NXP Semiconductors MK11DX256VMC5

Overview

MK11DX256VMC5 from NXP Semiconductors (formerly Freescale) is a 32-bit ARM Cortex-M4 microcontroller with DSP extension and optional single-precision FPU, operating at 50 MHz, featuring 256 KB flash, 64 KB FlexNVM (emulating EEPROM), 32 KB SRAM, and integrated 16-bit ADC, 12-bit DAC, and cryptographic acceleration unit (CAU). It targets low-power industrial sensing and secure HMI applications.

For engineers reviewing the MK11DX256VMC5 datasheet, MK11DX256VMC5 pinout, MK11DX256VMC5 application, or MK11DX256VMC5 equivalent, key selection criteria include its 50 MHz Cortex-M4 core with CAU, 64 KB FlexNVM for field-upgradable nonvolatile data storage, tamper-detect capability, 16-bit ADC with PGA, and 32-pin QFN (5×5 mm) package with 5 V-tolerant I/O.

Technical Context

The MK11DX256VMC5 implements an ARM Cortex-M4 core with DSP instructions and optional single-precision floating-point unit, supporting deterministic real-time signal processing. It integrates a cryptographic acceleration unit (CAU) for DES, 3DES, AES, MD5, SHA-1, and SHA-256, alongside hardware tamper detection for secure boot and key storage.

Its analog subsystem includes a 16-bit SAR ADC with programmable gain amplifier (PGA), a 12-bit DAC, and on-chip voltage reference - enabling high-accuracy sensor signal conditioning without external components. Low-power operation spans 10 modes, with Stop current <500 nA and 4 µs wake-up time.

Key Specifications

Pinout & Package

Package: 32-pin QFN (5×5 mm, 0.5 mm pitch), RoHS-compliant, moisture-sensitive level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar secure, low-power MCU applications.

Compared with MK11DX256VMC5, MK11DX128AVMC5 reduces flash capacity while retaining full security and analog capability, whereas MK12DX256VMC5 trades CAU/tamper for CAN connectivity - making each optimal for distinct system-level security vs. communication priorities.

Availability

MK11DX256VMC5 is available at Aetrix Electronics and suitable for electronic point-of-sale terminals, remote industrial sensors, secure access panels, and gaming peripherals requiring stable component supply and long-term lifecycle support.

Supply support for MK11DX256VMC5 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in ARM-based MCUs and edge AI processing.

The MK11DX256VMC5 belongs to the Kinetis K1x family - designed specifically for cost-sensitive, ultra-low-power industrial and consumer devices requiring integrated analog precision, hardware security, and flexible nonvolatile memory architecture.

FAQ

What is the maximum operating frequency of the MK11DX256VMC5?

The MK11DX256VMC5 operates at a maximum core frequency of 50 MHz. This speed is optimized for ultra-low-power operation while delivering sufficient compute bandwidth for real-time sensor processing and secure communications. The MK11DX256VMC5 achieves this with tight power-performance trade-offs across its 10 low-power modes, ensuring consistent timing behavior in battery-constrained applications.

Does the MK11DX256VMC5 include hardware cryptographic acceleration?

Yes, the MK11DX256VMC5 integrates a Cryptographic Acceleration Unit (CAU) supporting AES, DES, 3DES, MD5, SHA-1, and SHA-256 algorithms. This hardware block offloads encryption/decryption tasks from the Cortex-M4 core, reducing CPU utilization and latency. The MK11DX256VMC5 uses CAU for secure boot, OTA firmware validation, and encrypted data logging without requiring external crypto ICs.

What type of nonvolatile memory does the MK11DX256VMC5 provide beyond main flash?

The MK11DX256VMC5 includes 64 KB of FlexNVM - a reconfigurable memory block that can be partitioned into up to 16 KB of byte-erasable, wear-leveling-capable emulated EEPROM. Unlike standard flash, FlexNVM supports true EEPROM semantics (single-byte write/erase), making it ideal for storing calibrated sensor offsets, device IDs, or secure logs. This capability is intrinsic to the MK11DX256VMC5 and requires no external memory.

Is the MK11DX256VMC5 pin-compatible with other Kinetis K1x devices?

The MK11DX256VMC5 uses a 32-pin QFN (5×5 mm) package and shares pinout compatibility with other K1x MCUs in the same package variant, including MK11DX128AVMC5 and MK12DX256VMC5. However, peripheral mapping and feature enablement differ - for example, only MK11DX256VMC5 and MK11DX128AVMC5 include CAU and tamper detection. Pin compatibility enables footprint reuse but requires firmware validation per feature set.

What analog peripherals are integrated into the MK11DX256VMC5?

The MK11DX256VMC5 integrates a 16-bit SAR ADC with programmable gain amplifier (PGA), a 12-bit DAC, and an internal voltage reference. These analog resources support high-fidelity signal acquisition from low-amplitude sensors (e.g., load cells, thermopiles) and analog output generation for actuator control or audio feedback. All are directly accessible through dedicated pins on the MK11DX256VMC5 and require no external signal-conditioning circuitry in typical implementations.