NXP Semiconductors MKL04Z8VFM4

Overview

MKL04Z8VFM4 from NXP Semiconductors (formerly Freescale) is an ARM Cortex-M0+ based 32-bit microcontroller optimized for ultra-low-power embedded applications. It operates at up to 48 MHz, integrates 8 KB flash and 1 KB SRAM, supports 28 GPIOs, and delivers 45 μA/MHz run-mode efficiency with 2 μA static current in full state retention - enabling battery-powered sensor nodes and portable medical devices.

For engineers reviewing the MKL04Z8VFM4 datasheet, MKL04Z8VFM4 pinout, MKL04Z8VFM4 application, or MKL04Z8VFM4 equivalent, key selection criteria include its 32-pin QFN package, -40°C to +105°C industrial temperature range, integrated 12-bit SAR ADC and analog comparator with 6-bit DAC, low-power UART/I²C/SPI interfaces, and support for nine power modes including VLLS0 (0.3 μA typical).

Technical Context

The MKL04Z8VFM4 implements a single-core ARM Cortex-M0+ processor with Bit Manipulation Engine and Micro Trace Buffer, executing from zero-wait-state flash memory. Its clock system includes configurable MCG with internal 4 MHz/32 kHz IRC and external crystal support (32 kHz–32 MHz), enabling precise timing control across power modes.

System-level integration includes a 4-channel DMA controller, COP watchdog, low-leakage wakeup unit, and SWD debug interface. Analog subsystem comprises a 12-bit SAR ADC with programmable reference, and a comparator with integrated 6-bit DAC - all operable in VLPR and VLLS modes without waking the core.

Key Specifications

Pinout & Package

Package: 32-pin QFN (VFM), 5 mm × 5 mm × 1 mm, 0.5 mm pitch, exposed thermal pad - optimized for space-constrained PCB layouts and efficient heat dissipation in compact enclosures.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MKL04Z8VFM4, STM32L011K4T6 offers more flash and SRAM but lacks integrated analog comparator with DAC, increasing BOM cost for sensor wake-up functions; EFM32ZG108F8 achieves lower active current but requires external analog circuitry for comparator-based wake events - making MKL04Z8VFM4 optimal for cost-sensitive, analog-integrated edge nodes.

Availability

MKL04Z8VFM4 is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical devices, and industrial control panels requiring stable component supply, long-term lifecycle assurance, and industrial-grade temperature performance.

Supply support for MKL04Z8VFM4 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.

The Kinetis KL04 series was designed specifically for cost-sensitive, ultra-low-power embedded systems requiring integrated analog peripherals, robust debug capability, and scalable software compatibility within the broader Kinetis family.

FAQ

What is the maximum operating frequency of the MKL04Z8VFM4?

The MKL04Z8VFM4 features an ARM Cortex-M0+ core with a maximum system clock frequency of 48 MHz. This speed is achievable using the internal 48 MHz FLL or external crystal oscillator, and is supported across all power modes except VLPR and VLPS, where the core is limited to 4 MHz for ultra-low-power operation. The MKL04Z8VFM4 maintains full peripheral functionality at 48 MHz in Run mode.

Does the MKL04Z8VFM4 include an integrated analog comparator with DAC?

Yes, the MKL04Z8VFM4 integrates an analog comparator (CMP) module with a built-in 6-bit DAC used as a programmable reference voltage source. This allows precise threshold detection without external components - for example, enabling wake-from-VLLS0 on analog input crossing a DAC-set level. The MKL04Z8VFM4 datasheet confirms this feature is fully functional in low-power modes including VLLS1 and VLPR.

What package type and dimensions does the MKL04Z8VFM4 use?

The MKL04Z8VFM4 uses a 32-pin QFN (Quad Flat No-lead) package designated "VFM", measuring 5 mm × 5 mm × 1 mm with 0.5 mm pitch and an exposed thermal pad. This package is distinct from the 24-pin FK, 32-pin LC, and 48-pin LF variants in the KL04 family. The MKL04Z8VFM4's VFM footprint is documented in NXP package drawing SOT629-2.

How many GPIO pins does the MKL04Z8VFM4 support?

The MKL04Z8VFM4 supports 28 general-purpose input/output pins, as confirmed in the Freescale ordering information table and pin multiplexing documentation. These GPIOs are distributed across PORTA and PORTB, with multiple pins supporting alternate functions including UART, I²C, SPI, TPM, ADC, and LPTMR. All 28 pins are accessible in the 32-pin VFM package.

What is the minimum supply voltage for the MKL04Z8VFM4 during flash programming?

The MKL04Z8VFM4 requires a minimum supply voltage of 1.71 V for flash write and erase operations, matching its operational voltage range. This is specified in both the "Operating Characteristics" section and Table 5 ("Voltage and current operating requirements") of the official datasheet. Flash programming at voltages below 1.71 V is not guaranteed and may result in corruption - the MKL04Z8VFM4's internal charge pump ensures reliable programming across the full 1.71–3.6 V range.