NXP Semiconductors MK40DX256VLQ10

Overview

MK40DX256VLQ10 from NXP Semiconductors (formerly Freescale) is a 32-bit ARM Cortex-M4 microcontroller with DSP extensions, operating at up to 100 MHz. It integrates 256 KB on-chip flash memory, 128 KB RAM, dual 16-bit SAR ADCs with integrated PGA, two 12-bit DACs, two CAN interfaces, USB OTG, and an LCD controller - designed for industrial control and human-machine interface applications requiring real-time signal processing and low-power operation.

For engineers reviewing the MK40DX256VLQ10 datasheet, MK40DX256VLQ10 pinout, MK40DX256VLQ10 application, or MK40DX256VLQ10 equivalent, key selection considerations include its FlexMemory architecture (256 KB flash + 4 KB FlexRAM), -40°C to 105°C extended temperature rating, LQFP-144 package, and support for multiple low-power modes including VLLS1/VLLS3 with sub-10 µA stop-current performance.

Technical Context

The MK40DX256VLQ10 implements an ARM Cortex-M4 core with hardware-accelerated DSP instructions and a Memory Protection Unit (MPU) supporting multi-master protection. Its clock system includes a 3–32 MHz main crystal oscillator, 32 kHz RTC oscillator, and a Multi-Purpose Clock Generator (MCG) enabling flexible PLL-based frequency synthesis up to 100 MHz.

Peripheral integration includes eight-channel motor-control/PWM timers, two quadrature decoder timers, real-time clock (RTC), programmable delay block, carrier modulator transmitter, and security modules such as hardware CRC and 128-bit unique chip ID. Analog subsystems feature transimpedance amplifiers, three analog comparators with embedded 6-bit DACs, and voltage reference circuitry.

Key Specifications

Pinout & Package

LQFP-144 (20 mm × 20 mm, 0.5 mm pitch) package with exposed thermal pad - optimized for thermal dissipation in high-density industrial PCB layouts and compatible with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with K22F512VLH12 and STM32F407VGT6, the MK40DX256VLQ10 offers unique value in integrated human-machine interface peripherals (LCD/TSI), FlexMemory for reliable data logging, and ultra-low-power stop modes - making it optimal for cost-sensitive, display-driven industrial edge devices where floating-point math is not dominant.

Availability

MK40DX256VLQ10 is available at Aetrix Electronics and suitable for industrial motor control, medical diagnostic equipment, automotive body electronics, smart energy metering, and portable instrumentation requiring stable component supply and long-term lifecycle support.

Supply support for MK40DX256VLQ10 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, IoT, mobile, and communication infrastructure markets.

The MK40DX256VLQ10 belongs to the Kinetis K40 sub-family - engineered for real-time control, human-machine interface, and low-power embedded applications demanding integrated analog, communication, and display capabilities in a single chip.

FAQ

What is the maximum operating frequency of the MK40DX256VLQ10?

The MK40DX256VLQ10 operates at up to 100 MHz using its ARM Cortex-M4 core. This frequency is achieved via the internal Multi-Purpose Clock Generator (MCG) in FEE mode with PLL enabled. The device delivers 1.25 Dhrystone MIPS per MHz, resulting in 125 DMIPS performance. All timing specifications - including flash access, peripheral clocks, and bus interfaces - are validated at this maximum frequency under rated voltage (1.71–3.6 V) and temperature (-40°C to 105°C) conditions.

Does the MK40DX256VLQ10 support USB device functionality?

Yes, the MK40DX256VLQ10 includes a full-/low-speed USB On-The-Go (OTG) controller with an integrated transceiver. It supports USB device mode without requiring an external PHY, enabling HID, CDC, or mass-storage class implementations. The USB_DP and USB_DM pins are routed to dedicated LQFP-144 package terminals and comply with USB 2.0 specifications. Internal voltage regulation and ESD protection meet USB electrical requirements across the full operating voltage range.

What type of memory architecture does the MK40DX256VLQ10 use?

The MK40DX256VLQ10 uses a FlexMemory architecture consisting of 256 KB program flash memory and 4 KB FlexRAM. Unlike standard flash-only MCUs, FlexRAM can be configured as EEPROM-emulation memory or high-speed RAM, enabling atomic write operations and wear-leveling without flash erase cycles. This architecture supports reliable data logging during power loss and fast context switching in real-time applications - all within the same die as the Cortex-M4 core.

Can the MK40DX256VLQ10 drive a segment LCD display directly?

Yes, the MK40DX256VLQ10 integrates a dedicated segment LCD controller capable of driving up to 40 frontplanes and 8 backplanes (or 44 frontplanes and 4 backplanes) depending on configuration. It supports static, 2-, 3-, and 4-multiplex modes with programmable bias and contrast control. No external display driver IC is required, reducing BOM cost and simplifying layout. The controller operates independently of the CPU using DMA and supports partial display updates to minimize power consumption.

What low-power modes are available on the MK40DX256VLQ10?

The MK40DX256VLQ10 supports seven low-power modes: RUN, WAIT, STOP, VLPR, VLPS, LLS, and VLLSx (VLLS0–VLLS3). In VLLS3 mode, typical current consumption is 3.0 µA at 3.0 V and -40°C to 25°C ambient, retaining RAM, RTC, and selected wake-up sources. VLLS1 achieves 2.1 µA under same conditions. These modes are controlled via the System Mode Controller (SMC) and supported by hardware features like low-leakage wakeup unit and autonomous peripheral operation - critical for battery-powered edge nodes.