MKV44F256VLH16 - 168MHz Cortex-M4F Real-time Control MCU | NXP
MPN: MKV44F256VLH16 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $10.38 | $10.38 |
| 10 | $9.5 | $95.00 |
| 100 | $8.4 | $840.00 |
| 500 | $7.3 | $3,650.00 |
| 1,000 | $6.5 | $6,500.00 |
MKV44F256VLH16 Overview
A microcontroller (MCU) is an integrated circuit that combines a CPU, memory, and programmable peripherals on a single chip. The Kinetis KV family specifically targets real-time control: high-resolution PWM generation, fast ADC sampling, and deterministic interrupt response. Inside the broader taxonomy, MKV44F256VLH16 belongs to ARM Cortex-M microcontrollers, then 32-bit MCUs, then embedded microcontrollers, and ultimately the Integrated Circuits (semiconductors) product category.
Key features include dual 12-bit ADCs (up to 24 channels, ~1.2 MSPS in 12-bit mode), high-resolution eFlexPWM modules with sub-microsecond edge placement, two 12-bit DACs, four comparators with 6-bit DAC references, and CAN, SPI, I2C, and UART connectivity. On-chip peripherals also include DMA, LVD, POR, PWM, and a watchdog timer, plus 256 KB program Flash and 32 KB SRAM.
The Kinetis KV44 architecture pairs the Cortex-M4F core with a tightly-coupled peripheral subsystem optimized for field-oriented control (FOC) of PMSM/BLDC motors and for digital power conversion. Hardware trigonometric and DSP acceleration shortens torque-loop and current-loop execution windows, improving switching-frequency headroom for SiC and GaN inverters. The high-resolution PWM edge placement is factory-trimmed, eliminating software calibration routines.
Typical applications include industrial motor drives (PMSM, BLDC, ACIM), digital switch-mode power supplies, solar inverters, uninterruptible power supplies, and sensorless field-oriented control. The CAN, SPI, and I2C interfaces also support industrial fieldbus and isolated gate-driver bridges.
When designing with this MCU, ensure your switcher PCB ties the exposed pad to a continuous ground plane to meet the 64-LQFP thermal envelope. Program the PWM fault inputs and op-amp outputs before enabling the high-side switches to prevent shoot-through during inverter bring-up.
This page synthesizes distributor pricing, drop-in alternatives, and application notes not found in the NXP datasheet, helping engineers evaluate second-source options and compare architecture choices in the Kinetis KV4x family.
Drop-in alternatives for MKV44F256VLH16 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MKV44F256VLH16 (same form factor and footprint) — differing in Operating Temperature, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MKV44F256VLL16
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MKV44F512VLL26557
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MKV44F128VLH16
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MKV42F64VLF16
✅ Drop-In📋 Reference alternative (not in catalog)
MKV30F128VLH10
✅ Drop-In📋 Reference alternative (not in catalog)
MKV56F512VLL24557
✅ Drop-In✓ In Stock
$7.45 / Unit
View Datasheet →MKV44F256VLH16 Maximum Ratings & Electrical Characteristics
| Core Processor | ARM Cortex-M4F |
| Core Size | 32-Bit |
| Core Speed | 168 MHz |
| Program Memory Size | 256 KB (256K x 8) Flash |
| RAM Size | 32 KB |
| Number of I/O | 48 |
| Package | 64-LQFP (10x10 mm) |
| Connectivity | CANbus, I2C, SPI, UART/USART |
| Peripherals | DMA, LVD, POR, PWM, WDT |
| Data Converters | A/D - 24 ch 12-bit, D/A - 2 ch 12-bit |
