NXP Semiconductors MKL24Z64VFT4

Overview

MKL24Z64VFT4 from NXP Semiconductors (formerly Freescale) is a 48 MHz ARM Cortex-M0+ microcontroller in 48-pin QFN package, featuring 64 KB flash, 8 KB SRAM, USB 2.0 Full/Low-Speed On-The-Go with on-chip transceiver and 5 V-to-3.3 V regulator, and ultra-low-power operation down to 0.12 µA in VLLS0 mode. It targets battery-powered HMI, sensor nodes, and USB-connected embedded control systems.

For engineers reviewing the MKL24Z64VFT4 datasheet, MKL24Z64VFT4 pinout, MKL24Z64VFT4 application, or MKL24Z64VFT4 equivalent, this page delivers verified technical context, low-power mode behavior, USB timing compliance, GPIO count (36), and validated alternative options for cost, power, or peripheral trade-offs.

Technical Context

The MKL24Z64VFT4 implements a single-core ARM Cortex-M0+ processor with Bit Manipulation Engine (BME) and Micro Trace Buffer (MTB) for debug visibility. Its clock system integrates MCG with FEI/FBI/BLPI/PEE modes, supporting internal 4 MHz IRC, external 32 kHz crystal, and up to 16 MHz high-frequency crystal - enabling precise USB frame timing and sub-millisecond wake-up from VLPS/VLLS modes.

System-level low-power architecture includes nine configurable power modes (RUN, WAIT, STOP, VLPR, VLPS, LLS, VLLS0–3), dynamic clock gating, and dedicated low-leakage wakeup unit. Peripheral integration covers dual UARTs (one low-power), two I²C modules, two SPIs, 12-bit SAR ADC with analog comparator + 6-bit DAC, six-channel TPM, and RTC with 32 kHz crystal support - all accessible while retaining full SRAM state in VLLS1/VLLS3.

Key Specifications

Pinout & Package

48-pin QFN (VFT4), 7 mm × 7 mm × 1 mm body, 0.5 mm pitch, exposed thermal pad. Pinout conforms to KL24P80M48SF0RM1 Rev 5 Section 5.2 - validated against official Freescale package drawing 98ASA00466D1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MKL24Z64VFT4, KL25Z32VFM4 reduces memory and I/O count but retains identical low-power modes and USB OTG capability; STM32L053R8T6 offers comparable flash/SRAM but lacks USB OTG and on-chip regulator, requiring external 3.3 V supply and VBUS management circuitry.

Availability

MKL24Z64VFT4 is available at Aetrix Electronics and suitable for USB-connected medical wearables, industrial sensor nodes, and automotive cabin controls requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MKL24Z64VFT4 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 roots in Freescale's Kinetis portfolio.

The Kinetis KL24 family was designed specifically for ultra-low-power, USB-enabled embedded applications - balancing performance, energy efficiency, and integration to accelerate development of battery-operated edge devices.

FAQ

What is the maximum operating frequency of the MKL24Z64VFT4 core?

The MKL24Z64VFT4 features an ARM Cortex-M0+ core rated for up to 48 MHz operation. This frequency is achievable using the Phase-Locked Loop (PLL) in PEE mode with an external crystal source, and is validated across the full –40°C to +105°C temperature range and 1.71–3.6 V supply voltage. The MKL24Z64VFT4 maintains timing compliance for USB full-speed communication at this clock rate.

Does the MKL24Z64VFT4 support USB On-The-Go functionality?

Yes, the MKL24Z64VFT4 integrates a USB 2.0 Full-/Low-Speed On-The-Go controller with an on-chip transceiver and a 5 V-to-3.3 V regulator. It supports both host and device roles, automatic VBUS sensing, and session request protocol (SRP) - enabling self-powered peripherals to initiate communication with a host without external USB switch ICs or level shifters.

How many GPIO pins does the MKL24Z64VFT4 provide in its 48-pin QFN package?

The MKL24Z64VFT4 in the 48-pin QFN (VFT4) package provides 36 general-purpose input/output pins, as confirmed in the Ordering Information table of KL24P80M48SF0 datasheet Rev 5. These include dedicated USB, crystal, reset, and debug pins - leaving 36 pins available for application use with configurable pull-up/pull-down, slew rate, and drive strength.

What is the lowest power consumption mode supported by the MKL24Z64VFT4?

The MKL24Z64VFT4 achieves its lowest active power state in Very-Low-Leakage Stop Mode 0 (VLLS0) with PORPO = 1, consuming just 0.12 µA at 25°C and 3.0 V. In this mode, the 8 KB SRAM and registers retain full state, and wake-up can occur within 4 µs via GPIO, RTC alarm, or low-leakage wakeup unit - making it ideal for infrequent-event monitoring in battery-constrained designs.

Is the MKL24Z64VFT4 qualified for automotive applications?

The MKL24Z64VFT4 is specified for operation from –40°C to +105°C and meets JEDEC JESD22-A103 storage and J-STD-020 reflow requirements, qualifying it for under-hood and cabin automotive applications. While not AEC-Q100 certified out-of-box, its electrical and thermal specifications align with Tier-2 automotive subsystem requirements - commonly deployed in HVAC controls, lighting modules, and diagnostic interfaces.