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NXP Semiconductors MKL14Z32VFT4
- Part No.:
- MKL14Z32VFT4
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
MKL14Z32VFT4.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,270
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Product details
Overview
MKL14Z32VFT4 from NXP Semiconductors (formerly Freescale) is a 48 MHz ARM® Cortex®-M0+ based microcontroller in the Kinetis KL14 sub-family, designed for ultra-low-power embedded applications. It integrates 32 KB flash, 4 KB SRAM, 40 GPIOs, a 12-bit SAR ADC, two UARTs, two I²C modules, two SPI interfaces, and six-channel Timer/PWM (TPM), targeting battery-powered sensor nodes and industrial control endpoints.
For engineers reviewing the MKL14Z32VFT4 datasheet, MKL14Z32VFT4 pinout, MKL14Z32VFT4 application, or MKL14Z32VFT4 equivalent, this page delivers verified technical context, low-power mode behavior, peripheral adder currents, QFN-48 package mapping, and validated alternative MCUs for entry-level 32-bit designs requiring -40°C to 105°C operation and 1.71–3.6 V supply.
Technical Context
The MKL14Z32VFT4 implements a single-core ARM Cortex-M0+ processor with tightly coupled Bit Manipulation Engine (BME) and Micro Trace Buffer (MTB) for debug visibility. Its clock system supports multiple modes including FEI, FBE, BLPI, and VLPR, enabling dynamic switching between 48 MHz run and sub-μA stop modes like VLLS0 (0.12 μA typical at 25°C).
Power management includes nine low-power modes (VLPR, VLPS, LLS, VLLS0–3), with full state retention down to 2 μA static current and 4 μs wakeup from VLPS. Peripheral clock gating, 90 nm TFS process, and zero-wait-state flash controller jointly enable its 47 μA/MHz active efficiency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM Cortex-M0+, up to 48 MHz - delivers industry-leading throughput per MHz for cost-sensitive real-time control. |
| Flash / RAM | 32 KB flash / 4 KB SRAM - sufficient for BLE stack + sensor fusion firmware in compact footprint. |
| GPIO Count | 40 programmable I/O pins - matches QFN-48 package pin count with multiplexed analog/digital functions. |
| ADC | 12-bit SAR ADC with hardware averaging - supports precision temperature or voltage monitoring without external signal conditioning. |
| Low-Power Modes | Nine configurable modes including VLLS0 (0.12 μA typ) - enables multi-year battery life in wake-on-event sensor systems. |
| Operating Voltage | 1.71–3.6 V - compatible with single-cell Li-ion, Li-SOCl₂, and 3.3 V regulated supplies. |
| Temperature Range | -40°C to +105°C - qualified for under-hood automotive sensors and industrial motor controllers. |
Pinout & Package
MKL14Z32VFT4 uses a 48-pin QFN (VFT4) package: 7 mm × 7 mm × 1 mm body, 0.5 mm pitch, exposed thermal pad. Pin assignments follow KL14 signal multiplexing per datasheet Rev 5 Section 5.2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD / VSS | Digital power / ground | Four dedicated VDD/VSS pairs ensure stable core voltage under transient load; thermal pad must be soldered for thermal dissipation. |
| PTA0–PTA31, PTB0–PTB15, PTC0–PTC7, PTD0–PTD7 | GPIO bank terminals | 40 total GPIOs mapped across four ports; each pin supports interrupt-on-change, slew rate control, and internal pull-up/down (20–50 kΩ). |
| ADC0_SE0–ADC0_SE15 | Analog input channels | 16-channel ADC input mapping - supports simultaneous sampling of thermistors, potentiometers, and current-sense shunts. |
| UART0_TX / UART0_RX | Asynchronous serial interface | Dedicated pins for low-power UART communication at up to 115.2 kbps; supports automatic baud rate detection in STOP mode. |
| SPI0_PCS0–SPI0_SCK | SPI master/slave interface | Four-pin SPI0 bus - enables direct connection to digital sensors (e.g., pressure, IMU) with hardware chip select control. |
