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NXP Semiconductors MKL17Z256VFT4
- Part No.:
- MKL17Z256VFT4
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
MKL17Z256VFT4.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,097
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Product details
Overview
MKL17Z256VFT4 from NXP Semiconductors is a 48 MHz ARM® Cortex®-M0+ microcontroller with 256 KB flash, 32 KB SRAM, and 16 KB ROM bootloader, designed for cost-sensitive, battery-powered applications requiring low-power general-purpose connectivity. It delivers 54 µA/MHz in very low power run mode, 1.96 µA in VLLS3 deep sleep (RAM + RTC retained), and supports up to 40 GPIOs in a 48-pin QFN package.
For engineers reviewing the MKL17Z256VFT4 datasheet, MKL17Z256VFT4 pinout, MKL17Z256VFT4 application, or MKL17Z256VFT4 equivalent, this page provides verified technical context, validated low-power performance metrics, confirmed peripheral integration (FlexIO, dual UART, 16-bit ADC), and real-world selection guidance for embedded sensor nodes, portable medical devices, and industrial IoT edge controllers.
Technical Context
The MKL17Z256VFT4 implements an ARM Cortex-M0+ core with integrated Micro Trace Buffer and Bit Manipulation Engine, operating at up to 48 MHz using a high-accuracy internal 48 MHz reference clock (±0.5%). Its system architecture includes a 4-channel asynchronous DMA controller, two-pin SWD debug interface, and low-leakage wakeup unit enabling rapid transition from VLLS3 (1.96 µA) to active run mode in 93–104 µs.
Peripherals are optimized for flexible low-power operation: two low-power UARTs remain functional in deep-sleep modes; FlexIO emulates UART/I²C/SPI/I²S/PWM; the 16-bit ADC achieves 818 ksps with internal Vref; and the 12-bit DAC supports analog output generation-all while maintaining voltage operation from 1.71 V to 3.6 V across –40 °C to 105 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM Cortex-M0+, 48 MHz max - enables real-time control with deterministic interrupt latency and efficient code density for memory-constrained designs. |
| Memory | 256 KB flash / 32 KB SRAM / 16 KB ROM - sufficient for secure boot, firmware updates via embedded bootloader, and local data buffering without external memory. |
| Power Consumption | 1.96 µA in VLLS3 (RTC + RAM retained) - supports multi-year battery life in always-on sensor endpoints with periodic wake-up. |
| Analog Peripherals | 16-bit 818 ksps ADC (18 SE/3 DP channels) + 12-bit DAC + high-speed comparator with 6-bit DAC reference - enables precision signal acquisition and closed-loop analog control. |
| Package & I/O | 48-pin QFN (7×7 mm, 0.5 mm pitch), 40 GPIOs (24 interrupt-capable, 6 high-drive) - balances board space, thermal performance, and routing flexibility for compact PCBs. |
| Operating Range | 1.71–3.6 V supply, –40 °C to 105 °C - suitable for industrial environments and battery-operated devices with wide input voltage tolerance. |
| Clock Sources | 48 MHz HIRC (±0.5%), 8/2 MHz LIRC, 32 kHz–32 MHz crystal support - eliminates need for external timing components in most configurations. |
Pinout & Package
Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch, 0.65 mm thickness), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VSS, VSSA | Power and ground rails | Dual-domain supply (digital/analog) with ≤0.1 V differential tolerance ensures stable ADC reference and noise isolation. |
| PTA0–PTA31, PTB0–PTB15, PTC0–PTC15, PTD0–PTD15 | GPIO multiplexed pins | 40 configurable I/Os with interrupt capability, 6 high-drive (25 mA) outputs for direct LED/drivers; all support digital filtering and slew-rate control. |
| RESET_b | Active-low reset input | Asynchronous reset with internal pull-up; accepts 1.2–3.6 V logic; compatible with external RC or pushbutton reset circuits. |
| SWD_CLK, SWD_DIO | Two-pin Serial Wire Debug interface | Enables full debug, flash programming, and trace via standard ARM SWD protocol-no JTAG header required. |
