NXP Semiconductors MKL16Z256VLH4

Overview

MKL16Z256VLH4 from NXP Semiconductors (formerly Freescale) is a 48 MHz ARM Cortex-M0+ based microcontroller in the Kinetis KL16 sub-family, featuring 256 KB flash, 32 KB SRAM, and up to 54 GPIOs. It delivers ultra-low-power operation down to 0.23 µA in VLLS0 mode with full state retention and 4.5 µs wakeup, targeting battery-powered industrial sensors and portable medical devices.

For engineers reviewing the MKL16Z256VLH4 datasheet, MKL16Z256VLH4 pinout, MKL16Z256VLH4 application, or MKL16Z256VLH4 equivalent, key selection criteria include its 4-channel DMA, dual UART + I²C + SPI interfaces, 16-bit SAR ADC, 12-bit DAC, and support for nine low-power modes across –40°C to 105°C ambient operation.

Technical Context

The MKL16Z256VLH4 integrates an ARM Cortex-M0+ core with Bit Manipulation Engine and Micro Trace Buffer for debug visibility. Its clock system includes configurable MCG with FEI/BLPI/PEE modes, supporting internal 4 MHz/32 kHz IRC and external crystals up to 16 MHz.

Power management leverages clock gating, dynamic voltage scaling, and dedicated low-leakage wakeup unit. Analog subsystem combines 16-bit SAR ADC (up to 1 MSPS), 12-bit DAC, and analog comparator with integrated 6-bit DAC reference - all operable in VLPR/VLPS modes with sub-µA peripheral adders.

Key Specifications

Pinout & Package

64-pin LQFP package (10 mm × 10 mm, 0.5 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 KL26Z128VLH4, MKL16Z256VLH4 offers double flash/RAM for complex firmware and data logging; versus STM32L072KBU6, it provides superior analog integration and larger I/O count in the same LQFP package, reducing external component count in sensor-rich designs.

Availability

MKL16Z256VLH4 is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical monitors, smart utility meters, and home automation controllers requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for MKL16Z256VLH4 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 applications, with roots in Freescale's embedded processing heritage.

The MKL16Z256VLH4 belongs to the Kinetis KL16 sub-family - designed specifically for ultra-low-power, cost-sensitive 32-bit MCU applications in battery-operated and energy-harvesting systems where analog integration and thermal robustness are critical.

FAQ

What is the maximum operating frequency of the MKL16Z256VLH4 core?

The MKL16Z256VLH4 features an ARM Cortex-M0+ core rated for up to 48 MHz operation in normal run mode. This frequency is achievable using the Phase-Locked Loop (PLL) with external crystal or internal reference clock sources. In very-low-power run (VLPR) mode, the core operates up to 4 MHz to minimize active current while maintaining real-time responsiveness. The MKL16Z256VLH4 datasheet specifies timing parameters for both configurations across the full –40°C to 105°C temperature range.

Does the MKL16Z256VLH4 support hardware touch sensing?

Yes, the MKL16Z256VLH4 integrates a dedicated Touch Sensing Interface (TSI) module capable of supporting up to 16 capacitive touch electrodes with programmable sensitivity and noise rejection. It operates with sub-1 µA active current in low-power polling mode and retains full functionality in VLPR and VLPS power modes. The TSI module is fully supported in the Kinetis SDK and requires no external components, making the MKL16Z256VLH4 ideal for battery-powered HMI applications.

What are the key low-power modes available on the MKL16Z256VLH4?

The MKL16Z256VLH4 implements nine distinct low-power modes, including VLLS0 (0.23 µA @ 3.0 V, 25°C), VLLS1 (0.71 µA), VLLS3 (1.5 µA), LLS (2.0 µA), VLPS (2.71 µA), and STOP (306 µA). Each mode offers precise trade-offs between wakeup latency (as low as 4.5 µs), retained memory/peripheral state, and clock domain control. These modes are managed by the System Mode Controller (SMC) and are fully documented in the KL16P64M48SF4 Reference Manual.

Can the MKL16Z256VLH4 operate across the full industrial temperature range?

Yes, the MKL16Z256VLH4 is qualified for operation from –40°C to +105°C ambient temperature, meeting industrial-grade reliability requirements. Its electrical specifications - including flash read/write endurance, ADC/DAC accuracy, and power consumption - are characterized across this full range. Thermal design must account for junction temperature limits (TJ ≤ 125°C), and PCB layout should follow NXP's recommended thermal pad and copper pour guidelines for the 64-pin LQFP package.

What debug interface does the MKL16Z256VLH4 provide?

The MKL16Z256VLH4 uses a 2-pin Serial Wire Debug (SWD) interface (SWD_CLK and SWD_DIO) compliant with ARM CoreSight standards. It supports full JTAG/SWD functionality including flash programming, real-time variable monitoring, and non-intrusive instruction trace via the integrated Micro Trace Buffer (MTB). No external debug probe is required beyond standard SWD-compatible tools such as LPC-Link2 or CMSIS-DAP adapters.