NXP Semiconductors MK40DX128VLL7

Overview

MK40DX128VLL7 from NXP Semiconductors (formerly Freescale) is a 32-bit ARM Cortex-M4 microcontroller with DSP extension, 128 KB flash, 16 KB SRAM, operating at up to 72 MHz, supporting industrial temperature range (–40 to 105°C), 1.71–3.6 V supply, and integrated USB OTG, CAN, dual ADCs, DAC, and LCD controller. It targets embedded control in motor drives and industrial HMI.

For engineers reviewing the MK40DX128VLL7 datasheet, MK40DX128VLL7 pinout, MK40DX128VLL7 application, or MK40DX128VLL7 equivalent, key selection considerations include its 100-pin LQFP package, 72 MHz max CPU frequency, dual 16-bit SAR ADCs with PGA, 12-bit DAC, and FlexMemory support - critical for real-time sensor fusion and low-power human-machine interface designs.

Technical Context

The MK40DX128VLL7 implements the ARMv7E-M architecture with hardware divide, single-cycle MAC, and SIMD instructions. Its MCG clock system supports multiple modes including FEE (72 MHz), FEI (4 MHz VLPR), and bypass configurations using external crystals (3–32 MHz or 32 kHz). The device integrates a 16-channel DMA controller with scatter-gather support and configurable channel priorities.

Peripherals are organized into clock-gated modules: two independent ADCs each with programmable gain amplifier (x1–x64), three analog comparators with internal 6-bit DACs, eight-channel PWM timer with dead-time insertion, and a full-speed USB OTG controller with on-chip transceiver. Security includes hardware CRC-32 and 128-bit unique ID.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm), lead-free, RoHS-compliant, thermal pad exposed on bottom.

Key Features

Applications

Equivalent & Alternatives

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

Compared with K22FN512VLH12 and MKE15Z128VLH7, the MK40DX128VLL7 uniquely balances mid-range performance (72 MHz), integrated analog front-end (dual ADC+DAC+PGA), and mixed-signal peripherals (LCD+CAN+USB) in a single 100-pin package - making it optimal for space-constrained industrial controllers where display, fieldbus, and PC connectivity coexist.

Availability

MK40DX128VLL7 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, portable diagnostic tools, and human-machine interface panels requiring stable component supply across extended temperature and long product lifecycles.

Supply support for MK40DX128VLL7 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 edge processing.

The Kinetis K40 family - including the MK40DX128VLL7 - was designed specifically for industrial and appliance control applications demanding robust analog integration, real-time responsiveness, and extended temperature operation.

FAQ

What is the maximum operating frequency of the MK40DX128VLL7?

The MK40DX128VLL7 operates at a maximum CPU frequency of 72 MHz in normal run mode. This is achieved using the Multipurpose Clock Generator (MCG) in FEE mode with an external 3–32 MHz crystal. In Very-Low-Power Run (VLPR) mode, the maximum frequency is reduced to 4 MHz to minimize power consumption while maintaining peripheral functionality. The MK40DX128VLL7 datasheet specifies these limits under defined voltage and temperature conditions.

Does the MK40DX128VLL7 support USB device and host functionality?

Yes, the MK40DX128VLL7 integrates a full-/low-speed USB On-The-Go (OTG) controller with an on-chip transceiver, enabling both device and host roles without external PHY components. It supports standard USB 2.0 protocols and includes dedicated USB voltage regulator (VREG) circuitry. The MK40DX128VLL7 USB module is fully compliant with USB Battery Charging Specification v1.2 for downstream port detection.

How much SRAM does the MK40DX128VLL7 have, and is it battery-backed?

The MK40DX128VLL7 includes 16 KB of general-purpose SRAM. While the main SRAM is not battery-backed, the device features a separate 2 KB of RAM within the RTC module that remains powered during VLLS modes using the VBAT supply. This RTC RAM retains time-critical data such as timestamps and alarm settings during deep sleep. The MK40DX128VLL7 datasheet confirms this partitioning in Section 6.2 "System Modules".

Can the MK40DX128VLL7 drive a segment LCD directly?

Yes, the MK40DX128VLL7 contains an integrated segment LCD controller supporting up to 36 frontplanes and 8 backplanes (or 40 frontplanes and 4 backplanes), depending on pin configuration. It provides programmable contrast control, blinking, and charge recovery to extend LCD lifetime. No external driver IC is required for compatible displays. The MK40DX128VLL7 LCD controller is documented in Section 6.9.2 of the K40 Sub-Family Data Sheet.

What low-power modes are available on the MK40DX128VLL7?

The MK40DX128VLL7 offers seven low-power modes: RUN, WAIT, VLPR, STOP, VLPS, LLS, and VLLS (with sub-modes VLLS0–VLLS3). VLLS3 achieves as low as 1.9 µA at –40 to 25°C with RTC and RAM retention enabled. All modes support wake-up via GPIO, RTC alarm, or peripheral interrupts. The MK40DX128VLL7 power consumption behaviors are detailed in Table 6 of the K40 Sub-Family Data Sheet Rev. 3.