| XTAL32, EXTAL32 | 32 kHz crystal oscillator terminals | Supports low-power RTC operation with ±20 ppm accuracy; optional internal load capacitors reduce BOM count. |
Key Features
| Feature | Design Value |
|---|---|
| Embedded ROM bootloader | 16 KB ROM with UART/USB HID ISP support enables field firmware updates without external programmer or debug probe. |
| FlexIO module | Configurable logic engine supporting UART/I²C/SPI/I²S/PWM emulation - replaces discrete glue logic and extends peripheral count without silicon change. |
| Low-power timer (LPTMR) | Operates in VLLS1/VLLS3 using 1 kHz LPO clock - enables precise wake-up intervals down to 1 ms with sub-µA current overhead. |
| High-accuracy internal clocks | 48 MHz HIRC (±0.5%) and 8/2 MHz LIRC (±3%) eliminate external crystals for most timing-critical functions, reducing BOM and layout complexity. |
| Advanced flash security | Flash protection via backdoor key access and mass erase disable prevents unauthorized firmware readout or modification in deployed units. |
Applications
| Wearable Health Monitor | Smart Utility Meter |
|---|---|
Use Scenario: Continuous ECG/PPG signal acquisition with Bluetooth LE transmission during periodic wake-ups. IC Role / Device Role / Timing Role: Primary MCU managing analog front-end, ADC sampling, real-time filtering, BLE stack, and ultra-low-power sleep scheduling. Use Value: 1.96 µA VLLS3 retention enables >5-year coin-cell operation; 16-bit ADC resolution captures physiological waveform detail; FlexIO offloads UART-to-BLE protocol translation. |
Use Scenario: Battery-backed electricity/water meter logging consumption data hourly and transmitting via NB-IoT/LPWAN. IC Role / Device Role / Timing Role: System controller handling metrology ADC, RTC timestamping, secure storage, and modem interface with strict duty-cycle management. Use Value: 40 GPIOs support isolated metrology sensing and modem control lines; 12-bit DAC calibrates sensor offsets; -40 °C to 105 °C rating ensures outdoor enclosure reliability. |
| Industrial Sensor Node | Portable Diagnostic Tool |
Use Scenario: Wireless vibration/temperature node in factory machinery, sampling every 10 seconds and transmitting via LoRaWAN. IC Role / Device Role / Timing Role: Edge processing unit performing FFT preprocessing, event-triggered wake-up, and secure OTA update handling. Use Value: 54 µA/MHz run efficiency extends battery life under intermittent compute load; dual low-power UARTs enable simultaneous sensor and radio communication. |
Use Scenario: Handheld device for point-of-care blood analysis, requiring precise fluidic actuation, optical detection, and USB-C host interface. IC Role / Device Role / Timing Role: Central controller coordinating motor drivers, photodiode ADC, display, and USB CDC communication. Use Value: High-drive GPIOs directly drive solenoid valves (25 mA); 12-bit DAC sets photodiode bias voltage; 48 MHz core handles real-time USB packet assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32L072KBU6 | 32-bit ARM Cortex-M0+, 32 KB flash, 20 KB SRAM, 1.65–3.6 V, 36-pin WLCSP; lower memory and I/O count. | Better suited for ultra-miniature wearables where 36-pin WLCSP footprint is critical; lacks FlexIO and has no 12-bit DAC. | Select when board area is constrained below 3 mm² and peripheral flexibility is secondary to size. |
| EFM32PG12B500F1024GL125 | 32-bit ARM Cortex-M4, 1024 KB flash, 256 KB RAM, 125 MHz, 120-pin QFP; higher performance and memory, larger package. | Targets complex edge AI inference or multi-protocol gateways; consumes >10× more active current than MKL17Z256VFT4. | Choose only when >100 DMIPS or floating-point acceleration is required-otherwise over-specifies cost and power. |
Compared with STM32L072KBU6 and EFM32PG12B500F1024GL125, the MKL17Z256VFT4 uniquely balances 256 KB flash, 40 GPIOs, FlexIO programmability, and sub-2 µA deep-sleep current in a 48-QFN package-making it optimal for mid-tier battery-powered edge nodes needing peripheral adaptability without over-engineering.
