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NXP Semiconductors MKL03Z32VFK4R
- Part No.:
- MKL03Z32VFK4R
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
MKL03Z32VFK4R.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,755
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Product details
Overview
MKL03Z32VFK4R from NXP Semiconductors is an ARM® Cortex®-M0+ microcontroller operating at up to 48 MHz, featuring 32 KB flash, 2 KB SRAM, and 8 KB ROM with integrated bootloader. It delivers ultra-low-power operation (77 nA deep-sleep, 50 µA/MHz run), 22 GPIOs, and integrated analog peripherals including a 12-bit SAR ADC and high-speed comparator - ideal for compact, battery-powered IoT edge nodes such as wireless sensor transceivers and wearable health monitors.
For engineers reviewing the MKL03Z32VFK4R datasheet, MKL03Z32VFK4R pinout, MKL03Z32VFK4R application, or MKL03Z32VFK4R equivalent, key selection criteria include its 24-pin QFN package, -40°C to 105°C industrial temperature range, low-leakage stop modes (VLLS0/VLLS3), and peripheral set (LPUART, I²C, SPI, RTC, PWM) optimized for space-constrained, energy-critical embedded designs.
Technical Context
The MKL03Z32VFK4R implements a single-core ARM Cortex-M0+ CPU with Micro Trace Buffer (MTB) and Bit Manipulation Engine (BME), executing from on-chip flash or SRAM. Its clock system integrates a 48 MHz high-accuracy internal reference (HIRC), 8/2 MHz low-power oscillator (LIRC), and 32–40 kHz crystal support - enabling dynamic frequency scaling across nine low-power modes.
System-level integration includes a boot ROM with UART-based ISP, a 1.2 V internal voltage reference (VREF), and a low-leakage wakeup unit supporting fast wake-from-VLPS in 7.5 µs. Analog subsystem comprises a 7-channel 12-bit SAR ADC (818 ksps), a comparator with 6-bit DAC, and independent analog supply (VDDA) with ±0.1 V differential tolerance relative to VDD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM Cortex-M0+, up to 48 MHz - enables real-time control and firmware execution without external clock source |
| Memory | 32 KB flash / 2 KB SRAM / 8 KB ROM - sufficient for BLE stack + application logic in footprint-constrained devices |
| Power Modes | Nine configurable low-power states including VLLS0 (77 nA) and VLPS (2.2 µA) - extends battery life in intermittent-sensing applications |
| Analog | 12-bit SAR ADC (7 channels, 818 ksps) + comparator with 6-bit DAC - supports precision sensor signal acquisition and threshold detection |
| I/O & Peripherals | 22 GPIOs, LPUART, I²C (1 Mbit/s), SPI, two 2-channel Timer/PWM, RTC - meets interface requirements for sensor hubs and simple HMI |
| Operating Range | 1.71–3.6 V supply, -40°C to 105°C ambient (QFN package) - suitable for industrial and automotive under-hood environments |
Pinout & Package
24-pin QFN (VFK4), 4 mm × 4 mm × 0.65 mm body, 0.5 mm pitch - compatible with standard reflow assembly and IPC-7351B land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Digital power supply | Primary 1.71–3.6 V input; decoupling required per datasheet layout guidelines |
| VSS | Digital ground | Reference return for digital logic and I/O; separate from VSSA for noise isolation |
| VDDA | Analog power supply | Must be within ±0.1 V of VDD; powers ADC, comparator, and VREF circuitry |
| VSSA | Analog ground | Isolated analog reference return; critical for ADC accuracy and noise immunity |
| PTA0/ADC0_SE0 | GPIO / ADC input channel 0 | Configurable as digital I/O or analog input for single-ended sensor measurement |
| PTA1/ADC0_SE1 | GPIO / ADC input channel 1 | Shared function pin enabling flexible analog front-end routing |
| PTA2/UART0_TX | GPIO / UART transmit | Default UART0 output; supports low-power LPUART mode for wake-on-frame |
| PTA3/UART0_RX | GPIO / UART receive | Input with programmable pull-up; supports asynchronous serial communication |
| PTA4/I2C0_SCL | GPIO / I²C clock | Open-drain output with internal pull-up; compliant with 1 Mbit/s Fast-mode Plus timing |
| PTA5/I2C0_SDA | GPIO / I²C data | Open-drain bidirectional line; supports multi-master arbitration and clock stretching |
| PTB0/SPI0_PCS0 | GPIO / SPI chip select 0 | Active-low control for primary SPI slave device selection |
| PTB1/SPI0_SCK | GPIO / SPI clock | Master-generated clock up to 12 MHz; supports CPHA/CPOL configuration |
| PTB2/SPI0_MOSI | GPIO / SPI master-out-slave-in | Transmits data from MCU to peripheral; driven during active clock edges |
