NXP Simplifies Secure Industrial Connectivity with New MCX A5 MCUs
NXP Semiconductors has introduced the MCX A5 family of microcontrollers (MCUs), designed to simplify secure connectivity for industrial and IoT edge applications. This new family addresses the growing need to connect more industrial edge devices, enabling access to real-time operational data crucial for advanced analytics, automation, and industrial edge AI applications.
Many existing industrial edge devices rely on legacy connections like RS-232 and RS-485 or remain disconnected, limiting their potential. The MCX A5 family aims to overcome these limitations by extending IP-based connectivity deeper into industrial systems, connecting more sensors, actuators, and controllers while reducing system cost and complexity.
What sets the MCX A5 family apart is its unique combination of an integrated 10BASE-T1S Ethernet digital PHY, topology discovery capability, and robust security features including post-quantum cryptography (PQC). This makes it the industry’s first wired MCU to offer topology discovery with 10BASE-T1S Ethernet, preparing designs for evolving cybersecurity requirements and enabling manufacturers to transform industrial nodes into connected, intelligent endpoints.
Specifications
| Product | Core | Max Frequency | Flash | RAM | Ethernet PHY | Security | Connectivity Interfaces |
|---|---|---|---|---|---|---|---|
| MCX A5 family | Arm Cortex-M33 | 240 MHz | Up to 2 MB | 640 KB | 10BASE-T1S Digital | PSA Certified Level 3, Post-quantum Cryptography | UART, I²C, I3C, SPI, CAN FD, High-Speed USB, FlexIO |
Key Features
- Integrated 10BASE-T1S Ethernet digital PHY for compact, low-cost multi-drop networks.
- Industry-first topology discovery capability on a wired MCU, improving network visibility.
- Secured by post-quantum cryptography (PQC) to address evolving cybersecurity threats.
- PSA Certified Level 3 security with a PQC-based hardware root of trust.
- Supports secure boot, secure firmware updates, secure attestation, and secure debug authentication.
- Built on an Arm Cortex-M33 core, running up to 240 MHz.
- Offers up to 2 MB Flash and 640 KB RAM for flexible application development.
- Rich set of connectivity interfaces including UART, I²C, I3C, SPI, CAN FD, High-Speed USB, and FlexIO.
- Selected devices support the Rust programming language for modern, memory-safe software development.
- Supported by NXP's MCUXpresso software and tools ecosystem, including LTS SDK releases and Visual Studio Code integration.
- Compatible with Zephyr RTOS, offering flexibility for commercial and open-source software environments.
- Can be paired with NXP's TJF1410 10BASE-T1S PMD transceiver for a complete Single Pair Ethernet (SPE) solution.
Applications
- Secure connectivity for industrial and IoT edge applications.
- Extending IP-based connectivity deeper into industrial systems.
- Enabling real-time data access for industrial analytics and automation.
- Predictive maintenance and intelligent energy management.
- Industrial automation and edge AI applications.
- Building automation systems.
- Energy infrastructure.
- Distributed edge applications requiring simplified networking.
Availability
The new NXP MCX A5 family of microcontrollers is now in sampling, offering a scalable solution for secure industrial and IoT edge applications with advanced connectivity, integrated 10BASE-T1S Ethernet, and enhanced security capabilities. For product details, specifications, documentation and development resources, visit the NXP MCX A5 product page.
