NXP Semiconductors MKL24Z32VLK4

Overview

MKL24Z32VLK4 from NXP Semiconductors (formerly Freescale) is a 48 MHz ARM Cortex-M0+ microcontroller in an 80-pin LQFP package, featuring 32 KB flash, 4 KB SRAM, USB 2.0 Full/Low-Speed On-The-Go with on-chip transceiver and 5 V-to-3.3 V regulator, and up to 66 GPIOs. It delivers ultra-low-power operation down to 0.12 µA in VLLS0 mode with full state retention, targeting battery-powered industrial sensors and portable HMI devices.

For engineers reviewing the MKL24Z32VLK4 datasheet, MKL24Z32VLK4 pinout, MKL24Z32VLK4 application, or MKL24Z32VLK4 equivalent, this page provides verified technical context, low-power mode timing behavior, USB transceiver electrical specs, ADC/DAC analog subsystem details, and validated alternative options for cost-optimized or feature-extended migration paths.

Technical Context

The MKL24Z32VLK4 implements a single-core ARM Cortex-M0+ processor with Bit Manipulation Engine (BME) and Micro Trace Buffer (MTB), executing from zero-wait-state flash at up to 48 MHz in Run mode or 4 MHz in Very-Low-Power Run (VLPR) mode. Its clock system integrates a Multi-purpose Clock Generator (MCG) supporting FEI, FBE, BLPI, and BLPE modes, with internal 4 MHz IRC and 1 kHz LPO plus external crystal support (32 kHz–32 MHz).

System-level power management includes nine low-power modes-VLPR, VLPS, LLS, STOP, and four VLLS variants-with wakeup latency as low as 4 µs from VLPS/STOP and 42 µs from VLLS3. Peripheral adders (e.g., +22 µA for CMP, +366 µA for ADC, +56 µA for 4 MHz IRC) are characterized across –40°C to 105°C for accurate budgeting in energy-constrained designs.

Key Specifications

Pinout & Package

80-pin LQFP package (12 mm × 12 mm, 0.5 mm pitch, 1.4 mm height), RoHS-compliant, moisture sensitivity level 3 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MKL24Z32VLK4, MKL24Z64VLK4 offers double flash capacity without sacrificing low-power performance or USB functionality, while MKE02Z64VLK4 trades USB OTG and transceiver integration for lower unit cost in fixed-function peripheral applications.

Availability

MKL24Z32VLK4 is available at Aetrix Electronics and suitable for industrial sensor nodes, USB human interface devices, portable medical monitors, and smart home gateway auxiliary controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MKL24Z32VLK4 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, and mobile applications, with roots in Freescale's Kinetis portfolio.

The Kinetis KL24 family was designed as an entry-level 32-bit MCU platform emphasizing ultra-low-power operation, USB integration, and software compatibility across Kinetis L and K2x families - targeting cost-sensitive, battery-powered edge devices.

FAQ

What is the maximum operating frequency of the MKL24Z32VLK4 core?

The MKL24Z32VLK4 features an ARM Cortex-M0+ core rated for up to 48 MHz in Run mode. This frequency is achievable using the MCG in PEE mode with an external crystal or internal reference clock, and it supports zero-wait-state execution from flash memory. The core can also operate at reduced frequencies-including 4 MHz in Very-Low-Power Run (VLPR) mode-to optimize power consumption for background tasks.

Does the MKL24Z32VLK4 include an integrated USB transceiver?

Yes, the MKL24Z32VLK4 includes a full-speed/low-speed USB 2.0 On-The-Go controller with an integrated transceiver and a 5 V-to-3.3 V regulator. This eliminates the need for external PHY components and simplifies design for self-powered USB devices. The USB_DP and USB_DM pins are routed directly to the internal transceiver and require only standard series termination and pull-up resistors per USB specification.

How many GPIO pins does the MKL24Z32VLK4 support in its 80-pin LQFP package?

The MKL24Z32VLK4 in the 80-pin LQFP (LK) package provides up to 66 general-purpose input/output (GPIO) pins. These are distributed across five ports (PTA–PTE), with most pins supporting multiple functions including UART, I²C, SPI, TPM, ADC, and comparator inputs. All GPIOs include programmable pull-up/pull-down resistors (20–50 kΩ) and interrupt-on-change capability.

What is the lowest power consumption mode supported by the MKL24Z32VLK4?

The MKL24Z32VLK4 supports Very-Low-Leakage Stop Mode 0 (VLLS0) with typical current consumption of 0.12 µA at 25°C when SMC_STOPCTRL[PORPO] = 1 and brownout detection is disabled. In this mode, the core, peripherals, and clocks are halted while retaining full register and RAM contents, enabling sub-microamp wake-on-pin or RTC alarm with 42–115 µs recovery time depending on the VLLS variant selected.

Is the MKL24Z32VLK4 compatible with other Kinetis L-series MCUs?

Yes, the MKL24Z32VLK4 is pin-compatible and software-compatible with other members of the Kinetis L family-including KL14, KL25, and KL26-as well as the Kinetis K2x series. This compatibility enables scalable design reuse across performance tiers, allowing migration from 32 KB to 128 KB flash variants without PCB redesign or major firmware changes, provided peripheral usage aligns with pin multiplexing constraints.