NXP Semiconductors MKL17Z128VFT4

Overview

MKL17Z128VFT4 from NXP Semiconductors is a 48 MHz ARM® Cortex®-M0+ microcontroller with 128 KB flash, 32 KB SRAM, and 16 KB ROM bootloader, designed for ultra-low-power battery-operated sensor nodes and wearable medical devices requiring precise timing, analog sensing, and flexible serial connectivity.

For engineers reviewing the MKL17Z128VFT4 datasheet, MKL17Z128VFT4 pinout, MKL17Z128VFT4 application, or MKL17Z128VFT4 equivalent, this page delivers verified specifications, validated package mapping (48-pin QFN, 7×7 mm, 0.5 mm pitch), confirmed low-power modes (1.96 µA VLLS3), FlexIO peripheral capability, and real-world application context for rapid design-in decisions.

Technical Context

The MKL17Z128VFT4 implements an ARM Cortex-M0+ core with Micro Trace Buffer and Bit Manipulation Engine, paired with a multi-mode clock system featuring factory-trimmed 48 MHz HIRC (±0.5%), 8/2 MHz LIRC, and 32 kHz crystal support active in all low-power states. Its memory subsystem integrates 128 KB flash with error correction, 32 KB SRAM, and 16 KB ROM containing a configurable boot loader.

Peripheral architecture includes dual low-power UARTs, two I²C modules (1 Mbit/s), two SPIs (24 Mbit/s), one 16-bit 818 ksps ADC with internal Vref, one 12-bit DAC, high-speed analog comparator with integrated 6-bit DAC reference, and FlexIO for runtime emulation of UART/IrDA/SPI/I²C/PWM/I²S - enabling hardware-level protocol flexibility without FPGA or external logic.

Key Specifications

Pinout & Package

Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch, 0.65 mm height), 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 MKL27Z128VLH4 and STM32L072KBU6, the MKL17Z128VFT4 uniquely balances 48 MHz performance, 40 GPIOs with 6 high-drive pads, FlexIO-based protocol agility, and 1.96 µA VLLS3 - making it the most cost-effective choice for compact, battery-powered sensor hubs requiring hardware-level serial flexibility without USB overhead.

Availability

MKL17Z128VFT4 is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, industrial sensor nodes, and medical infusion pump controllers requiring stable component supply and long-term lifecycle support.

Supply support for MKL17Z128VFT4 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in ARM-based microcontrollers and edge AI acceleration.

The Kinetis KL17 series targets cost-sensitive, battery-powered general-purpose connectivity applications - delivering ultra-low-power operation, flexible peripheral emulation via FlexIO, and robust security features for next-generation embedded endpoints.

FAQ

What is the maximum operating frequency and core type of the MKL17Z128VFT4?

The MKL17Z128VFT4 features an ARM Cortex-M0+ core rated for up to 48 MHz operation. This frequency is supported by its high-accuracy internal 48 MHz HIRC oscillator (±0.5% tolerance), eliminating the need for an external crystal in many applications. The MKL17Z128VFT4 achieves deterministic real-time performance with sub-10 ns interrupt latency and efficient Thumb-2 code execution, making it suitable for time-critical sensor fusion and control tasks.

Does the MKL17Z128VFT4 support ultra-low-power operation, and what is its lowest active current draw?

Yes, the MKL17Z128VFT4 supports six flexible low-power modes, with VLLS3 (Very-Low-Leakage Stop Mode 3) drawing just 1.96 µA at 3.0 V while retaining RAM and RTC functionality. This specification is measured at 25 °C and applies to the 48-pin QFN package. The MKL17Z128VFT4 also achieves 54 µA/MHz in very-low-power run mode, enabling multi-year battery life in compact, intermittently active sensor nodes.

What analog peripherals are integrated into the MKL17Z128VFT4, and how are they used in sensor applications?

The MKL17Z128VFT4 integrates a 16-channel, 16-bit, 818 ksps ADC with internal 1.2 V voltage reference, a 12-bit DAC, and a high-speed analog comparator with a programmable 6-bit DAC reference input. In sensor applications, the MKL17Z128VFT4 uses these peripherals for precision thermistor/strain gauge measurement, closed-loop pressure control, and self-calibrating analog front-ends - all while maintaining low power consumption through selective peripheral clock gating.

How does the FlexIO module in the MKL17Z128VFT4 enhance design flexibility compared to fixed-function peripherals?

The FlexIO module in the MKL17Z128VFT4 is a programmable logic block that can emulate UART, SPI, I²C, IrDA, PWM, I²S, and custom serial protocols in software-defined fashion. Unlike fixed-function peripherals, FlexIO allows runtime reconfiguration - enabling the MKL17Z128VFT4 to adapt to legacy sensor interfaces or proprietary communication schemes without hardware changes, reducing BOM count and PCB layer count in resource-constrained designs.

What debug and programming interface does the MKL17Z128VFT4 use, and is external hardware required?

The MKL17Z128VFT4 uses a two-pin Serial Wire Debug (SWD) interface (SWD_DIO and SWD_CLK) for programming, debugging, and real-time trace via its integrated Micro Trace Buffer. No external JTAG adapter is required - standard CMSIS-DAP or SEGGER J-Link probes support full flash programming, breakpoint debugging, and live variable inspection. The MKL17Z128VFT4 also includes a ROM-based bootloader accessible via UART/I²C/SPI, enabling field firmware updates without dedicated debug hardware.