MKL03Z32VFK4
Overview
The MKL03Z32VFK4 is an ultra-low-power 32-bit microcontroller from NXP's Kinetis KL03 family, based on the ARM Cortex-M0+ core. Operating at up to 48MHz, it integrates 32KB of Flash and 2KB of SRAM in a compact 4x4mm 24-QFN package. It is specifically designed for space-constrained applications that require high energy efficiency and a wide operating voltage range from 1.71V to 3.6V.
Why Choose This Part
The Kinetis KL03 stands out for its high energy efficiency, consuming only 5.49mA at 48MHz during flash compute operations. It includes specialized hardware features like the Bit Manipulation Engine (BME) for efficient peripheral bit-level access and a Micro Trace Buffer (MTB) for simplified debugging. Its wide array of low-power modes, including VLLS variants, allows developers to optimize the power profile for specific sleep and active cycles.
Applications
Key Specifications
Getting Started
Developers can evaluate this MCU using the FRDM-KL03Z Freedom Development Board. Software development is supported by MCUXpresso IDE and SDK, which provide peripheral drivers and power management examples. Debugging is handled via the integrated SWD interface and the Micro Trace Buffer for real-time instruction tracing.