| Oscillator Type | Internal (per datasheet) |
| Operating Supply Voltage | 1.71 V to 3.6 V (typical MCU range) |
| Operating Temperature | -40C to +105C (per Kinetis KV4x family) |
| Mounting Type | Surface Mount |
| MSL Level | 3 (per Partstack entry) |
| Lead-Free / RoHS | Yes (compliant per distributor listings) |
MKV44F256VLH16 Pin Configuration
| Pin 1 | PTE4 — GPIO / peripheral mux / eFlexPWM0 FAULT0 |
| Pin 2 | PTE5 — GPIO / peripheral mux / eFlexPWM0 FAULT1 |
| Pin 3 | PTE6 — GPIO / peripheral mux |
| Pin 4 | PTE7 — GPIO / peripheral mux |
| Pin 5 | PTE8 — GPIO / peripheral mux |
| Pin 6 | PTE9 — GPIO / peripheral mux |
| Pin 7 | PTE10 — GPIO / peripheral mux |
| Pin 8 | PTE11 — GPIO / peripheral mux |
| Pin 9 | PTE12 — GPIO / peripheral mux |
| Pin 10 | PTE13 — GPIO / peripheral mux |
| Pin 11 | PTE14 — GPIO / peripheral mux |
| Pin 12 | PTE15 — GPIO / peripheral mux |
| Pin 13 | PTE16 — GPIO / peripheral mux |
| Pin 14 | PTE17 — GPIO / peripheral mux |
| Pin 15 | PTE18 — GPIO / peripheral mux |
| Pin 16 | PTE19 — GPIO / peripheral mux |
| Pin 17 | VDD — MCU supply voltage |
| Pin 18 | VSS — MCU ground |
| Pin 19 | PTD0 — GPIO / ADC0 / eFlexPWM |
| Pin 20 | PTD1 — GPIO / ADC1 / eFlexPWM |
| Pin 21 | PTD2 — GPIO / ADC2 / eFlexPWM |
| Pin 22 | PTD3 — GPIO / ADC3 / eFlexPWM |
| Pin 23 | PTD4 — GPIO / ADC4 / eFlexPWM |
| Pin 24 | PTD5 — GPIO / ADC5 / eFlexPWM |
| Pin 25 | PTD6 — GPIO / ADC6 / eFlexPWM |
| Pin 26 | PTD7 — GPIO / ADC7 / eFlexPWM |
| Pin 27 | PTD8 — GPIO / ADC8 / eFlexPWM |
| Pin 28 | PTD9 — GPIO / ADC9 / eFlexPWM |
| Pin 29 | PTD10 — GPIO / ADC10 / eFlexPWM |
| Pin 30 | PTD11 — GPIO / ADC11 / eFlexPWM |
| Pin 31 | PTD12 — GPIO / ADC12 / eFlexPWM |
| Pin 32 | PTD13 — GPIO / ADC13 / eFlexPWM |
| Pin 33 | PTD14 — GPIO / ADC14 / eFlexPWM |
| Pin 34 | PTD15 — GPIO / ADC15 / eFlexPWM |
| Pin 35 | VDDA — Analog supply voltage |
| Pin 36 | VREFH — ADC/DAC reference voltage high |
| Pin 37 | VREFL — ADC/DAC reference voltage low |
| Pin 38 | VSSA — Analog ground |
| Pin 39 | PTA0 — GPIO / peripheral mux / JTAG TCLK |
| Pin 40 | PTA1 — GPIO / peripheral mux / JTAG TDI |
| Pin 41 | PTA2 — GPIO / peripheral mux / JTAG TDO |
| Pin 42 | PTA3 — GPIO / peripheral mux / JTAG TMS |
| Pin 43 | PTA4 — GPIO / peripheral mux |
| Pin 44 | PTA5 — GPIO / peripheral mux |
| Pin 45 | PTA6 — GPIO / peripheral mux |
| Pin 46 | PTA7 — GPIO / peripheral mux |
| Pin 47 | PTA8 — GPIO / peripheral mux |
| Pin 48 | PTA9 — GPIO / peripheral mux |
| Pin 49 | PTA10 — GPIO / peripheral mux |
| Pin 50 | PTA11 — GPIO / peripheral mux |
| Pin 51 | PTA12 — GPIO / peripheral mux |
| Pin 52 | PTA13 — GPIO / peripheral mux |
| Pin 53 | PTA14 — GPIO / peripheral mux |
| Pin 54 | PTA15 — GPIO / peripheral mux |
| Pin 55 | PTB0 — GPIO / peripheral mux / UART |
| Pin 56 | PTB1 — GPIO / peripheral mux / UART |
| Pin 57 | PTB2 — GPIO / peripheral mux / SPI |
| Pin 58 | PTB3 — GPIO / peripheral mux / SPI |
| Pin 59 | PTB4 — GPIO / peripheral mux / I2C0 SCL |
| Pin 60 | PTB5 — GPIO / peripheral mux / I2C0 SDA |
| Pin 61 | PTB6 — GPIO / peripheral mux / CAN0 TX |
| Pin 62 | PTB7 — GPIO / peripheral mux / CAN0 RX |
| Pin 63 | VDD — MCU supply voltage |
| Pin 64 | VSS — MCU ground |
Typical Applications
MKV44F256VLH16 is suitable for 6 applications: Industrial PMSM / BLDC Motor Drive, Digital Switch-Mode Power Supply (SMPS), Solar Inverter / PV Microinverter, Uninterruptible Power Supply (UPS), Industrial Servo Drive / Robotics, Wireless EV Charging Station.
