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NXP USA Inc. MKL03Z16VFK4R — Microcontrollers & Processors (MCU / MPU / DSP)

NXP MKL03Z16VFK4R Kinetis KL03 MCU, 48MHz Cortex-M0+

MPNMKL03Z16VFK4R
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NXP Kinetis KL03 ARM Cortex-M0+ MCU, 32-bit single-core, 48 MHz, 16 KB Flash, 2 KB RAM, 22 GPIO, 7x12-bit ADC, I²C/SPI/UART, 1.71–3.6 V supply, -40 to 105 °C, 24-QFN exposed pad.

$2.7300Ref. price · indicative, final on quote
NXP USA Inc. MKL03Z16VFK4R datasheet (PDF)
Packaging24-VFQFN Exposed Pad
RoHSROHS3 Compliant
SeriesKinetis KL03
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

MKL03Z16VFK4R specifications
ParameterValue
SeriesKinetis KL03
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.71V ~ 3.6V
Operating temperature-40°C ~ 105°C (TA)
Speed48MHz
PackageTape & Reel (TR) Cut Tape (CT)
RAM size2K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, LVD, POR, PWM, WDT
ConnectivityI²C, SPI, UART/USART
Number of i (O)22
Core processorARM® Cortex®-M0+
Case24-VFQFN Exposed Pad
Data convertersA/D 7x12b
Program memory size16KB (16K x 8)

Product details

48 MHz Cortex-M0+ in a 24-QFN — what this MCU delivers

The NXP MKL03Z16VFK4R is a 32-bit ARM Cortex-M0+ MCU from the Kinetis KL03 series, clocked at 48 MHz with 16 KB Flash and 2 KB RAM. It carries 22 GPIO, a 7-channel 12-bit ADC, and serial interfaces (I²C, SPI, UART/USART) in a 24-QFN package measuring 4x4 mm. The supply range spans 1.71 V to 3.6 V, and the operating temperature covers -40 to 105 °C — industrial grade, suited for outdoor telecom cabinets, motor-drive control boards, and engine-bay sensor nodes.

16 KB Flash and 2 KB RAM target sensor-fusion firmware, bootloaders, or simple protocol stacks. The Flash holds a modest application; the RAM holds a couple of buffers and a small state machine.

Industrial temperature range — deployment context

Rated -40 to 105 °C, the MKL03Z16VFK4R suits outdoor telecom power supplies, factory-automation I/O modules, and under-hood automotive auxiliary controllers. The 105 °C ceiling covers self-heating inside a sealed enclosure.

Frequently asked questions

What is MKL03Z16VFK4R's listed speed?

The core runs at 48 MHz, which sets the maximum SPI clock divider and UART baud rate for the serial interfaces.

What compliance documentation does NXP provide for MKL03Z16VFK4R?

The part is ROHS3 compliant, meeting the material-restriction requirements for EU-market equipment. NXP provides a RoHS certificate and material declaration upon request.