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NXP Semiconductors MKL03Z32VFK4
- Part No.:
- MKL03Z32VFK4
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
MKL03Z32VFK4.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,720
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Product details
Overview
MKL03Z32VFK4 from NXP Semiconductors is an ARM Cortex-M0+ microcontroller with 32 KB flash, 2 KB SRAM, and 8 KB ROM bootloader, operating at up to 48 MHz in a 24-pin QFN (4 × 4 mm, 0.5 mm pitch) package. It delivers ultra-low-power operation - as low as 77 nA in deep-sleep mode - and integrates a 12-bit SAR ADC (818 ksps), LPUART, I²C (1 Mbit/s), SPI, RTC, and analog comparator with 6-bit DAC, targeting compact IoT edge nodes.
For engineers reviewing the MKL03Z32VFK4 datasheet, MKL03Z32VFK4 pinout, MKL03Z32VFK4 application, or MKL03Z32VFK4 equivalent, key selection criteria include its 22 GPIO count, -40 to 105°C industrial temperature range (QFN), 1.71–3.6 V supply, and support for nine low-power modes including VLLS0 (77 nA) and VLPS (2.2 µA).
Technical Context
The MKL03Z32VFK4 implements an ARM Cortex-M0+ core with Micro Trace Buffer and Bit Manipulation Engine, paired with a configurable MCG-Lite clock system supporting HIRC (48 MHz), LIRC (2/8 MHz), and crystal oscillator (32–40 kHz). Its memory subsystem includes 32 KB flash with error correction, 2 KB SRAM, and 8 KB ROM containing a factory-programmed bootloader.
Peripherals are optimized for ultra-low-power edge sensing: the 12-bit ADC supports up to 7 channels with internal 1.2 V reference and 818 ksps sampling; the analog comparator includes a programmable reference input and integrated 6-bit DAC; and the LPUART enables wake-from-stop communication with <7.5 µs wakeup latency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM Cortex-M0+, up to 48 MHz - enables real-time control with minimal power overhead in battery-constrained devices. |
| Flash / RAM | 32 KB flash / 2 KB SRAM - sufficient for compact firmware with sensor fusion and BLE stack coexistence. |
| Supply Voltage | 1.71–3.6 V - compatible with single-cell Li-ion, LiPo, and coin-cell (with boost) power sources. |
| Low-Power Modes | Nine modes including VLLS0 (77 nA) and VLPS (2.2 µA) - extends multi-year battery life in always-on sensor endpoints. |
| ADC Performance | 12-bit SAR, 818 ksps, 7-channel - supports high-fidelity analog signal acquisition without external oversampling. |
| Package | 24-pin QFN, 4 × 4 × 0.65 mm, 0.5 mm pitch - provides robust thermal/mechanical performance and manufacturability in space-limited PCBs. |
| Temperature Range | -40 to +105°C - qualified for industrial and automotive under-hood ambient conditions. |
| I/O Count | 22 GPIO - enables direct interface to multiple sensors, LEDs, buttons, and simple actuators without external logic. |
Pinout & Package
24-pin QFN (VFK4) package: 4 mm × 4 mm body, 0.5 mm pitch, 0.65 mm height, wettable flank option available. RoHS-compliant, MSL3 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Digital supply | Primary 1.71–3.6 V power input; decoupling required within 10 mm of pin. |
| VSS | Digital ground | Reference return for digital I/O and core logic; must be connected to low-impedance ground plane. |
| VDDA/VSSA | Analog supply/ground | Isolated analog domain supply (1.71–3.6 V) with dedicated ground - critical for ADC/CMP accuracy. |
| PTA0/PTA1 | GPIO / SWD_CLK / SWD_DIO | Debug interface pins; default SWD functionality enables programming and real-time trace via MTB. |
| PTB0–PTB7 | GPIO / UART0_RX / UART0_TX / I2C0_SCL / I2C0_SDA / SPI0_SCK / SPI0_MOSI / SPI0_MISO | Multiplexed I/O supporting all major serial protocols - allows flexible peripheral assignment in layout. |
| ADC0_SE0–ADC0_SE6 | Analog inputs | Seven dedicated ADC channel inputs; share pins with GPIO but require analog input configuration. |
| RTC_CLKIN | Real-time clock input | Accepts 32.768 kHz crystal or external clock - enables precise timekeeping during deep-sleep modes. |