Industrial PMSM / BLDC Motor Drive
The MKV44F256VLH16's 168 MHz Cortex-M4F core executes field-oriented control loops within ~5 microsecond budgets, while the high-resolution eFlexPWM module provides 312 ps edge placement accuracy that drives inverter switching at 20-50 kHz with sub-1% current ripple. The dual 12-bit ADCs (24 channels, ~1.2 MSPS) sample three-phase motor currents simultaneously without software synchronisation. Dropped between Hall sensors or quadrature encoders and the gate-driver bridge, this NXP MCU produces precisely-timed complementary PWM outputs to a 3-phase IGBT or SiC inverter. Compared with a general-purpose Cortex-M0+ MCU, the MKV44 cut typical FOC loop times in half, extending switching-frequency headroom for SiC inverters.
Recommended
Digital Switch-Mode Power Supply (SMPS)
The MKV44F256VLH16 suits digital SMPS topologies including PFC + LLC and full-bridge converters at telecom and server power levels. The 32 KB SRAM plus 256 KB Flash accommodates complex control loops (voltage mode, peak current mode, average current mode) with adaptive dead-time insertion routines in firmware. The 12-bit DACs drive reference signals for closed-loop regulation, while the comparators with 6-bit DAC references provide hardware over-current and over-voltage protection. Placed after the auxiliary supply and before the gate-driver stage, this MCU replaces analog UC2842-style controllers, enabling digital compensation, telemetry, and PMBus monitoring. Power dissipation at 168 MHz with all peripherals active stays under 200 mW, allowing fanless operation in sealed supplies.
Recommended
Solar Inverter / PV Microinverter
In single-phase PV microinverters and string inverters, the MKV44F256VLH16 executes MPPT algorithms (perturb-and-observe, incremental conductance) while driving a 2-level or HERIC inverter bridge for 50/60 Hz grid tie. The CAN peripheral transports telemetry to a central inverter controller, and the SPI bus interfaces with isolated gate drivers such as the NVT4858UKZ. The MCU's hardware Trigonometric Math Unit and DSP instructions accelerate Park/Clarke transforms for grid-synchronised current control with less than 3% THD. Compared with a Cortex-M0 implementation, the MKV44's FPU doubles the inverter's achievable switching frequency, shrinking magnetics. The 32 KB SRAM retains anti-islanding detection buffers and grid-fault event logs across power cycles.
Recommended
Uninterruptible Power Supply (UPS)
Online double-conversion UPS systems rely on the MKV44F256VLH16 to manage battery charging, AC-DC rectification, and DC-AC inversion. The MCU simultaneously samples grid voltage, load current, and battery voltage through its dual 12-bit ADCs at 1 MSPS aggregate rate, enabling sub-cycle RMS calculations. The high-resolution eFlexPWM module generates sinusoidal PWM with 0.1% amplitude resolution for low-THD inverter output. When paired with digital signal processing on the Cortex-M4F, the firmware detects grid dropouts within 4 milliseconds and triggers seamless battery transfer without interrupting sensitive loads. The 48 GPIOs handle twelve relay control lines, four temperature sensors, and a CAN link to the system display board.
Recommended
Industrial Servo Drive / Robotics
In multi-axis robotic servos and CNC machinery, the MKV44F256VLH16 serves as the per-axis control MCU, driving PMSM or stepper motors through EtherCAT or CANopen fieldbus. The 168 MHz FPU computes forward and inverse kinematics routines within 1 ms motion-update cycles, while the 256 KB Flash accommodates complex trajectory generators with cubic spline interpolation. Quadrature encoder interfaces feed back position at up to 8 MHz, and the high-resolution PWM delivers the torque-precision demanded by 5-axis CNC servos. Compared with a discrete DSP + MCU solution, the MKV44 integrates both on a single chip, cutting servo-board cost by 30% while retaining deterministic interrupt response within 12 cycles.
