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NXP Semiconductors MKV31F256VLH12
- Part No.:
- MKV31F256VLH12
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
MKV31F256VLH12.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:614
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Product details
Overview
MKV31F256VLH12 from NXP Semiconductors is a 120 MHz Arm® Cortex®-M4-based microcontroller with FPU and DSP extensions, featuring 256 KB flash, 48 KB SRAM, dual 16-bit ADCs (1.2 MS/s), 12-channel motor control PWM timers, and operation from 1.71–3.6 V across –40 to 105°C - deployed in industrial motor drives and servo controllers.
For engineers reviewing the MKV31F256VLH12 datasheet, MKV31F256VLH12 pinout, MKV31F256VLH12 application, or MKV31F256VLH12 equivalent, this page delivers verified technical context, package-specific I/O count (46 GPIO), real-time peripheral timing constraints, low-power mode current values (e.g., 0.12 µA in VLLS0 with POR disabled), and validated alternative MCUs for motor control firmware migration.
Technical Context
The MKV31F256VLH12 integrates an Arm Cortex-M4 core with hardware floating-point unit and DSP instructions, delivering 1.25 Dhrystone MIPS/MHz at 120 MHz. Its clock system includes three internal oscillators (32 kHz, 4 MHz, 48 MHz), a crystal oscillator (3–32 MHz), and a multi-purpose clock generator with PLL and FLL for precise motor timing synchronization.
It supports deterministic real-time control via three independent time bases for 12-channel PWM generation, quadrature decoder support on two timers, and dual 16-bit SAR ADCs with simultaneous sampling capability - all operating within a single 64-pin LQFP package with 46 usable GPIOs and dedicated analog supply (VDDA) pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Arm Cortex-M4 with FPU and DSP instruction set - enables real-time vector math for field-oriented control (FOC) without software emulation |
| Max Clock Frequency | 120 MHz system/core clock - supports high-resolution PWM (e.g., 150 ns period resolution) and fast closed-loop execution |
| Memory | 256 KB embedded flash + 48 KB SRAM - sufficient for dual-motor FOC with safety monitoring and bootloader space |
| Analog Peripherals | Dual 16-bit SAR ADCs (1.2 MS/s in 12-bit mode), 12-bit DAC, two analog comparators with 6-bit DAC - supports sensorless commutation and analog feedback conditioning |
| I/O Count & Package | 46 general-purpose I/O pins in 64-pin LQFP (10 × 10 mm, 0.5 mm pitch) - fits compact motor driver PCB layouts with routing headroom |
| Operating Voltage/Temp | 1.71–3.6 V supply, –40 to 105°C ambient - qualified for under-hood automotive and industrial enclosure environments |
| Low-Power Modes | VLLS0 current as low as 0.12 µA (POR disabled) - enables battery-backed standby in motion-control subsystems |
Pinout & Package
64-pin LQFP (10 × 10 × 1.6 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3. Package marking: MKV31F256VLH12.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VSS, VSSA | Power and ground domains | Separate digital/analog supplies reduce noise coupling into ADC/DAC paths; VDDA must be ≥1.71 V for full 12-bit ADC accuracy |
| PTA0–PTA31, PTB0–PTB15, PTC0–PTC15, PTD0–PTD15, PTE0–PTE15 | GPIO multiplexed signals | 46 total usable I/Os; specific pins assigned to ADC0/1 inputs, PWM outputs (FTM0–FTM2), UART0–UART3, I²C0–I²C1, SPI0–SPI1 |
| XTAL0/XTAL1 | Primary crystal oscillator terminals | Supports 3–32 MHz crystals; required for high-accuracy system clock when PLL is active |
| RESET_b | Active-low reset input | Asynchronous reset with internal pull-up; compatible with external supervisor ICs for fail-safe motor shutdown |
| JTAG/SWD pins (TMS, TCK, TDI, TDO, SWDIO, SWCLK) | Debug interface | Enables real-time trace and flash programming during development; SWD uses only two pins vs. five for JTAG |
Key Features
| Feature | Design Value |
|---|---|
| Dual 16-bit ADC with simultaneous sampling | Enables synchronized current sensing across two motor phases for accurate FOC torque calculation without sample skew |
| 12-channel motor control PWM across 3 time bases | Allows independent timing for gate drive, braking, and auxiliary control signals - critical for multi-axis servo coordination |
| Hardware CRC module and flash access control | Ensures firmware integrity verification and prevents unauthorized code readout in production motor firmware |
| Quadrature decoder on two timers | Direct position/speed capture from incremental encoders without CPU overhead - reduces jitter in position loops |
| 128-bit unique chip ID | Supports device-level serialization for motor calibration data binding and anti-counterfeiting in OEM production |
Applications
| Industrial Motor Drives | Automotive HVAC Blower Control |
|---|---|
Use Scenario: Closed-loop vector control of 3-phase BLDC motors in variable-frequency drives. IC Role / Device Role / Timing Role: Real-time execution of FOC algorithm, PWM generation with <150 ns dead-time control, and ADC-triggered current sampling. Use Value: 120 MHz core + FPU achieves sub-1 µs current loop execution, enabling >20 kHz switching frequency with stable torque ripple. |
Use Scenario: Intelligent speed regulation of cabin air blower motors using hall-effect rotor position feedback. IC Role / Device Role / Timing Role: Quadrature decoding of encoder signals, PWM modulation, and LIN bus communication with HVAC ECU. Use Value: Integrated quadrature decoder eliminates external logic, reducing BOM cost while maintaining ±1 RPM speed accuracy over temperature. |
| Robotics Joint Actuators | Appliance Washing Machine Inverter |
Use Scenario: High-bandwidth torque control in collaborative robot joint modules with integrated current sensing. IC Role / Device Role / Timing Role: Simultaneous dual ADC sampling of phase currents, real-time PID+FF computation, and 12-channel PWM output for dual-motor actuation. Use Value: 48 KB SRAM allows local storage of lookup tables for nonlinear friction compensation, improving positioning repeatability to ±0.05°. |