| I²C0_SCL / I²C0_SDA | Inter-Integrated Circuit bus | Open-drain I²C interface compliant with standard/fast-mode (100/400 kHz); internal pull-ups usable for point-to-point connections. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power run mode | 47 μA/MHz at 48 MHz - reduces energy per instruction in always-on edge nodes. |
| Full-state-retention stop mode | 2 μA with 4 μs wakeup - preserves RAM and register context while minimizing sleep current. |
| On-chip analog comparator | Includes 6-bit DAC and programmable reference - enables threshold-triggered wakeups without external components. |
| Low-leakage wakeup unit | Supports GPIO, RTC, LPTMR, and comparator as wake sources - eliminates need for external interrupt controllers. |
| SWD debug interface | 2-pin Serial Wire Debug with MTB - provides non-intrusive trace capture during ultra-low-power operation. |
Applications
| Smart Utility Metering | Industrial Sensor Node |
|---|---|
|
Use Scenario: Battery-powered gas/water meter with pulse counting, temperature compensation, and RF telemetry. IC Role / Device Role / Timing Role: Primary MCU executing metrology algorithms, managing EEPROM logging, and coordinating LoRaWAN transmission windows. Use Value: VLLS0 mode (0.12 μA typ) extends 10-year battery life; integrated 12-bit ADC directly digitizes RTD bridge outputs. |
Use Scenario: DIN-rail mounted vibration/temperature monitor in factory automation. IC Role / Device Role / Timing Role: Real-time data acquisition hub interfacing MEMS accelerometers and thermistors via I²C/SPI, then forwarding via RS-485. Use Value: Nine low-power modes allow dynamic scaling between 48 MHz burst processing and 2 μA deep sleep between samples. |
| Medical Wearable | Automotive Body Control |
|
Use Scenario: ECG patch with dry-electrode sensing, motion artifact correction, and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: Signal preprocessing engine running FIR filters on ADC data, managing BLE advertising intervals, and detecting arrhythmia events. Use Value: Bit Manipulation Engine accelerates bit-field operations in protocol stacks; 105°C rating supports skin-contact thermal safety margin. |
Use Scenario: Door module controlling window lift, mirror fold, and interior lighting with LIN bus interface. IC Role / Device Role / Timing Role: Local intelligence node handling PWM dimming, switch debouncing, and LIN physical layer timing compliance. Use Value: Integrated COP watchdog and LPO clock ensure fail-safe operation; 40 GPIOs support mixed analog/digital I/O without external expanders. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MKL25Z32VLH4 | Higher memory (32 KB flash/8 KB RAM), 64-pin LQFP, USB device controller - adds host capability but increases BOM cost and layout area. | Better suited for USB-connected diagnostic tools; less optimal for space-constrained battery devices due to larger package. | Select when USB interface or >4 KB RAM is required; avoid if QFN-48 footprint and minimal power budget are mandatory. |
| STM32L053R8T6 | ARM Cortex-M0+, 32 KB flash/8 KB RAM, 48-pin QFN, 12-bit ADC, but lacks integrated comparator DAC and has higher VLLS0 current (350 nA vs 120 nA). | Strong for generic low-power sensing; weaker for analog wake-on-threshold due to missing on-die DAC reference. | Prefer when ST ecosystem toolchain alignment is critical; verify comparator functionality isn't needed before substituting. |
Compared with MKL14Z32VFT4, MKL25Z32VLH4 offers USB and more RAM at the expense of package size and power efficiency, while STM32L053R8T6 trades analog wake capability for broader toolchain support - both require PCB redesign and firmware adaptation.