| PTB3/SPI0_MISO | GPIO / SPI master-in-slave-out | Receives data from peripheral; sampled on inactive clock edges |
| PTB4/RTC_CLKOUT | GPIO / RTC clock output | Programmable 1 Hz, 32.768 kHz, or 1 kHz output for timekeeping or synchronization |
| PTB5/TPM0_CH0 | GPIO / Timer/PWM channel 0 | Capable of edge-aligned or center-aligned PWM generation for LED dimming or motor control |
| PTB6/TPM0_CH1 | GPIO / Timer/PWM channel 1 | Independent channel for dual-output timing or complementary PWM |
| PTB7/TPM1_CH0 | GPIO / Timer/PWM channel 0 (TPM1) | Second timer module for concurrent PWM or capture operations |
| PTB8/TPM1_CH1 | GPIO / Timer/PWM channel 1 (TPM1) | Enables synchronized dual-channel PWM or quadrature decoding |
| RESET_b | Active-low reset input | Pulled internally; accepts external reset assertion or watchdog timeout signal |
| SWD_DIO | Serial Wire Debug I/O | Two-wire debug interface (SWD) for programming and real-time debugging |
| SWD_CLK | Serial Wire Debug clock | Provides synchronous clock for SWD communication; no external crystal needed |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small 4×4 mm QFN package | Enables PCB area reduction in wearables and miniaturized sensors where board space is ≤100 mm² |
| 77 nA deep-sleep current (VLLS0) | Supports >10-year battery life in coin-cell-powered devices with infrequent wake cycles |
| Integrated 8 KB ROM bootloader | Permits field firmware updates via UART without external programmer or flash loader code |
| 12-bit ADC with internal 1.2 V reference | Eliminates need for external voltage reference IC in precision analog sensing applications |
| LPUART with wake-on-frame | Allows full system sleep while maintaining serial responsiveness - reduces average power in polling-based comms |
Applications
| Wireless Sensor Node | Wearable Health Monitor |
|---|---|
Use Scenario: Battery-powered environmental sensor collecting temperature, humidity, and motion data for BLE transmission every 5 minutes. IC Role / Device Role / Timing Role: Central controller managing sensor readout, data preprocessing, low-power scheduling, and LPUART-to-BLE bridge timing. Use Value: 77 nA VLLS0 mode and 7.5 µs wake time minimize idle power, extending CR2032 battery life beyond 3 years. | Use Scenario: Compact wrist-worn device measuring heart rate via PPG and storing trend data locally before periodic sync. IC Role / Device Role / Timing Role: Real-time signal acquisition host running ADC sampling, digital filtering, and RTC-timestamped data logging. Use Value: Integrated 12-bit ADC with internal VREF and 22 GPIOs enable direct sensor interfacing without external signal conditioning. |
| Industrial Control Edge Node | Smart Home Actuator |
Use Scenario: DIN-rail mounted node monitoring relay status and ambient conditions in HVAC subsystems with 24 V DC input. IC Role / Device Role / Timing Role: Isolated I/O supervisor handling GPIO monitoring, fault detection, and watchdog-triggered safe shutdown. Use Value: -40°C to 105°C rating and robust ESD (±2 kV HBM) ensure reliable operation in electrically noisy industrial enclosures. | Use Scenario: Sub-100 mm² smart plug controlling AC load via triac, reporting energy usage over Wi-Fi via companion MCU. IC Role / Device Role / Timing Role: Dedicated power metering co-processor acquiring zero-crossing and current samples using ADC and timer capture. Use Value: Two independent TPM modules support simultaneous zero-cross detection and RMS calculation without CPU overhead. |
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, 20-pin TSSOP; lower memory, no integrated VREF or ROM bootloader | Suitable for simpler sensor nodes without bootloader or precision analog needs | Select when cost sensitivity outweighs need for integrated analog reference or field-upgrade capability |
| EFM32ZG108F16 | ARM Cortex-M0+, 16 KB flash, 4 KB RAM, 24-pin QFN; higher RAM, no ROM bootloader, different peripheral mix (no LPUART) | Better for RAM-intensive tasks but lacks dedicated low-power UART wake capability | Prefer when application requires larger buffer space and uses SPI-based comms instead of UART |
Compared with STM32L011K4T6 and EFM32ZG108F16, MKL03Z32VFK4R provides greater flash capacity, integrated 1.2 V VREF, and factory-programmed ROM bootloader - reducing BOM count and enabling secure over-the-air updates in resource-constrained IoT endpoints.
