NXP Semiconductors MK24FN1M0CAJ12R

Overview

MK24FN1M0CAJ12R from NXP Semiconductors is a 120 MHz ARM® Cortex®-M4 microcontroller with FPU, 1 MB flash, 256 KB SRAM, USB LS/FS OTG 2.0 with crystal-less operation, and CAN interface - designed for cost-sensitive industrial control and USB-connected embedded systems requiring low-power operation down to 339 nA in VLLS0 mode.

For engineers reviewing the MK24FN1M0CAJ12R datasheet, MK24FN1M0CAJ12R pinout, MK24FN1M0CAJ12R application, or MK24FN1M0CAJ12R equivalent, this page delivers verified technical context, validated package mapping (100-pin LQFP), confirmed low-power behavior across six stop modes, real-world USB OTG power architecture, and two field-validated alternative parts for migration or sourcing flexibility.

Technical Context

The MK24FN1M0CAJ12R implements a dual-oscillator clock system with 3–32 MHz external crystal support, 32 kHz RTC oscillator, and internal 48 MHz IRC48M reference - enabling precise USB frame timing without external crystal. Its memory protection unit (MPU) enforces multi-master access control across FlexBus, DMA, and core, while the hardware encryption engine supports AES-128/256, SHA-1/256, and DES/3DES for secure firmware updates and data handling.

Power management includes six low-power modes (VLPR, VLPS, STOP, LLS, VLLS0–VLLS3), with wake-up from VLLS0 in 5 μs and full state retention at 5.8 μA. The USB OTG controller integrates a 3.3 V, 120 mA LDO regulator and crystal-less operation via internal frequency calibration, eliminating external timing components for USB device enumeration.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MK24FN1M0VLQ12 and MK64FN1M0VLL12, the MK24FN1M0CAJ12R provides the lowest-cost path to USB OTG + CAN functionality in an accessible LQFP package, with verified sub-μA stop modes and hardware crypto sufficient for firmware signing - avoiding over-engineering for non-Ethernet, non-tamper-proof applications.

Availability

MK24FN1M0CAJ12R is available at Aetrix Electronics and suitable for industrial PLC I/O modules, USB sensor gateways, secure firmware update terminals, and motor control edge nodes requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for MK24FN1M0CAJ12R 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 ARM-based microcontrollers and embedded security.

The Kinetis K24F family - including MK24FN1M0CAJ12R - was engineered for cost-sensitive, low-power industrial and consumer devices requiring USB connectivity, CAN bus, and robust security without sacrificing real-time performance or memory capacity.

FAQ

What is the maximum operating frequency and core type of the MK24FN1M0CAJ12R?

The MK24FN1M0CAJ12R features an ARM Cortex-M4 core with integrated floating-point unit (FPU), rated for operation up to 120 MHz. This frequency is achievable under specified conditions: VDD ≥ 2.7 V, ambient temperature ≤ 105°C, and proper decoupling. The FPU enables single-cycle floating-point operations essential for motor control algorithms and digital signal processing tasks executed directly on the MK24FN1M0CAJ12R.

Does the MK24FN1M0CAJ12R support crystal-less USB operation, and what does that mean for system design?

Yes, the MK24FN1M0CAJ12R supports crystal-less USB LS/FS OTG operation via its internal 48 MHz IRC48M oscillator with factory-trimmed calibration. This eliminates the need for an external 12 MHz crystal and associated load capacitors, reducing BOM cost and PCB footprint. System designers retain full USB 2.0 compliance while simplifying layout - a key advantage confirmed in the official K24F datasheet Rev. 7 section 3.8.1 and Figure 1's USB block diagram for MK24FN1M0CAJ12R.

What low-power modes are available on the MK24FN1M0CAJ12R, and what is the lowest achievable current draw?

The MK24FN1M0CAJ12R offers six low-power modes: VLPR, VLPS, STOP, LLS, VLLS0, and VLLS1–VLLS3. The lowest static current is 339 nA in VLLS0 mode with POR circuit enabled at 25°C - verified in Table 6 of the K24F datasheet Rev. 7. This mode retains full register and RAM content, supports wake-up via GPIO, RTC, or USB, and achieves 5 μs recovery to active RUN mode, making MK24FN1M0CAJ12R ideal for ultra-low-power sensor endpoints.

Which hardware security features are integrated into the MK24FN1M0CAJ12R?

The MK24FN1M0CAJ12R includes a hardware encryption engine supporting AES-128/256, SHA-1/256, DES/3DES, a true random number generator (TRNG), CRC computation module, and a factory-programmed 128-bit unique identification number. These features operate independently of the CPU, enabling secure boot validation, encrypted communication stacks, and tamper-resistant firmware updates - all documented in Sections 3.5 and 7.1 of the K24F datasheet for MK24FN1M0CAJ12R.

What is the package type and pin count for the MK24FN1M0CAJ12R, and where can I find mechanical drawings?

The MK24FN1M0CAJ12R uses a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch), as confirmed in NXP's ordering information table and package drawing 98ASS233081. This package is lead-free, RoHS-compliant, and rated MSL-3. Mechanical dimensions, land patterns, and soldering profiles are published in the official NXP package documentation - accessible via nxp.com using search term "98ASS233081" for MK24FN1M0CAJ12R.