NXP Semiconductors MKL04Z32VLC4

Overview

MKL04Z32VLC4 from NXP Semiconductors (formerly Freescale) is a 32-bit ARM Cortex-M0+ microcontroller in 32-pin LQFP package, delivering up to 48 MHz operation with 32 KB flash and 4 KB SRAM. It supports nine low-power modes, includes a 12-bit SAR ADC, one I²C, one SPI, one low-power UART, six-channel TPM, and real-time clock - deployed in battery-powered sensor nodes and industrial control interfaces.

For engineers reviewing the MKL04Z32VLC4 datasheet, MKL04Z32VLC4 pinout, MKL04Z32VLC4 application, or MKL04Z32VLC4 equivalent, key selection criteria include its 28 GPIO count, -40°C to +105°C operating range, ultra-low-power stop mode current of 0.3–0.54 µA (VLLS0), 48 MHz core performance, and LQFP-32 mechanical compatibility for space-constrained embedded designs.

Technical Context

The MKL04Z32VLC4 implements an ARM Cortex-M0+ core with Bit Manipulation Engine and Micro Trace Buffer, paired with a multi-mode clock generator (MCG) supporting internal 4 MHz/32 kHz IRC and external crystal oscillators (3–32 MHz). Its power architecture integrates clock gating, zero-wait-state flash, and nine configurable low-power states including VLLS0 (0.3 µA typical).

Peripherals are tightly coupled to low-power operation: the 12-bit ADC operates down to VLPR mode, the CMP includes a 6-bit DAC and programmable reference, and the TPM/LPTMR support precise timing in sub-µA sleep states. Debug uses SWD with full state retention across all stop modes.

Key Specifications

Pinout & Package

32-pin LQFP (7 × 7 × 1.4 mm, 0.8 mm pitch), 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 STM32L031K6T6 and EFM32ZG108F32, MKL04Z32VLC4 offers superior low-power efficiency (0.3 µA VLLS0), richer timer/PWM resources (6-channel TPM), and integrated analog features - making it optimal for battery-constrained sensor hubs requiring both precision analog front-end and deterministic real-time control.

Availability

MKL04Z32VLC4 is available at Aetrix Electronics and suitable for smart sensor nodes, industrial control interfaces, medical wearables, energy harvesting endpoints, and battery-backed RTU applications requiring stable component supply across extended product lifecycles.

Supply support for MKL04Z32VLC4 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 deep expertise in ARM-based microcontrollers and edge processing.

The Kinetis KL04 family - including MKL04Z32VLC4 - was designed for ultra-low-power, cost-sensitive embedded systems where small footprint, long battery life, and integrated analog peripherals are critical, such as wireless sensor networks and portable medical devices.

FAQ

What is the maximum operating frequency of the MKL04Z32VLC4?

The MKL04Z32VLC4 features an ARM Cortex-M0+ core rated for up to 48 MHz operation. This maximum frequency is achievable when powered within the specified 1.71–3.6 V supply range and using the FBE (FEI bypassed external) clock mode with an external crystal oscillator. The device maintains full functionality-including flash execution, peripheral operation, and debug access-at this speed, supported by its zero-wait-state flash controller.

Does the MKL04Z32VLC4 support hardware debugging, and what interface is used?

Yes, the MKL04Z32VLC4 supports full hardware debugging via the Serial Wire Debug (SWD) interface, compliant with ARM CoreSight standards. It includes a Micro Trace Buffer (MTB) for instruction trace capture during low-power operation. Debug access remains functional across all power modes except VLLS0, enabling breakpoint setting, register inspection, and real-time variable monitoring without disrupting system sleep behavior.

How many general-purpose I/O pins does the MKL04Z32VLC4 provide, and are they 5 V tolerant?

The MKL04Z32VLC4 provides 28 general-purpose I/O pins (GPIO) in its 32-pin LQFP package. These pins are not 5 V tolerant - absolute maximum input voltage is VDD + 0.3 V, with VDD limited to 3.6 V. Input thresholds scale with VDD (VIH = 0.7 × VDD, VIL = 0.3 × VDD), and internal pull-ups (20–50 kΩ) are available on most pins. Level-shifting is required for interfacing with 5 V logic systems.

What low-power modes are available on the MKL04Z32VLC4, and what is the lowest current consumption?

The MKL04Z32VLC4 supports nine distinct low-power modes, ranging from Wait and Stop to Very-Low-Leakage Stop (VLLS0–VLLS3). The lowest current consumption is achieved in VLLS0 mode: 0.30–0.54 µA at 3.0 V and 25°C (depending on PORPO bit setting), with full register and RAM retention and 4 µs wakeup time. This mode is ideal for applications requiring infrequent wake events with minimal energy overhead.

Is there an integrated analog-to-digital converter in the MKL04Z32VLC4, and what are its key specifications?

Yes, the MKL04Z32VLC4 includes a 12-bit successive approximation register (SAR) ADC with up to 16 input channels. It supports single-ended and differential acquisition, hardware averaging (up to 32 samples), and conversion rates up to 1.2 MSPS. The ADC operates across all low-power modes except VLLS0, with dedicated VDDA/VSSA rails for noise isolation. Its integral nonlinearity is ±1 LSB, and it accepts input voltages from 0 V to VDDA.