Availability
MKL17Z256VFT4 is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, industrial sensor nodes, and portable diagnostic tools requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature and voltage ranges.
Supply support for MKL17Z256VFT4 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 KL17 family was engineered specifically for cost-sensitive, battery-powered general-purpose connectivity applications-emphasizing ultra-low-power operation, integrated analog peripherals, and flexible serial interface emulation via FlexIO.
FAQ
What is the maximum operating frequency of the MKL17Z256VFT4?
The MKL17Z256VFT4 features an ARM Cortex-M0+ core rated for up to 48 MHz operation using its high-accuracy internal reference clock (HIRC), which maintains ±0.5% accuracy across voltage and temperature. This frequency is fully supported in all active power modes including VLPR and RUN, and enables deterministic real-time execution for time-critical embedded tasks without requiring an external crystal.
Does the MKL17Z256VFT4 support in-system programming without a debug probe?
Yes, the MKL17Z256VFT4 includes 16 KB of embedded ROM containing a factory-programmed bootloader that supports UART-based in-system programming (ISP). This allows firmware updates directly over a serial interface using standard terminal software-no SWD debugger or external programmer is needed for field upgrades, simplifying maintenance for deployed devices.
What is the lowest power consumption state achievable with RAM and RTC retained on the MKL17Z256VFT4?
The MKL17Z256VFT4 achieves 1.96 µA in Very-Low-Leakage Stop Mode 3 (VLLS3) while retaining full SRAM contents and RTC functionality. This mode disables the CPU, flash, and most peripherals but keeps the 32 kHz RTC oscillator and RAM powered-enabling years of operation on a single coin cell in applications like utility meters or environmental sensors.
How many analog-to-digital converter channels does the MKL17Z256VFT4 support?
The MKL17Z256VFT4 integrates a 16-bit successive-approximation ADC with up to 18 single-ended or 3 differential input channels. Channel selection is fully configurable via software, and the module includes a high-accuracy internal voltage reference (Vref) to ensure stable conversion results across supply and temperature variations without external reference components.
Is the MKL17Z256VFT4 pin-compatible with other members of the KL17 family?
The MKL17Z256VFT4 shares the same 48-pin QFN (7×7 mm) package and pinout with the MKL17Z128VFT4, enabling direct flash-memory-scalable migration within identical PCB layouts. However, it is not pin-compatible with 32-pin, 64-pin, or WLCSP variants-those require separate board designs due to differing pin counts, spacing, and signal assignments.
MKL17Z256VFT4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 48-UFQFN 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, I2S, LVD, POR, PWM, WDT
- Number of I/O:
- 40
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 18x16b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MKL17Z256VFT4 FAQ
1.How can I place an order for MKL17Z256VFT4 through Aetrix?
Please submit a Request for Quotation (RFQ) for MKL17Z256VFT4 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 MKL17Z256VFT4 reliable?
The price and inventory of MKL17Z256VFT4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MKL17Z256VFT4 is usually 5 days.
3.What payment methods are accepted for MKL17Z256VFT4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MKL17Z256VFT4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MKL17Z256VFT4?
MKL17Z256VFT4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MKL17Z256VFT4 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 MKL17Z256VFT4?
For technical support, including MKL17Z256VFT4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MKL17Z256VFT4 requirements.
6.How does Aetrix verify that MKL17Z256VFT4 is sourced from the original manufacturer or authorized distributors?
All MKL17Z256VFT4 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 MKL17Z256VFT4 meets industry standards.
7.What is the process for return or replacement of MKL17Z256VFT4?
All MKL17Z256VFT4 units undergo pre-shipment inspection (PSI). If there is an issue with MKL17Z256VFT4, 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 MKL17Z256VFT4 part is unused and in its original packaging.
Return procedure for MKL17Z256VFT4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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