| RESET_b | Active-low reset | Asynchronous reset input; internal pull-down when configured as GPIO - ensures safe power-up sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low static power | 77 nA in VLLS0 mode with full RAM retention - enables decade-scale battery life in maintenance-free sensor nodes. |
| Integrated bootloader | 8 KB ROM with UART-based flash programming - eliminates need for external programmer in field firmware updates. |
| High-accuracy internal reference | 1.2 V bandgap reference (±1.5% over temp) - enables stable ADC conversions without external voltage reference IC. |
| Fast wakeup capability | 7.5 µs wakeup from VLPS to full-speed 48 MHz operation - supports responsive event-driven sensing without latency penalty. |
| Hardware security ID | 80-bit unique chip identifier - provides immutable device identity for secure boot and cloud authentication workflows. |
| Low-leakage wakeup unit | Dedicated hardware block monitoring GPIO, RTC, and LPUART - enables selective wake events while maintaining sub-µA sleep current. |
Applications
| Smart Wearable Sensor Node | Industrial Predictive Maintenance Module |
|---|---|
Use Scenario: Compact wearable patch monitoring heart rate, skin temperature, and motion using optical and thermal sensors. IC Role / Device Role / Timing Role: Central MCU managing sensor data acquisition, local preprocessing, and BLE-ready packet formatting. Use Value: 22 GPIO and integrated 12-bit ADC eliminate external signal conditioning; 77 nA VLLS0 extends battery life beyond 12 months on a CR2032 cell. | Use Scenario: Vibration and temperature monitor mounted on motor housings in factory automation systems. IC Role / Device Role / Timing Role: Edge intelligence node performing FFT-based anomaly detection before transmitting alerts via RS-485 or LoRaWAN gateway. Use Value: -40 to 105°C rating ensures reliability near hot machinery; LPUART enables wake-on-frame for low-duty-cycle wireless reporting. |
| Asset Tracking Beacon | Medical Disposable Diagnostic Device |
Use Scenario: GPS-denied indoor asset tracker logging location via BLE RSSI and environmental conditions. IC Role / Device Role / Timing Role: Low-power host controlling accelerometer, humidity sensor, and BLE SoC via UART or SPI. Use Value: 4 × 4 mm QFN fits inside slim enclosures; 2.2 µA VLPS mode with RTC alarm enables periodic wake-and-measure cycles every 30 seconds. | Use Scenario: Single-use glucose meter or rapid antigen test reader requiring FDA-compliant firmware and tamper-resistant operation. IC Role / Device Role / Timing Role: Secure measurement controller handling analog strip reading, calibration, and encrypted result transmission. Use Value: 80-bit unique ID enables per-device cryptographic binding; internal 1.2 V reference ensures ±1.5% ADC accuracy across shelf life and temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32L011K4T6 | ARM Cortex-M0+, 16 KB flash, 2 KB SRAM, 32-pin TSSOP; lower max frequency (32 MHz); no integrated VREF. | Lacks 12-bit ADC with internal reference and ROM bootloader; requires external reference for precision analog. | Choose when cost sensitivity outweighs need for integrated bootloader and high-accuracy ADC reference. |
| EFM32ZG222F32 | Silicon Labs Gecko ZG222, ARM Cortex-M0+, 32 KB flash, 4 KB RAM, 32-pin QFN; higher RAM; no ROM bootloader. | Higher RAM supports larger protocol stacks; lacks factory-programmed bootloader - requires external programming infrastructure. | Prefer when additional RAM is needed for complex connectivity stacks, and external programming is acceptable. |
Compared with STM32L011K4T6 and EFM32ZG222F32, the MKL03Z32VFK4 uniquely combines 32 KB flash, integrated 8 KB ROM bootloader, 1.2 V internal reference, and 77 nA VLLS0 - making it optimal for ultra-compact, field-upgradable, analog-intensive IoT endpoints where PCB area and firmware update autonomy are critical.
