct 2026) | NRND | Active (recommended replacement) | Active | Active | Active | Active | Active |
اہم امتیازی خصوصیات
- Integrated pedometer firmware on embedded 32-bit MCU (بمقابلہMMA8451QR1)
- Same 16-LGA (3x3 mm) footprint as the bare MMA9550LR1 (بمقابلہMMA9550LR1)
- Dedicated sensor-hub hardware to manage companion sensors (magnetometer, pressure) (بمقابلہLIS2DHTR)
- Selectable ±2g/±4g/±8g ranges (بمقابلہADXL345BCCZ)
ڈیزائن نوٹس
The MMA9553LR1 requires a clean 1.8 V rail (1.71 V to 1.89 V). Place a 100 nF X7R ceramic decoupling capacitor within 2 mm of the VDD ball and a 1 µF bulk capacitor on the same net to suppress MCU switching transients. Estimated: with the embedded pedometer running at 50 Hz ODR, average active current is in the tens-of-µA range per the family datasheet, so a low-noise LDO (e.g. 50 mA class) is sufficient.
Use the NXP-recommended LGA land pattern (per the package drawing in the MMA9553L datasheet). Stencil apertures should be 1:1 with the pads to avoid solder balls bridging the 0.4 mm-pitch array. Avoid placing noisy digital traces or switching-node copper directly under the LGA - keep at least 3 mm of clear ground plane around the package to preserve accelerometer offset and noise performance.
Do not assume the MMA9553LR1 behaves like a raw accelerometer: it is a sensor-hub with an embedded 32-bit MCU, and over-the-air register reads return pre-processed data (step counts, tilt flags). Host firmware written for a raw-accelerometer register map (e.g. MMA845x) will not function without an I2C/SPI protocol translation layer. Also, the part is NXP-NRND as of 2026-10-15 - qualify the MMA9550LR1 or a cross-brand raw-accelerometer alternative in parallel for new designs.
تعمیل کی معلومات
RoHS and lead-free per NXP product page. AEC-Q100 not applicable - this is a consumer/industrial-grade part.
