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NXP Semiconductors MK20DX256VMC7R
- Part No.:
- MK20DX256VMC7R
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 121-LFBGA
- Datasheet:
-
MK20DX256VMC7R.pdf
- Description:
- IC MCU 32B 256KB FLASH 121MAPBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,619
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Product details
Overview
MK20DX256VMC7R from NXP Semiconductors (formerly Freescale) is a 32-bit ARM Cortex-M4 microcontroller with DSP extensions, designed for embedded control applications requiring real-time signal processing, low-power operation, and integrated analog peripherals. It features 256 KB on-chip flash, 64 KB RAM, operates from 1.71–3.6 V, supports –40 to 105°C ambient temperature, and integrates USB OTG, CAN, dual 16-bit ADCs with PGA, 12-bit DAC, and eight-channel PWM timer - deployed in industrial motor control systems.
For engineers reviewing the MK20DX256VMC7R datasheet, MK20DX256VMC7R pinout, MK20DX256VMC7R application, or MK20DX256VMC7R equivalent, key selection considerations include its 72 MHz max CPU frequency, 121-pin MAPBGA package (8 mm × 8 mm), VLLS3 stop-mode current of 1.9–41.9 µA, dual ADC sampling rate up to 1 MSPS, and FlexCAN module compliance with ISO 11898-1.
Technical Context
The MK20DX256VMC7R implements an ARM Cortex-M4 core with hardware floating-point unit (FPU) and DSP instructions, paired with a multi-purpose clock generator supporting crystal oscillators at 3–32 MHz and 32 kHz. Its memory subsystem includes 256 KB program flash with FlexMemory partitioning capability and 64 KB SRAM with parity protection.
Peripherals are organized around a high-speed AHB bus matrix and APB bridges: two 16-bit SAR ADCs each with integrated PGA (gain up to ×64), three analog comparators with 6-bit DACs, eight-channel motor-control/PWM timer (TPM), two quadrature decoder timers, USB full-/low-speed OTG controller with on-chip transceiver, and FlexCAN supporting CAN 2.0A/B protocols.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4 with FPU and DSP extensions - enables real-time filtering, FFT, and sensor fusion without external co-processor |
| Max Clock Frequency | 72 MHz - supports deterministic execution of control loops with ≤13.9 ns instruction cycle time |
| Flash / RAM | 256 KB flash / 64 KB SRAM - sufficient for bootloader + application + OTA update staging in industrial firmware |
| ADC Resolution & Count | Dual 16-bit SAR ADCs - provides high-precision current/voltage sensing in motor drives with simultaneous sampling |
| Operating Voltage | 1.71–3.6 V - compatible with single Li-ion, 3.3 V logic rails, and wide-input DC-DC converters |
| Temperature Range | –40 to 105°C - qualified for under-hood automotive and industrial enclosure environments |
| USB Interface | Full-/low-speed USB OTG with on-chip transceiver - eliminates external PHY, reduces BOM cost and PCB area |
| Package | 121-pin MAPBGA (8 mm × 8 mm, 0.5 mm pitch) - balances I/O density, thermal performance, and reflow manufacturability |
Pinout & Package
MK20DX256VMC7R uses a 121-pin MAPBGA package (MC suffix), 8 mm × 8 mm body, 0.5 mm ball pitch, RoHS-compliant, moisture sensitivity level 3. Pin assignments follow K20 Sub-Family multiplexing scheme with dedicated JTAG/SWD debug, USB DP/DM, CAN_H/CAN_L, ADC inputs, and flexible GPIO mapping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD/VSS (multiple) | Core & I/O power supply / ground | Separate analog/digital domains (VDDA/VSSA) enable noise isolation for precision ADC/DAC operation |
| PTA0–PTA31, PTB0–PTB16, etc. | General-purpose I/O with mux options | Each port supports interrupt-on-change, glitch filtering, and configurable slew rate/drive strength for EMI control |
| USB_DP / USB_DM | USB differential data pair | Integrated transceiver supports full-speed (12 Mbps) and low-speed (1.5 Mbps); no external termination required |
| CAN_H / CAN_L | Controller Area Network bus interface | Direct connection to isolated CAN transceiver; supports bit rates up to 1 Mbps per ISO 11898-1 |
| ADC0_SE0–ADC0_SE15, ADC1_SE0–ADC1_SE15 | Analog input channels | Two independent 16-bit ADCs with programmable gain amplifier (×1 to ×64) for direct connection to shunt resistors or sensors |
| TPM0_CH0–TPM0_CH7 | PWM output / capture input | Eight-channel timer supports complementary PWM with dead-time insertion - essential for 3-phase inverter gate drive |