Availability
MKL14Z32VFT4 is available at Aetrix Electronics and suitable for smart utility metering, industrial sensor nodes, medical wearables, and automotive body control applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MKL14Z32VFT4 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 acquired Freescale in 2015 and maintains the Kinetis portfolio as part of its broad MCU offering. The company focuses on secure, scalable, and energy-efficient silicon for automotive, industrial, and IoT markets.
The MKL14Z32VFT4 belongs to the Kinetis KL14 sub-family - engineered specifically for entry-level 32-bit applications demanding ultra-low-power operation, robust analog integration, and seamless migration from 8/16-bit platforms.
FAQ
What is the maximum operating frequency of the MKL14Z32VFT4 core?
The MKL14Z32VFT4 features an ARM Cortex-M0+ core rated for up to 48 MHz operation in normal run mode. This frequency is achievable using the MCG in PEE mode with an external crystal oscillator. In very-low-power run (VLPR) mode, the core is limited to 4 MHz to maintain sub-microamp current draw while retaining full register and RAM state.
Does the MKL14Z32VFT4 support hardware-based cryptographic acceleration?
No, the MKL14Z32VFT4 does not include dedicated cryptographic accelerators such as AES or SHA engines. It relies on software libraries for encryption tasks. Security functions are limited to an 80-bit unique identification number per chip and basic memory protection via the system memory management unit (MMU)-lite features in the Cortex-M0+ core.
What is the minimum supply voltage for reliable flash programming on the MKL14Z32VFT4?
The MKL14Z32VFT4 requires a minimum supply voltage of 1.71 V for flash write and erase operations, matching its general operating range. Flash programming must occur within the full 1.71–3.6 V window; attempting writes below 1.71 V may result in incomplete page programming or verification failure, as specified in Section 2.2.1 of the KL14P80M48SF0 datasheet.
How many UART interfaces does the MKL14Z32VFT4 provide, and are they all low-power capable?
The MKL14Z32VFT4 integrates two full UART modules and one dedicated low-power UART (LP UART). All three support asynchronous communication, but only the LP UART retains functionality and wakeup capability in VLPS, LLS, and VLLSx stop modes - the standard UARTs require RUN or WAIT mode for operation.
Can the MKL14Z32VFT4 operate from an internal RC oscillator without an external crystal?
Yes, the MKL14Z32VFT4 can operate entirely from internal oscillators: the 4 MHz IRC (internal reference clock) and 32 kHz LPO (low-power oscillator) support all low-power modes and boot sequences. External crystals are optional for higher accuracy timing in UART or RTC applications, but not required for basic MCU functionality or flash execution.
MKL14Z32VFT4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 48-VFQFN Exposed Pad
- Series:
- Kinetis KL1
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit Single-Core
- Speed:
- 48MHz
- Connectivity:
- I2C, LINbus, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 40
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 15x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MKL14Z32VFT4 FAQ
1.How can I place an order for MKL14Z32VFT4 through Aetrix?
Please submit a Request for Quotation (RFQ) for MKL14Z32VFT4 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 MKL14Z32VFT4 reliable?
The price and inventory of MKL14Z32VFT4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MKL14Z32VFT4 is usually 5 days.
3.What payment methods are accepted for MKL14Z32VFT4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MKL14Z32VFT4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MKL14Z32VFT4?
MKL14Z32VFT4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MKL14Z32VFT4 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 MKL14Z32VFT4?
For technical support, including MKL14Z32VFT4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MKL14Z32VFT4 requirements.
6.How does Aetrix verify that MKL14Z32VFT4 is sourced from the original manufacturer or authorized distributors?
All MKL14Z32VFT4 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 MKL14Z32VFT4 meets industry standards.
7.What is the process for return or replacement of MKL14Z32VFT4?
All MKL14Z32VFT4 units undergo pre-shipment inspection (PSI). If there is an issue with MKL14Z32VFT4, 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 MKL14Z32VFT4 part is unused and in its original packaging.
Return procedure for MKL14Z32VFT4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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