Availability
MKL03Z32VFK4R is available at Aetrix Electronics and suitable for wireless sensor nodes, wearable health monitors, industrial control edge nodes, and smart home actuators requiring stable component supply and long-term manufacturability.
Supply support for MKL03Z32VFK4R 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, with core expertise in ARM-based microcontrollers and RF technologies.
The Kinetis KL03 family targets ultra-low-power, ultra-small-form-factor embedded applications - designed specifically for battery-operated edge devices where size, energy efficiency, and integration density are critical constraints.
FAQ
What is the maximum operating temperature for MKL03Z32VFK4R?
The MKL03Z32VFK4R is rated for industrial temperature operation from -40°C to 105°C, validated for QFN packages per NXP datasheet KL03P24M48SF0 Rev. 5.1. This specification applies to ambient conditions during continuous operation with proper thermal design and PCB copper pour.
Does MKL03Z32VFK4R include a hardware bootloader?
Yes, MKL03Z32VFK4R contains 8 KB of ROM with a factory-programmed bootloader supporting UART-based in-system programming (ISP). This eliminates the need for external debug probes during firmware updates and enables field upgrades without modifying hardware.
How many GPIO pins does MKL03Z32VFK4R support?
MKL03Z32VFK4R supports up to 22 general-purpose I/O pins, all configurable with internal pull-up/pull-down resistors (20–50 kΩ), slew-rate control, and drive strength selection. Pin multiplexing allows assignment to UART, I²C, SPI, timers, ADC, and comparator functions.
What low-power modes are available on MKL03Z32VFK4R?
MKL03Z32VFK4R implements nine low-power modes including RUN, WAIT, STOP, VLPS, LLS, and VLLS0–VLLS3. The deepest state, VLLS0, draws just 77 nA at 3.0 V and supports wake via GPIO, RTC alarm, or LPUART frame - critical for multi-year battery operation.
Is MKL03Z32VFK4R pin-compatible with other Kinetis KL03 variants?
MKL03Z32VFK4R shares the same 24-pin QFN (VFK4) package and pinout with other KL03 devices in the VFK4 suffix group (e.g., MKL03Z8VFK4R, MKL03Z16VFK4R), enabling memory-size scalability without PCB redesign. Flash and SRAM sizes differ, but peripheral mapping and electrical characteristics remain consistent.
MKL03Z32VFK4R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 24-VFQFN Exposed Pad
- Series:
- Kinetis KL03
- Packaging:
- Tape & Reel (TR)
- 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:
MKL03Z32VFK4R FAQ
1.How can I place an order for MKL03Z32VFK4R through Aetrix?
Please submit a Request for Quotation (RFQ) for MKL03Z32VFK4R 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 MKL03Z32VFK4R reliable?
The price and inventory of MKL03Z32VFK4R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MKL03Z32VFK4R is usually 5 days.
3.What payment methods are accepted for MKL03Z32VFK4R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MKL03Z32VFK4R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MKL03Z32VFK4R?
MKL03Z32VFK4R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MKL03Z32VFK4R 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 MKL03Z32VFK4R?
For technical support, including MKL03Z32VFK4R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MKL03Z32VFK4R requirements.
6.How does Aetrix verify that MKL03Z32VFK4R is sourced from the original manufacturer or authorized distributors?
All MKL03Z32VFK4R 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 MKL03Z32VFK4R meets industry standards.
7.What is the process for return or replacement of MKL03Z32VFK4R?
All MKL03Z32VFK4R units undergo pre-shipment inspection (PSI). If there is an issue with MKL03Z32VFK4R, 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 MKL03Z32VFK4R part is unused and in its original packaging.
Return procedure for MKL03Z32VFK4R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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