| JTAG_TMS / TCK / TDO / TDI / SWD_DIO / SWD_CLK | Debug interface | SWD mode uses only two pins; JTAG available for boundary scan; both support flash programming and real-time trace |
Key Features
| Feature | Design Value |
|---|---|
| Low-power modes (VLLS1–VLLS3, LLS, VLPS) | VLLS3 stop-mode current as low as 1.9 µA @ –40°C enables battery-backed RTC and wake-on-external-event in portable equipment |
| Hardware CRC module | Accelerates checksum calculation for firmware integrity verification and communication frame validation - offloads CPU during boot and CAN message handling |
| 128-bit unique chip ID | Enables secure device authentication and license binding without external EEPROM or security IC |
| TSI (Touch Sensing Interface) | Capacitive touch sensing with low-power wakeup - supports up to 16 electrodes with <1 µA active current, eliminating mechanical buttons |
| Programmable gain amplifier (PGA) | Integrated into each ADC path with gains ×1, ×2, ×4, ×8, ×16, ×32, ×64 - eliminates external op-amp stages for microvolt-level sensor signals |
| FlexCAN with FIFO and mailboxes | 16-message RX FIFO and 16 transmit mailboxes reduce CPU overhead in high-bandwidth CAN networks (e.g., automotive body control) |
Applications
| Industrial Motor Control | Automotive Body Electronics |
|---|---|
Use Scenario: Closed-loop control of BLDC/PMSM motors in HVAC blowers, pumps, and power tools. IC Role / Device Role / Timing Role: Real-time execution of FOC (field-oriented control) algorithm, PWM generation with <100 ns dead-time accuracy, and ADC sampling synchronized to switching edges. Use Value: Dual 16-bit ADCs with PGA allow direct current sensing across shunt resistors; 72 MHz core ensures sub-µs loop timing for 20 kHz PWM carrier frequencies. |
Use Scenario: Central body controller managing door locks, lighting, window lifts, and mirror adjustment via CAN network. IC Role / Device Role / Timing Role: CAN protocol handler, GPIO expander, and LIN gateway; RTC maintains time across ignition cycles. Use Value: Integrated FlexCAN supports 500 kbps+ bit rates with automatic retransmission; 105°C rating ensures reliability in dashboard-mounted modules. |
| Medical Infusion Pumps | Smart Energy Meters |
Use Scenario: Precision fluid delivery with pressure monitoring, motor control, and USB-based calibration/data export. IC Role / Device Role / Timing Role: Safety-critical controller with watchdog supervision, CRC-protected flash, and analog front-end for load cell and flow sensor conditioning. Use Value: Hardware CRC module validates firmware updates; 12-bit DAC generates precise reference voltages for analog sensor excitation. |
Use Scenario: Polyphase electricity meter with metrology, tamper detection, and HPLC/RF communication stack. IC Role / Device Role / Timing Role: Metrology co-processor interfacing with external ADCs, managing secure firmware updates over PLC, and maintaining accurate time-of-use billing. Use Value: Low-leakage wakeup unit enables periodic sampling during deep sleep; 32 kHz RTC oscillator maintains ±5 ppm accuracy over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MKE15Z256VLH7 | ARM Cortex-M0+, 256 KB flash, 64 KB RAM, 72 MHz, but lacks USB OTG and FlexCAN; includes SGPIO for smart card interface | Suitable for cost-sensitive, non-automotive applications where CAN/USB are not required - e.g., basic industrial I/O modules | Select when USB/automotive CAN are unnecessary and lower core complexity suffices for deterministic control tasks |
| MIMXRT1021DAG4A | ARM Cortex-M7, 500 MHz, 256 KB SRAM, no on-chip flash; requires external QSPI flash; includes Ethernet, SEMC, and advanced security | Targeted at high-throughput edge AI inference or GUI-driven HMI - not drop-in replacement due to architecture, power, and peripheral mismatch | Choose only when >100 DMIPS performance, Ethernet, or external memory expansion are mandatory; requires full hardware redesign |
Compared with MK20DX256VMC7R, MKE15Z256VLH7 offers lower cost and power but sacrifices USB and CAN connectivity, while MIMXRT1021DAG4A delivers significantly higher compute throughput at the expense of increased power, board complexity, and loss of integrated flash - making MK20DX256VMC7R optimal for balanced real-time control with mixed-signal integration.
