NXP Semiconductors FXLC95000CLR1

Overview

FXLC95000CLR1 from NXP (formerly Freescale) is an intelligent motion-sensing platform integrating a 3-axis MEMS accelerometer and a 32-bit ColdFire V1 MCU in a single 24-pin LGA package. It delivers autonomous sensor processing with ±2 g/±4 g/±8 g configurable dynamic ranges, 16-bit ADC resolution, and local decision-making for gesture recognition, pedometer, and e-compass tilt compensation.

For engineers reviewing the FXLC95000CLR1 datasheet, FXLC95000CLR1 pinout, FXLC95000CLR1 application, or FXLC95000CLR1 equivalent, this device serves as a programmable sensor hub with master/slave I2C/SPI, on-chip 128 KB Flash/16 KB RAM, and low-power deep-sleep operation enabling host processor offload in mobile, wearable, and portable electronics.

Technical Context

The FXLC95000CLR1 combines analog sensing and digital control in one mixed-signal ASIC: its 3-axis MEMS transducer feeds into a capacitance-to-voltage converter and a 10–16-bit trimmed ADC, synchronized to the same sample rate as accelerometer outputs. The ColdFire V1 CPU includes hardware MAC acceleration and executes firmware from internal Flash or ROM.

It supports dual-role serial interfaces: slave I2C/SPI for host communication and master I2C/SPI for managing external sensors (magnetometers, pressure sensors, gyroscopes), while RGPIO[15:0] pins provide flexible peripheral control, interrupt I/O, and analog input routing (AN0-/AN1+).

Key Specifications

Pinout & Package

FXLC95000CLR1 uses a 24-lead LGA package (3 mm × 5 mm × 1 mm, Case 2208-01) with exposed pad for thermal management. Pin assignments are multiplexed and configurable via SIM pin-mux registers after reset.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar intelligent motion-sensing applications.

Compared with BMI270 and LSM6DSOX, FXLC95000CLR1 uniquely provides a programmable 32-bit ColdFire MCU with 128 KB Flash, dual-mode analog inputs (AN0-/AN1+), and full RGPIO configurability - making it the only option among the three that supports customer-developed sensor fusion logic and hybrid digital/analog sensor system integration.

Availability

FXLC95000CLR1 is available at Aetrix Electronics and suitable for mobile handset motion sensing, e-compass tilt compensation, pedometer implementation, smart wearable sensor hub design, and industrial activity monitoring requiring stable component supply and long-term lifecycle support.

Supply support for FXLC95000CLR1 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 is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in sensor signal conditioning and embedded processing.

The FXLC95000CLR1 belongs to NXP's Xtrinsic Intelligent Sensing Platform family, designed specifically to replace host-processor-based sensor management with autonomous, low-power, firmware-programmable motion-sensing subsystems.

FAQ

What is the primary function of the FXLC95000CLR1 in a system architecture?

The FXLC95000CLR1 acts as an autonomous motion-sensing subsystem that integrates a 3-axis MEMS accelerometer and a 32-bit ColdFire V1 MCU. Its primary function is to perform local sensor data acquisition, preprocessing, calibration, and decision-making-offloading these tasks from the main application processor. This enables longer host sleep periods and lower overall system power consumption, especially in battery-powered devices like wearables and mobile handsets. The FXLC95000CLR1 retains full programmability via CodeWarrior IDE and supports custom firmware deployment to its 128 KB Flash memory.

How does the FXLC95000CLR1 handle communication with both host processors and external sensors?

The FXLC95000CLR1 implements dual-role serial interfaces: it operates as a slave (I2C or SPI) for command/response communication with the host processor, while simultaneously acting as a master (I2C and queued SPI) to manage external sensors such as magnetometers, pressure sensors, and gyroscopes. The selection between I2C and SPI slave mode is determined at power-up by the voltage level on RGPIO8 (PDB_B). This concurrent master/slave capability allows the FXLC95000CLR1 to serve as a self-contained sensor hub without requiring additional bridge ICs or host intervention.

Can the FXLC95000CLR1 interface with analog sensors, and if so, how?

Yes, the FXLC95000CLR1 supports differential analog input via RGPIO6 (AN0−) and RGPIO7 (AN1+), which connect to an on-chip 10–16-bit trimmed ADC. These pins are synchronized to the same sample data rate as the integrated accelerometer, enabling time-aligned fusion of analog and digital sensor data. The ADC supports multiple resolution modes and is accessible through the Intelligent Sensing Framework (ISF) or directly via firmware. This capability allows the FXLC95000CLR1 to integrate analog sensors-such as thermistors, strain gauges, or analog-output pressure sensors-without external signal conditioning circuitry.

What power-saving features does the FXLC95000CLR1 offer for battery-operated devices?

The FXLC95000CLR1 includes multiple low-power modes, including deep-sleep states where the ColdFire CPU and most peripherals are disabled while retaining RAM content and wake-up capability via INT_I or slave-port activity. Its autonomous operation allows the host application processor to remain powered down until an event-such as a gesture, step, or external interrupt-requires attention. Combined with configurable accelerometer ODR and selective peripheral clock gating, the FXLC95000CLR1 achieves sub-10 µA average current in motion-triggered operation, significantly extending battery life in wearables and portable electronics.

Is the FXLC95000CLR1 pin-compatible with other members of the FXLC95000 family?

Yes, the FXLC95000CLR1 shares the identical 24-pin LGA package (3 mm × 5 mm × 1 mm, Case 2208-01) and pinout with all FXLC95000CL variants, including FXLC95000CLL1 and FXLC95000CLT1. All variants use the same mechanical footprint, thermal pad layout, and electrical pin mapping. Differences between variants are limited to temperature grade (–40°C to +85°C for FXLC95000CLR1) and packaging (tape-and-reel vs. tray), not pin functionality or physical dimensions - enabling drop-in replacement across qualified operating conditions.