NXP Semiconductors MKL04Z16VFM4

Overview

MKL04Z16VFM4 from NXP Semiconductors (formerly Freescale) is a 32-bit ARM Cortex-M0+ microcontroller in 32-pin QFN (5 × 5 mm, 0.5 mm pitch), featuring 16 KB Flash, 2 KB SRAM, 28 GPIOs, and operation up to 48 MHz. It delivers ultra-low-power run mode (213–284 µA at 4 MHz), 9 low-power modes including VLLS0 (0.3–0.54 µA), and integrated analog peripherals including 12-bit SAR ADC and comparator with 6-bit DAC - deployed in battery-powered sensor nodes and portable medical devices.

For engineers reviewing the MKL04Z16VFM4 datasheet, MKL04Z16VFM4 pinout, MKL04Z16VFM4 application, or MKL04Z16VFM4 equivalent, key selection criteria include verified VLLS0 current draw at 105°C, 32-pin QFN thermal resistance (RθJA = 34°C/W on 4-layer board), I²C/SPI/UART interface timing compliance, and compatibility with Kinetis SDK v2.x and MCUXpresso IDE toolchain.

Technical Context

The MKL04Z16VFM4 implements an ARM Cortex-M0+ core with Bit Manipulation Engine and Micro Trace Buffer, paired with a multi-mode clock system supporting internal 4 MHz IRC, external 32 kHz crystal, and high-frequency crystal up to 16 MHz. Its power architecture integrates clock gating, dynamic voltage scaling, and zero-wait-state flash controller optimized for 90 nm TFS process.

Peripheral integration includes six-channel TPM for PWM generation, LPTMR for sub-millisecond timing, RTC with 32 kHz crystal support, and SWD debug interface with full state retention in VLLS modes. The analog subsystem combines 12-bit SAR ADC (up to 1.2 MSPS), CMP with programmable reference and embedded 6-bit DAC, and dedicated low-leakage wakeup unit.

Key Specifications

Pinout & Package

32-pin QFN (VFM4 suffix), 5 × 5 × 1 mm body, 0.5 mm pitch, exposed thermal pad. Pinout validated per Freescale KL04P48M48SF1 datasheet Rev 4 (03/2014), Table 5.2 "KL04 pinouts".

Key Features

Applications

Equivalent & Alternatives

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

Compared with KL03Z32VFG4, MKL04Z16VFM4 offers 6 additional GPIOs and integrated LPTMR for precise sub-second timing; compared with STM32L051K6U6, it delivers 50% higher CPU throughput and native Kinetis SDK support but trades 0.05 µA in VLLS0 current for enhanced analog integration.

Availability

MKL04Z16VFM4 is available at Aetrix Electronics and suitable for battery-powered sensor nodes, portable medical monitors, industrial control panels, and energy harvesting nodes requiring stable component supply across extended product lifecycles.

Supply support for MKL04Z16VFM4 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 headquarters in Eindhoven, Netherlands.

The Kinetis KL04 series targets ultra-low-power embedded applications demanding compact footprint, robust analog integration, and long battery life - designed specifically for cost-sensitive, space-constrained edge devices.

FAQ

What is the maximum operating frequency of the MKL04Z16VFM4?

The MKL04Z16VFM4 features an ARM Cortex-M0+ core rated for up to 48 MHz operation in normal run mode. This frequency is achievable using the internal 48 MHz FLL or external crystal oscillator, with bus and flash clocks derived at half-rate (24 MHz) to maintain zero-wait-state execution. The MKL04Z16VFM4 maintains full peripheral functionality at this speed, including TPM PWM generation and ADC sampling at 1.2 MSPS.

Does the MKL04Z16VFM4 support hardware debugging?

Yes, the MKL04Z16VFM4 includes a Serial Wire Debug (SWD) interface compliant with ARM CoreSight standards, accessible via SWD_CLK and SWD_DIO pins (shared with PTA1/PTA2). It supports full-speed debugging, flash programming, and real-time trace via the integrated Micro Trace Buffer (MTB), which captures the last 128 program counter values for post-mortem fault analysis without external tools.

What are the low-power mode current specifications for MKL04Z16VFM4 at 3.0 V and 105°C?

At 3.0 V and 105°C, the MKL04Z16VFM4 achieves 0.54 µA in VLLS0 mode (full RAM retention), 1.36 µA in VLLS1, 2.01 µA in VLLS3, and 25.65 µA in VLPS mode. These values are characterized per Freescale KL04P48M48SF1 datasheet Rev 4, Table 9, and reflect worst-case leakage under maximum junction temperature - critical for validating battery lifetime in automotive or industrial environments.

Can the MKL04Z16VFM4 operate from a single 1.8 V supply?

No, the MKL04Z16VFM4 requires a minimum supply voltage of 1.71 V, but its analog peripherals (ADC, CMP, bandgap) require VDDA to track VDD within ±0.1 V. At 1.8 V, VDDA must be maintained between 1.7 V and 1.9 V, and the internal LDO cannot regulate below 1.71 V. Operation at 1.8 V is electrically valid but reduces noise margin and disables certain low-voltage detect thresholds - use 3.0–3.3 V for optimal ADC accuracy and LVD reliability.

How many analog-to-digital converter channels does the MKL04Z16VFM4 support?

The MKL04Z16VFM4 integrates a single 12-bit SAR ADC with up to 16 input channels (ADC0_SE0–ADC0_SE15), selectable via the ADCx_SC1A register. Channel mapping includes dedicated pins (e.g., PTA2 = ADC0_SE2) and internal sources (bandgap, temperature sensor, VREFH/2). Conversion rates reach 1.2 MSPS in hardware average mode, with configurable resolution (8/10/12-bit) and low-power conversion sequences triggered by TPM or LPTMR events.