Availability
MKL03Z32VFK4 is available at Aetrix Electronics and suitable for smart wearables, industrial predictive maintenance modules, and medical disposable diagnostics requiring stable component supply, long-term lifecycle assurance, and consistent QFN packaging.
Supply support for MKL03Z32VFK4 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 processing.
The Kinetis KL03 family was designed specifically for ultra-small-form-factor, ultra-low-power edge nodes - prioritizing minimal footprint, nanowatt sleep modes, and integrated analog peripherals to reduce BOM count in battery-powered sensing applications.
FAQ
What is the maximum operating frequency of the MKL03Z32VFK4?
The MKL03Z32VFK4 operates at a maximum core frequency of 48 MHz using its high-accuracy internal reference clock (HIRC). This frequency is fully supported across the specified voltage range (1.71–3.6 V) and industrial temperature range (-40 to +105°C), enabling deterministic real-time response in sensor fusion and control loops without external crystal dependency.
Does the MKL03Z32VFK4 include a factory-programmed bootloader?
Yes, the MKL03Z32VFK4 includes 8 KB of ROM containing a factory-programmed bootloader that supports UART-based flash programming. This eliminates the need for external debug probes during field firmware updates and enables secure, production-line flash provisioning without modifying the application firmware - a key feature confirmed in the KL03P24M48SF0 datasheet Section 3.4.1 and Reference Manual KL03P24M48SF0RM1.
What is the lowest achievable power consumption mode for the MKL03Z32VFK4?
The MKL03Z32VFK4 achieves its lowest power consumption in Very-Low-Leakage Stop Mode 0 (VLLS0), drawing just 77 nA at 3.0 V and 25°C with full RAM retention. This mode retains register state and enables wake via selected interrupts, making it ideal for multi-year battery operation in intermittently active sensor nodes - a value explicitly characterized in Table 10 of the KL03P24M48SF0 datasheet Rev. 5.1.
How many GPIO pins does the MKL03Z32VFK4 provide in its 24-pin QFN package?
The MKL03Z32VFK4 provides 22 general-purpose I/O pins in its 24-pin QFN (VFK4) package. Two pins are dedicated to power (VDD/VSS) and are not configurable as GPIO. All 22 GPIOs support interrupt capability, multiple drive strengths, and alternate functions including UART, I²C, SPI, and ADC inputs - as verified in the "Ordering Information" table and "Pin Assignments" section of the KL03P24M48SF0 datasheet.
Is the MKL03Z32VFK4 qualified for industrial temperature operation?
Yes, the MKL03Z32VFK4 is qualified for industrial temperature operation from -40°C to +105°C, specifically for QFN packages like the VFK4 variant. This rating is explicitly stated in the "Operating Characteristics" section of the KL03P24M48SF0 datasheet Rev. 5.1 and distinguishes it from WLCSP variants, which are rated only to +85°C - confirming suitability for harsh environments such as factory floors and automotive under-hood applications.
MKL03Z32VFK4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 24-VFQFN Exposed Pad
- Series:
- Kinetis KL03
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit Single-Core
- Speed:
- 48MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, LVD, POR, PWM, WDT
- Number of I/O:
- 22
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 7x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MKL03Z32VFK4 FAQ
1.How can I place an order for MKL03Z32VFK4 through Aetrix?
Please submit a Request for Quotation (RFQ) for MKL03Z32VFK4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MKL03Z32VFK4 reliable?
The price and inventory of MKL03Z32VFK4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MKL03Z32VFK4 is usually 5 days.
3.What payment methods are accepted for MKL03Z32VFK4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MKL03Z32VFK4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MKL03Z32VFK4?
MKL03Z32VFK4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MKL03Z32VFK4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MKL03Z32VFK4?
For technical support, including MKL03Z32VFK4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MKL03Z32VFK4 requirements.
6.How does Aetrix verify that MKL03Z32VFK4 is sourced from the original manufacturer or authorized distributors?
All MKL03Z32VFK4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MKL03Z32VFK4 meets industry standards.
7.What is the process for return or replacement of MKL03Z32VFK4?
All MKL03Z32VFK4 units undergo pre-shipment inspection (PSI). If there is an issue with MKL03Z32VFK4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MKL03Z32VFK4 part is unused and in its original packaging.
Return procedure for MKL03Z32VFK4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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