NXP Semiconductors MCXC244VFM

Overview

MCXC244VFM from NXP is an Arm® Cortex®-M0+ microcontroller operating at up to 48 MHz, featuring 256 KB Flash, 32 KB SRAM, USB Full-Speed 2.0 device interface (crystal-free), and 23 GPIOs in a 32-pin QFN package. It targets cost-sensitive, battery-powered applications requiring low-power connectivity and human-machine interface support.

For engineers reviewing the MCXC244VFM datasheet, MCXC244VFM pinout, MCXC244VFM application, or MCXC244VFM equivalent, key selection considerations include its crystal-free USB FS capability, deep-sleep current of 1.96 µA with RAM+RTC retention, FlexIO for custom serial peripheral emulation, segment LCD support (up to 24×8 segments), and operation across –40°C to 125°C junction temperature.

Technical Context

The MCXC244VFM integrates an Arm Cortex-M0+ core with a 48 MHz maximum clock, supported by internal high- and low-frequency oscillators-enabling USB FS operation without an external crystal. Its system architecture includes a low-leakage wake-up unit, micro trace buffer, and bit manipulation engine for deterministic real-time control.

Peripherals include two I²C, two SPI, one UART, two LPUARTs, a 12-bit ADC, ACMP with 6-bit DAC, and FlexIO for protocol emulation (e.g., I²S, SPI, UART variants). Power management supports very low-power run mode (54 µA/MHz) and deep sleep (1.96 µA with RAM + RTC retained).

Key Specifications

Pinout & Package

MCXC244VFM is housed in a 32-pin QFN (5 mm × 5 mm, 0.5 mm pitch) package with wettable flanks, optimized for automated optical inspection and thermal performance in compact designs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with MCXC242VFM, the MCXC244VFM provides 4× more Flash and 2× more SRAM for evolving firmware and data logging; versus MCXC244VFT, it offers identical core functionality in a smaller 32-pin footprint-reducing PCB cost and assembly complexity where GPIO count permits.

Availability

MCXC244VFM is available at Aetrix Electronics and suitable for smart power socket, home security sensor hub, and DC fan controller applications requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for MCXC244VFM 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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The MCX C Series-including MCXC244VFM-is designed specifically for cost-constrained, battery-operated HMI and control applications requiring integrated USB, low-power operation, and flexible peripheral emulation via FlexIO.

FAQ

Does MCXC244VFM require an external crystal for USB Full-Speed operation?

No, MCXC244VFM does not require an external crystal for USB Full-Speed operation. It uses an internally calibrated oscillator that meets USB FS timing requirements. This eliminates the need for a 12 MHz crystal and associated load capacitors, reducing BOM cost and PCB layout complexity. The internal oscillator is factory-trimmed and remains stable across voltage and temperature ranges specified for MCXC244VFM.

What is the minimum deep-sleep current of MCXC244VFM with RAM and RTC retained?

The minimum deep-sleep current of MCXC244VFM with RAM and RTC retained is 1.96 µA, measured under specified conditions (VDD = 3.0 V, Tj = 25°C). This value is confirmed in the official MCX C Series datasheet and enables multi-year battery operation in wake-on-event applications. Actual current may vary slightly depending on IO pin states and peripheral configuration prior to entering deep sleep.

How many GPIOs does MCXC244VFM provide, and are they all individually configurable?

MCXC244VFM provides 23 GPIOs, all of which are individually configurable for digital input/output, interrupt generation, DMA triggering, and peripheral function multiplexing. Each GPIO supports programmable pull-up/pull-down resistors and slew-rate control. Pin assignments are fixed per the 32QFN package layout and documented in the MCXC244VFM pinmux table in the reference manual.

Is segment LCD support built into MCXC244VFM, and what is its maximum configuration?

Yes, MCXC244VFM includes integrated segment LCD (SLCD) controller hardware capable of driving up to 24×8 or 28×4 segments. It supports static, 2-, 3-, or 4-mux configurations with internal charge pump and adjustable bias voltage. No external LCD bias generator is required. SLCD functionality is enabled only on specific GPIO pins designated in the MCXC244VFM datasheet and requires proper initialization via the SLCD peripheral registers.

What debug interface does MCXC244VFM support, and is Micro Trace Buffer available?

MCXC244VFM supports SWD (Serial Wire Debug) interface for programming and real-time debugging. It also includes a Micro Trace Buffer (MTB) for instruction trace capture without external debug probes. The MTB provides circular buffer storage for recent program flow, enabling post-mortem analysis of hard faults or timing anomalies. Both SWD and MTB are accessible via standard ARM-compliant debug tools including MCUXpresso IDE and Keil µVision.