NXP Semiconductors MKL17Z32VFM4R

Overview

MKL17Z32VFM4R from NXP Semiconductors (formerly Freescale) is a 32 KB Flash, 8 KB SRAM ARM® Cortex®-M0+ microcontroller in 32-pin QFN package, operating up to 48 MHz with 28 GPIOs, 11 ADC channels, and hardware CRC. It delivers 46 µA/MHz in very low power run mode and 1.68 µA in stop mode (RAM + RTC retained), targeting battery-powered sensor nodes and portable medical devices.

For engineers reviewing the MKL17Z32VFM4R datasheet, MKL17Z32VFM4R pinout, MKL17Z32VFM4R application, or MKL17Z32VFM4R equivalent, key selection criteria include its 32-pin QFN footprint, FlexIO peripheral for custom serial emulation, integrated ROM bootloader supporting UART/I2C/SPI, and verified operation across –40 to 105 °C at 1.71–3.6 V.

Technical Context

The MKL17Z32VFM4R implements an ARM Cortex-M0+ core with NVIC and SWD debug interface, paired with a MCG-Lite clock generator supporting HIRC48M, LIRC8M, and 32 kHz–32 MHz crystal oscillators. Its memory subsystem includes 32 KB flash (1 KB pages), 8 KB SRAM, and 16 KB ROM containing a factory-programmed bootloader.

Peripherals are organized via a crossbar switch enabling concurrent bus master access. Power management uses PMC to support six static modes including VLPR, VLPS, and VLLS3 - with wake-up sources including LLWU, AWIC, and RTC alarm - while FlexIO provides programmable serial interface emulation without dedicated hardware blocks.

Key Specifications

Pinout & Package

Package: 32-pin QFN (5 mm × 5 mm, 0.5 mm pitch, 0.65 mm thickness), 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 MKL27Z32VFM4 and STM32L053R8T6, the MKL17Z32VFM4R offers unique value in zero-cost protocol flexibility via FlexIO and field-upgradable firmware via ROM bootloader - critical for long-lifecycle, maintenance-sensitive embedded deployments where minimizing BOM and firmware validation overhead is essential.

Availability

MKL17Z32VFM4R is available at Aetrix Electronics and suitable for wearable health monitors, smart industrial sensor nodes, and portable medical diagnostic tools requiring stable component supply and long-term lifecycle assurance.

Supply support for MKL17Z32VFM4R 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 markets.

The Kinetis KL17 family was designed specifically for cost-sensitive, battery-powered applications demanding robust low-power operation, integrated security, and flexible peripheral configuration - especially where space-constrained packaging and field firmware updates are critical.

FAQ

What is the maximum operating frequency of the MKL17Z32VFM4R?

The MKL17Z32VFM4R features an ARM Cortex-M0+ core with a maximum system clock frequency of 48 MHz. This is achieved using the internal high-accuracy 48 MHz HIRC oscillator (±0.5% tolerance) or an external crystal up to 32 MHz with PLL multiplication. The MKL17Z32VFM4R maintains full peripheral functionality at this speed, including SPI1 at 24 Mbit/s and UART at 1.5 Mbit/s, making it suitable for real-time sensor processing and wireless coexistence stacks.

Does the MKL17Z32VFM4R support in-system programming without external debug hardware?

Yes, the MKL17Z32VFM4R includes a 16 KB ROM bootloader that supports in-system programming via UART, I²C, or SPI interfaces - no JTAG or SWD debugger required. This enables field firmware updates through existing communication channels, such as a Bluetooth LE connection routed to UART or a wired I²C interface. The MKL17Z32VFM4R bootloader validates firmware images using CRC before flashing, ensuring reliability during remote updates.

How many ADC channels does the MKL17Z32VFM4R support, and what is their resolution?

The MKL17Z32VFM4R integrates a single 16-bit successive approximation register (SAR) ADC module with up to 11 input channels in its 32-pin QFN package. It achieves up to 818 ksps sampling rate at ≤13-bit effective resolution and includes a high-accuracy internal voltage reference. Channel mapping is fixed per pin assignment (e.g., ADC0_SE4a on PTA4), and the MKL17Z32VFM4R supports hardware-triggered conversions synchronized to TPM or LPTMR events for deterministic timing in sensor acquisition.

What low-power modes are available on the MKL17Z32VFM4R, and what is the lowest current draw?

The MKL17Z32VFM4R supports six low-power modes: VLPR, VLPW, Stop, VLPS, LLS, and VLLS3. Its lowest active current draw is 46 µA/MHz in very low power run mode; the deepest static mode is Stop, consuming just 1.68 µA while retaining SRAM and RTC contents. In VLLS3 mode, it draws ~1.9 µA with SRAM and 32-byte register file retained - ideal for infrequent wake-on-interrupt applications like smoke detectors or asset trackers.

Is the MKL17Z32VFM4R pin-compatible with other Kinetis KL17 variants?

No, the MKL17Z32VFM4R is not pin-compatible with other KL17 packages due to differing pin counts and functions. Its 32-pin QFN (FM) footprint differs from 36-pin XFBGA (DA), 48-pin QFN (FT), 64-pin LQFP (LH), and 64-pin MAPBGA (MP) variants. While peripheral registers and memory maps are consistent across the KL17 family, PCB layout must be specific to the MKL17Z32VFM4R's 32-pin QFN mechanical dimensions (5 mm × 5 mm, 0.5 mm pitch) and I/O allocation.