NXP Semiconductors MKL04Z16VLF4

Overview

MKL04Z16VLF4 from NXP Semiconductors (formerly Freescale) is a 32-bit ARM Cortex-M0+ microcontroller in 48-pin LQFP package, delivering 48 MHz operation with 16 KB Flash, 2 KB SRAM, and up to 41 GPIOs. It features ultra-low-power run mode (213–284 μA at 3.0 V), 9 low-power modes, and integrated analog peripherals including 12-bit SAR ADC and analog comparator with 6-bit DAC - deployed in battery-powered sensor nodes and industrial control interfaces.

For engineers reviewing the MKL04Z16VLF4 datasheet, MKL04Z16VLF4 pinout, MKL04Z16VLF4 application, or MKL04Z16VLF4 equivalent, key selection criteria include its 48-pin LQFP (7×7 mm, 0.5 mm pitch) footprint, 1.71–3.6 V supply range, -40°C to +105°C operating temperature, and support for SPI/I²C/UART communication alongside real-time clock and TPM/PWM timers.

Technical Context

The MKL04Z16VLF4 implements an ARM Cortex-M0+ core with Bit Manipulation Engine and Micro Trace Buffer for debug visibility. Its clock system integrates MCG with multiple sources: internal 4 MHz/32 kHz IRC, external 32 kHz–32 MHz crystals, and LPO - enabling flexible low-power clock gating across nine power modes including VLLS0 (0.30–0.54 μA typical).

Analog subsystem includes a 12-bit SAR ADC with configurable sample rate and resolution, plus a comparator with programmable reference and integrated 6-bit DAC for threshold generation. System-level features include COP watchdog, 4-channel DMA, SWD debug interface, and low-leakage wakeup unit supporting fast 4 μs wake-from-VLLS.

Key Specifications

Pinout & Package

Package: 48-pin LQFP (7 mm × 7 mm, 1.4 mm height, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MKL04Z16VLC4 and MKL04Z16VFM4, the MKL04Z16VLF4 provides the highest I/O count (41 pins) in a standard LQFP package, making it optimal for applications needing maximum signal routing flexibility and legacy-compatible assembly processes.

Availability

MKL04Z16VLF4 is available at Aetrix Electronics and suitable for industrial control interfaces, smart sensor nodes, wearable health monitors, and energy metering subsystems requiring stable component supply across extended product lifecycles.

Supply support for MKL04Z16VLF4 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 specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with roots in Freescale's microcontroller heritage.

The Kinetis KL04 family - including MKL04Z16VLF4 - was designed for ultra-low-power embedded applications demanding rich analog integration, small footprint, and robust industrial qualification.

FAQ

What is the maximum operating frequency of the MKL04Z16VLF4?

The MKL04Z16VLF4 supports a maximum core/system clock frequency of 48 MHz in normal run mode. This is achieved using the MCG in FBE (FLL Bypassed External) mode with an external crystal or the internal 48 MHz IRC. In very-low-power run (VLPR) mode, the maximum core frequency is limited to 4 MHz to maintain sub-300 μA current draw.

Does the MKL04Z16VLF4 include hardware debug support?

Yes, the MKL04Z16VLF4 includes full Serial Wire Debug (SWD) support via dedicated SWD_CLK and SWD_DIO pins. It also integrates a 512-byte Micro Trace Buffer (MTB) for non-intrusive program flow tracing, enabling efficient development without requiring full JTAG infrastructure or impacting real-time behavior.

What analog peripherals are integrated into the MKL04Z16VLF4?

The MKL04Z16VLF4 integrates a 12-bit SAR ADC with up to 16 channels, an analog comparator (CMP) with programmable reference input, and an integrated 6-bit DAC used as the comparator's internal reference source. These peripherals operate across the full 1.71–3.6 V supply range and support low-power modes including VLLS1 with full state retention.

What is the GPIO count and pin compatibility of the MKL04Z16VLF4?

The MKL04Z16VLF4 provides 41 general-purpose I/O pins in its 48-pin LQFP package. While functionally compatible with other KL04 variants, it is not pin-compatible with MKL04Z16VLC4 (32-pin LQFP) or MKL04Z16VFM4 (32-pin QFN) due to differing pin counts and physical layouts. Signal mapping must be verified against the KL04 pin multiplexing table.

How does the MKL04Z16VLF4 achieve ultra-low power consumption?

The MKL04Z16VLF4 achieves ultra-low power through nine configurable low-power modes, clock gating at module level, 90 nm TFS process technology, zero-wait-state flash, and optimized power domains. Its VLLS0 mode draws just 0.30–0.54 μA (typ.) with full RAM retention and 4 μs wake time - enabled by dedicated low-leakage wakeup unit and selective peripheral clock disabling.