Overview
The MMA8452QR1 is a smart, low-power, three-axis capacitive micromachined digital accelerometer produced by NXP USA Inc. It features 12 bits of resolution and is designed to provide high accuracy and flexibility in various applications. The device includes embedded interrupt functions that allow for significant power savings by relieving the host processor from continuously polling data. It supports user-selectable full scales of ±2g, ±4g, and ±8g, with both high-pass filtered and non-filtered data available in real-time. The MMA8452QR1 is packaged in a 16-pin QFN (3 mm x 3 mm x 1 mm) and operates within a temperature range of -40°C to +85°C.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | NXP USA Inc. |
| Package/Case | 16-pin QFN (3 mm x 3 mm x 1 mm) |
| Axis | X, Y, Z |
| Acceleration Range | ±2g, ±4g, ±8g |
| Resolution | 12-bit and 8-bit digital output |
| Interface Type | I²C |
| Supply Voltage | 1.95 V to 3.6 V |
| Interface Voltage | 1.6 V to 3.6 V |
| Output Data Rates (ODR) | 1.56 Hz to 800 Hz |
| Bandwidth | 0.78 Hz to 400 Hz |
| Noise | 99 μg/√Hz |
| Operating Temperature | -40°C to +85°C |
| RoHS Compliance | Yes |
Key Features
- 12-bit and 8-bit digital output
- Two programmable interrupt pins for six interrupt sources
- Orientation (portrait/landscape) detection with set hysteresis
- Automatic ODR change for auto-wake and return to sleep
- High-pass filter data available real-time
- Self-test capability
- Three embedded channels of motion detection: freefall, pulse detection, and transient detection
- User interface options such as menu scrolling by orientation change and pulse detection for button replacement
Applications
The MMA8452QR1 is suitable for a variety of applications, including:
- Sensing and instrumentation
- Motion detection and tracking
- Orientation detection in mobile devices and consumer electronics
- Automotive systems requiring low-power and high-accuracy acceleration measurements
- Industrial automation and control systems
Q & A
- What is the MMA8452QR1?
The MMA8452QR1 is a smart, low-power, three-axis capacitive micromachined digital accelerometer produced by NXP USA Inc.
- What are the acceleration ranges supported by the MMA8452QR1?
The device supports user-selectable full scales of ±2g, ±4g, and ±8g.
- What is the resolution of the MMA8452QR1?
The MMA8452QR1 has 12-bit and 8-bit digital output resolution.
- What interface type does the MMA8452QR1 use?
The MMA8452QR1 uses an I²C digital output interface.
- What is the operating temperature range of the MMA8452QR1?
The device operates within a temperature range of -40°C to +85°C.
- Does the MMA8452QR1 support high-pass filtered data?
Yes, the MMA8452QR1 provides high-pass filtered data as well as non-filtered data available in real-time.
- What are the key features of the MMA8452QR1's interrupt system?
The device has two programmable interrupt pins for six interrupt sources and can generate inertial wake-up interrupt signals from any combination of the configurable embedded functions.
- Is the MMA8452QR1 RoHS compliant?
Yes, the MMA8452QR1 is RoHS compliant.
- What is the package type of the MMA8452QR1?
The MMA8452QR1 is packaged in a 16-pin QFN (3 mm x 3 mm x 1 mm).
- What are some typical applications of the MMA8452QR1?
The MMA8452QR1 is used in sensing and instrumentation, motion detection, orientation detection in mobile devices, automotive systems, and industrial automation.