Availability
MK20DX256VMC7R is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, medical infusion pumps, and smart energy metering requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across temperature extremes.
Supply support for MK20DX256VMC7R 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, IoT, and mobile applications, with roots in Freescale's Kinetis portfolio.
The MK20DX256VMC7R belongs to the Kinetis K20 family - engineered for cost-effective, low-power embedded control with integrated analog, communication, and safety features targeting industrial automation and automotive subsystems.
FAQ
What is the maximum operating frequency of the MK20DX256VMC7R?
The MK20DX256VMC7R operates at a maximum CPU frequency of 72 MHz, achieved using the internal MCG clock generator in FEE mode with an external 8–32 MHz crystal. This frequency is validated across the full –40 to 105°C temperature range and 1.71–3.6 V supply voltage, enabling deterministic execution of real-time control algorithms in MK20DX256VMC7R-based systems.
Does the MK20DX256VMC7R support USB device mode without an external transceiver?
Yes, the MK20DX256VMC7R integrates a full-/low-speed USB OTG controller with an on-chip transceiver. Its USB_DP and USB_DM pins connect directly to the USB connector without external PHY components, reducing bill-of-materials cost and PCB footprint - a verified capability documented in the K20 Sub-Family Data Sheet Rev. 3 for MK20DX256VMC7R.
What low-power modes are available on the MK20DX256VMC7R, and what is the lowest achievable current draw?
The MK20DX256VMC7R supports multiple low-power modes including VLPR, VLPS, LLS, and VLLS1–VLLS3. In VLLS3 mode with RTC enabled and all clocks stopped, it achieves 1.9 µA typical current at –40°C and 41.9 µA maximum at 105°C - confirmed in Table 6 of the K20 Sub-Family Data Sheet for MK20DX256VMC7R.
Is the MK20DX256VMC7R pin-compatible with other K20 family members like MK20DX128VMC7?
No, MK20DX256VMC7R is not pin-compatible with MK20DX128VMC7 despite sharing the same MC package. Differences in peripheral mapping, power domain routing, and internal flash/RAM configuration require distinct PCB layouts - verified by comparing pin assignment tables in the K20 Sub-Family Data Sheet for each specific orderable part number.
What analog peripherals are integrated into the MK20DX256VMC7R?
The MK20DX256VMC7R integrates two independent 16-bit SAR ADCs (each with PGA up to ×64), a 12-bit DAC, three analog comparators (each with integrated 6-bit DAC and programmable reference), and a precision voltage reference module - all specified and tested for MK20DX256VMC7R in Sections 6.6.1–6.6.4 of the K20 Sub-Family Data Sheet.
MK20DX256VMC7R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 121-LFBGA
- Series:
- Kinetis K20
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 72MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, IrDA, SPI, UART/USART, USB, USB OTG
- Peripherals:
- DMA, I2S, LVD, POR, PWM, WDT
- Number of I/O:
- 70
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 64K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 35x16b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MK20DX256VMC7R FAQ
1.How can I place an order for MK20DX256VMC7R through Aetrix?
Please submit a Request for Quotation (RFQ) for MK20DX256VMC7R 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 MK20DX256VMC7R reliable?
The price and inventory of MK20DX256VMC7R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MK20DX256VMC7R is usually 5 days.
3.What payment methods are accepted for MK20DX256VMC7R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MK20DX256VMC7R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MK20DX256VMC7R?
MK20DX256VMC7R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MK20DX256VMC7R 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 MK20DX256VMC7R?
For technical support, including MK20DX256VMC7R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MK20DX256VMC7R requirements.
6.How does Aetrix verify that MK20DX256VMC7R is sourced from the original manufacturer or authorized distributors?
All MK20DX256VMC7R 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 MK20DX256VMC7R meets industry standards.
7.What is the process for return or replacement of MK20DX256VMC7R?
All MK20DX256VMC7R units undergo pre-shipment inspection (PSI). If there is an issue with MK20DX256VMC7R, 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 MK20DX256VMC7R part is unused and in its original packaging.
Return procedure for MK20DX256VMC7R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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