Use Scenario: Sensorless FOC of permanent magnet drum motor in high-efficiency washing machines. IC Role / Device Role / Timing Role: Back-EMF estimation using ADC and comparator, 12-bit DAC for reference voltage generation, and SPI-connected EEPROM for calibration data. Use Value: On-chip 12-bit DAC replaces external op-amp circuitry, reducing component count by 3 parts per inverter board. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar motor control microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MKV31F512VLH12 | 512 KB flash, same 64-pin LQFP package and peripheral set - no change in I/O count or timing specs | Required when bootloader + dual-application firmware + safety monitor exceed 256 KB flash capacity | Select when future firmware expansion or ASIL-B functional safety partitioning demands larger code memory. |
| MKE15Z64VLH4 | Arm Cortex-M0+, 48 MHz max, 64 KB flash, 8 KB SRAM, 40 GPIO - smaller footprint, lower power, no FPU | Suitable for simpler scalar-controlled fans or pumps where vector control is not needed | Choose for cost-sensitive, thermally constrained applications where 120 MHz performance and FOC are unnecessary. |
Compared with MKV31F256VLH12, MKV31F512VLH12 offers doubled flash without layout or firmware porting effort, while MKE15Z64VLH4 trades raw compute for lower BOM cost and static power - making the former ideal for scalable platforms and the latter for entry-level motion systems.
Availability
MKV31F256VLH12 is available at Aetrix Electronics and suitable for industrial motor drives, automotive HVAC subsystems, and robotics joint controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MKV31F256VLH12 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 markets, with deep expertise in real-time microcontrollers and power-efficient SoCs.
The Kinetis KV31F product line targets high-performance motor control applications, integrating precision analog, deterministic timers, and Arm Cortex-M4+FPU to replace discrete DSP + MCU combinations in servo and inverter designs.
FAQ
What is the maximum ADC sampling rate supported by MKV31F256VLH12?
MKV31F256VLH12 supports up to 1.2 million samples per second (MS/s) in 12-bit mode using either of its two 16-bit SAR ADCs. This rate is achievable with simultaneous sampling enabled and proper clock configuration (ADC clock ≤ 24 MHz). The dual-ADC architecture allows interleaved or synchronized acquisition across motor phases without CPU intervention.
Does MKV31F256VLH12 support hardware-based field-oriented control (FOC)?
MKV31F256VLH12 does not include a dedicated hardware FOC accelerator, but its Arm Cortex-M4 core with integrated FPU and DSP instructions executes FOC algorithms in under 1 µs per loop at 120 MHz. Combined with hardware quadrature decoders, PWM dead-time insertion, and ADC-triggered sampling, it delivers full software-based FOC with deterministic timing - validated in NXP's MOTORCONTROL_SW library.
What is the minimum supply voltage for flash programming on MKV31F256VLH12?
MKV31F256VLH12 requires a minimum VDD of 1.71 V for reliable flash write and erase operations across the full –40 to 105°C temperature range. Flash programming current peaks at ~25 mA, and the internal charge pump ensures consistent programming voltage regardless of supply droop - confirmed in Section 3.4.1 of the KV31P100M120SF8 datasheet.
How many independent PWM time bases does MKV31F256VLH12 provide?
MKV31F256VLH12 provides three independent timer time bases (FTM0, FTM1, FTM2), each supporting multiple PWM channels. This enables concurrent generation of gate drive signals, braking pulses, and auxiliary control waveforms with separate frequency and phase alignment - essential for multi-inverter topologies like 3-level NPC or dual-motor drives.
Is MKV31F256VLH12 pin-compatible with MKV31F256VLL12?
No, MKV31F256VLH12 (64-pin LQFP) is not pin-compatible with MKV31F256VLL12 (100-pin LQFP). They share identical peripheral functionality and register mapping, but differ in I/O count (46 vs. 70), package dimensions (10×10 mm vs. 14×14 mm), and pin assignments. Migration requires PCB redesign and signal reassignment per the respective pinout tables in the KV31P100M120SF8 datasheet.
MKV31F256VLH12 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-LQFP
- Series:
- Kinetis KV
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 120MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- DMA, PWM, WDT
- Number of I/O:
- 46
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 48K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 2x16b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MKV31F256VLH12 FAQ
1.How can I place an order for MKV31F256VLH12 through Aetrix?
Please submit a Request for Quotation (RFQ) for MKV31F256VLH12 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 MKV31F256VLH12 reliable?
The price and inventory of MKV31F256VLH12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MKV31F256VLH12 is usually 5 days.
3.What payment methods are accepted for MKV31F256VLH12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MKV31F256VLH12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MKV31F256VLH12?
MKV31F256VLH12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MKV31F256VLH12 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 MKV31F256VLH12?
For technical support, including MKV31F256VLH12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MKV31F256VLH12 requirements.
6.How does Aetrix verify that MKV31F256VLH12 is sourced from the original manufacturer or authorized distributors?
All MKV31F256VLH12 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 MKV31F256VLH12 meets industry standards.
7.What is the process for return or replacement of MKV31F256VLH12?
All MKV31F256VLH12 units undergo pre-shipment inspection (PSI). If there is an issue with MKV31F256VLH12, 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 MKV31F256VLH12 part is unused and in its original packaging.
Return procedure for MKV31F256VLH12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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