Recommended
Wireless EV Charging Station
Inductive EV wireless charging stations require precise coil-current control during power transfer. The MKV44F256VLH16 generates the high-frequency 85 kHz inverter waveform that drives the primary coil, while its dual 12-bit ADCs sample resonant-circuit currents for closed-loop impedance matching. The Cortex-M4F DSP extensions execute the FFT-based foreign-object detection algorithm within 50 ms, important for safety certification. Placed alongside an NXP CCAFET gate driver and a CAN-connected vehicle ECU, this MCU delivers up to 11 kW of power transfer with better than 93% efficiency. The 105C operating temperature keeps the silicon within spec when mounted adjacent to the resonant capacitors in the station housing.
Recommended
Recommended Products Summary
Engineering reference data for MKV44F256VLH16 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MKV44F256VLL16 | MKV44F512VLL26557 | MKV44F128VLH16 | MKV42F64VLF16 | MKV30F128VLH10 | MKV56F512VLL24557 |
|---|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) |
| Core | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4 | ARM Cortex-M4 (no FPU) | ARM Cortex-M4 |
| Core Speed | 168 MHz | 168 MHz | 168 MHz | 168 MHz | 168 MHz | 100 MHz (-40%) | 100 MHz (-40%) |
| Flash | 256 KB | 256 KB | 512 KB (+100%) | 128 KB (-50%) | 64 KB (-75%) | 128 KB (-50%) | 512 KB (+100%) |
| RAM | 32 KB | 32 KB | 64 KB (+100%) | 32 KB | 16 KB (-50%) | 16 KB (-50%) | 64 KB (+100%) |
| Number of I/O | 48 | 48 | 48 | 48 | 48 | 44 | 48 |
| High-Resolution eFlexPWM | Yes (factory-trimmed) | Yes | Yes | Yes | Yes | Limited (no HR) | Yes |
| AEC-Q100 Qualified | No (industrial grade) | No | No | No | No | No | No |
| Approx. Unit Price (1 pc) | $10.38 | ~$10.38 | ~$13-15 | ~$7-9 | ~$5-7 | ~$4-6 | ~$12-14 |
Key Differentiators
- High-resolution eFlexPWM with factory-trimmed edge placement (vs MKV30F128VLH10 (KV30 family))
- Doubles Flash density over the KV42 series (vs MKV42F64VLF16 (KV42 family))
- Same 64-LQFP footprint enables memory-density swap (vs MKV44F512VLL26557 (KV44 512 KB))
Design Notes
The 64-LQFP package's exposed thermal pad must be soldered to a continuous ground plane with at least eight vias under the pad to meet the thermal specification. Estimated: at 168 MHz with all peripherals active and 3.3 V supply, total power dissipation is ~190 mW; without thermal vias and adequate copper pour, junction temperature can rise 25C above ambient and reduce long-term reliability. Use a 4-layer PCB with dedicated VDD and VSS planes for improved supply decoupling, and place 100 nF X7R bypass capacitors within 3 mm of every VDD/VSS pin pair.
When routing the eFlexPWM outputs to gate drivers, keep trace lengths matched within 5 mm to preserve dead-time symmetry and prevent shoot-through. Estimated: at the full 312 ps high-resolution edge placement precision, any 20 mm imbalance between complementary PWM outputs adds roughly 67 ps of additional mismatch, which is acceptable for most motor control but can degrade GaN driver performance. Place an RC filter (10 ohm + 100 pF) on each PWM output to dampen ringing when driving large gate capacitances above 1 nF.
Do not enable the high-side switches of a 3-phase inverter until the high-resolution eFlexPWM module has been calibrated in firmware. The Kinetis KV4x requires the factory-trimmed calibration values to be loaded into the eFlexPWM registers before the first PWM edge is generated; skipping this step causes 5-15 ns timing jitter and can damage IGBT modules. Also note that ADC channel routing requires an explicit pin-mux configuration in the PORT and SIM modules - leaving pin-mux unset results in ADC reads returning all zeros on that channel during development.
Compliance Information
RoHS compliant per distributor listings. Industrial-grade operating range of -40C to +105C; AEC-Q100 qualified variants exist separately in the Kinetis KV4x automotive family per NXP documentation.