NXP Semiconductors MKL14Z64VFM4R

Overview

MKL14Z64VFM4 from NXP Semiconductors (formerly Freescale) is a 32-bit ARM Cortex-M0+ microcontroller designed for ultra-low-power embedded applications. It operates at up to 48 MHz, integrates 64 KB flash and 8 KB SRAM, supports 28 GPIOs, and delivers 47 μA/MHz run power consumption in very low power run mode - enabling battery-powered sensor nodes and portable medical devices.

For engineers reviewing the MKL14Z64VFM4 datasheet, MKL14Z64VFM4 pinout, MKL14Z64VFM4 application, or MKL14Z64VFM4 equivalent, key selection criteria include its 32-pin QFN package, -40°C to 105°C operating temperature, dual UART/I²C/SPI interfaces, 12-bit SAR ADC, and support for nine low-power modes including VLLS0 with 0.12 μA typical current draw.

Technical Context

The MKL14Z64VFM4 implements an ARM Cortex-M0+ core with Bit Manipulation Engine (BME) and Micro Trace Buffer (MTB), paired with a multi-mode clock system featuring internal 4 MHz/32 kHz IRC and external crystal support (32 kHz–32 MHz). Its memory subsystem includes zero-wait-state flash and configurable SRAM retention during low-power states.

System-level peripherals include a 6-channel Timer/PWM (TPM), two 2-channel TPM modules, LPTMR, RTC, COP watchdog, and DMA supporting 63 request sources. Analog integration comprises a 12-bit SAR ADC with programmable reference, analog comparator with integrated 6-bit DAC, and bandgap voltage reference (1.00 V typical).

Key Specifications

Pinout & Package

Package: 32-pin QFN (VFM4), 5 mm × 5 mm × 1 mm, 0.5 mm pitch, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MKL14Z64VFM4, MKL25Z64VLH4 offers greater memory and USB but increases footprint and BOM cost, while MKE02Z64VQH2 reduces feature set and low-power capability - making MKL14Z64VFM4 the optimal balance of size, power, and integration for compact battery-operated edge nodes.

Availability

MKL14Z64VFM4 is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical devices, and industrial HMI panels requiring stable component supply across long-lifecycle deployments.

Supply support for MKL14Z64VFM4 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 markets, with deep expertise in low-power microcontrollers and edge AI processing.

The Kinetis KL14 family - including MKL14Z64VFM4 - was engineered for entry-level 32-bit embedded applications demanding ultra-low power, small footprint, and robust peripheral integration in cost-sensitive designs.

FAQ

What is the maximum operating frequency of the MKL14Z64VFM4?

The MKL14Z64VFM4 features an ARM Cortex-M0+ core rated for up to 48 MHz operation in normal run mode. In very low power run (VLPR) mode, the maximum core frequency is 4 MHz. The device supports multiple clock sources including internal 4 MHz/32 kHz IRC and external crystals from 32 kHz to 32 MHz, with configurable PLL and clock gating to optimize performance versus power.

Does the MKL14Z64VFM4 support USB connectivity?

No, the MKL14Z64VFM4 does not include a USB controller or physical transceiver. It provides UART, I²C, and SPI interfaces for serial communication. For USB-enabled designs, engineers should consider the pin-compatible MKL25Z64VLH4 or MKL26Z128VLH4 variants within the broader Kinetis L family, which integrate full-speed USB 2.0 OTG controllers.

What is the minimum supply voltage for the MKL14Z64VFM4 during active operation?

The MKL14Z64VFM4 operates across a supply voltage range of 1.71 V to 3.6 V for both digital (VDD) and analog (VDDA) domains. At 1.71 V, the device supports reduced maximum frequencies (e.g., 24 MHz core in FEI mode) and retains full peripheral functionality except for flash programming, which requires ≥1.71 V but is validated down to 1.8 V per datasheet specifications.

How many GPIO pins does the MKL14Z64VFM4 expose in its 32-pin QFN package?

The MKL14Z64VFM4 in the 32-pin QFN (VFM4) package provides 28 general-purpose I/O pins, as confirmed by the ordering information table and pin multiplexing documentation. These include PTA0–PTA7, PTB0–PTB7, PTC0–PTC7, and PTD0–PTD7, with specific alternate functions assigned per pin in the reference manual.

What low-power modes are supported by the MKL14Z64VFM4, and what is the lowest achievable current draw?

The MKL14Z64VFM4 supports nine low-power modes, including VLLS0 (Very Low-Leakage Stop Mode 0), which achieves a typical current draw of 0.12 μA at 3.0 V and 25°C when PORPO = 1. This mode retains full register and RAM state while disabling all clocks except optional 32 kHz or 4 MHz references - ideal for wake-on-button or wake-on-RX applications in energy-harvesting or battery-powered systems.