NXP Semiconductors MKL05Z8VLC4

Overview

MKL05Z8VLC4 from NXP Semiconductors (formerly Freescale) is a 32-bit ARM Cortex-M0+ microcontroller in 32-pin LQFP package, delivering 48 MHz operation with 8 KB Flash and 1 KB SRAM. It features ultra-low-power run mode (213–284 µA at 4 MHz), 28 GPIOs, integrated 12-bit ADC/DAC, TSI touch interface, and nine low-power modes - optimized for battery-powered sensor nodes and portable medical devices.

For engineers reviewing the MKL05Z8VLC4 datasheet, MKL05Z8VLC4 pinout, MKL05Z8VLC4 application, or MKL05Z8VLC4 equivalent, this page delivers verified electrical specs, validated LQFP-32 pin mapping, real-world low-power use cases, and two confirmed alternative parts with documented functional and packaging differences.

Technical Context

The MKL05Z8VLC4 implements an ARM Cortex-M0+ core with Bit Manipulation Engine and Micro Trace Buffer, supporting debug via SWD. Its clock system includes factory-trimmed 4 MHz and 32 kHz internal RC oscillators, plus external crystal support (32 kHz–32 MHz), with MCG configurable in FEI/FBI/BLPI/BLPE modes for dynamic power-performance tradeoffs.

Peripherals include one I²C, one low-power UART, one SPI, six-channel TPM, 16-bit LPTMR, RTC, COP watchdog, and a low-leakage wakeup unit. Analog subsystem integrates 12-bit SAR ADC (up to 16 channels), 12-bit DAC, and analog comparator with embedded 6-bit DAC reference - all operable in VLPR/VLPS modes with sub-µA adder currents.

Key Specifications

Pinout & Package

Package: 32-pin LQFP (7 mm × 7 mm, 0.8 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 MKL05Z8VLC4, MKL05Z8VFK4 offers identical functionality in a smaller QFN package with reduced I/O count, while MKL25Z128VLH4 provides substantial memory and peripheral expansion at the cost of higher power and larger footprint - making MKL05Z8VLC4 optimal for cost- and size-sensitive, battery-constrained designs requiring exactly 28 GPIOs and LQFP manufacturability.

Availability

MKL05Z8VLC4 is available at Aetrix Electronics and suitable for wearable health monitors, smart building sensor nodes, industrial asset trackers, and portable medical diagnostic tools requiring stable component supply across long-lifecycle deployments.

Supply support for MKL05Z8VLC4 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 MCU portfolio.

The Kinetis KL05 family - including MKL05Z8VLC4 - was designed specifically for ultra-low-power, cost-sensitive embedded applications demanding high integration, small footprint, and robust industrial temperature operation.

FAQ

What is the maximum operating frequency of the MKL05Z8VLC4, and under what conditions is it guaranteed?

The MKL05Z8VLC4 achieves a maximum core/system clock frequency of 48 MHz, guaranteed across its full operating voltage range (1.71–3.6 V) and temperature range (–40°C to +105°C). This is achieved using the MCG in FBE mode with an external 4–32 MHz crystal oscillator. The 48 MHz specification includes zero wait-state Flash execution and meets all AC timing requirements per the Rev 4 datasheet.

Does the MKL05Z8VLC4 support hardware touch sensing, and how many channels are available?

Yes, the MKL05Z8VLC4 integrates a dedicated Touch Sensing Input (TSI) module supporting up to 12 capacitive touch channels. These map to PTB0–PTB11 pins and operate independently in low-power modes (including VLPR and VLLS1), enabling wake-on-touch functionality with typical current adders of 22 µA. The TSI module includes built-in charge/discharge circuitry and noise filtering - eliminating need for external touch controllers.

What are the lowest power consumption modes supported by the MKL05Z8VLC4, and what is the typical current draw in each?

The MKL05Z8VLC4 supports nine low-power modes. The deepest is VLLS0, drawing 0.3–0.54 µA at 3.0 V and 25°C with PORPO=1, retaining full RAM and register state. VLLS1 draws 0.64–1.50 µA, and VLPS draws 2.25–8.27 µA depending on temperature. All values are measured with 3.0 V supply and specified in Table 9 of the Rev 4 datasheet - confirming suitability for decade-long battery operation in intermittent-sensing applications.

Can the MKL05Z8VLC4 operate from a single 3.0 V lithium coin cell, and what is the minimum supply voltage?

Yes, the MKL05Z8VLC4 operates reliably from a single 3.0 V CR2032 coin cell. Its specified minimum supply voltage is 1.71 V across the full –40°C to +105°C temperature range, with brown-out reset (BOR) thresholds configurable down to 1.54 V (low range) or 2.48 V (high range). The device retains RAM content down to 1.2 V (VRAM spec), enabling graceful shutdown or data preservation during battery depletion.

What debug interface does the MKL05Z8VLC4 provide, and is JTAG supported?

The MKL05Z8VLC4 provides Serial Wire Debug (SWD) via dedicated SWD_DIO and SWD_CLK pins - a 2-pin ARM-standard interface supporting full programming, real-time debugging, and Micro Trace Buffer (MTB) trace capture. JTAG is not supported; SWD is the sole debug interface. The MTB enables non-intrusive instruction trace with 1 KB of on-chip buffer, critical for optimizing low-power ISR latency and verifying power mode transitions in MKL05Z8VLC4 firmware.