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NXP Semiconductors MK50DX256CLK7
- Part No.:
- MK50DX256CLK7
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
MK50DX256CLK7.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 80FQFP
- Quantity:
- Payment:
- Shipping:
Inventory:920
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Product details
Overview
MK50DX256CLK7 from NXP (formerly Freescale) is a 72 MHz ARM Cortex-M4 microcontroller with DSP extension, 256 KB program flash, 32 KB FlexNVM, 64 KB SRAM, and 2 KB FlexRAM configured as EEPROM. It features dual 16-bit ADCs (19+3 SE/DP and 16+3 SE/DP channels), three analog comparators, two op-amps, one 12-bit DAC, USB OTG LS/FS with device charger detect, six UARTs, three SPI modules, two I²C interfaces, and capacitive touch sensing - deployed in industrial HMI, smart metering, and portable medical devices.
For engineers reviewing the MK50DX256CLK7 datasheet, MK50DX256CLK7 pinout, MK50DX256CLK7 application, or MK50DX256CLK7 equivalent, key selection criteria include its 80-pin LQFP package, -40°C to +85°C temperature range, 1.71–3.6 V operation, FlexMemory configurability for bootloader + EEPROM, and full-speed USB OTG with integrated voltage regulator and DCD.
Technical Context
The MK50DX256CLK7 implements an ARM Cortex-M4 core with hardware DSP instructions but no FPU. Its memory subsystem integrates main program flash, FlexNVM (32 KB), and FlexRAM (2 KB), enabling simultaneous code execution and data storage with byte-write EEPROM emulation. The MCG clock system supports internal oscillators (1 kHz LP, 3–32 MHz, 32–40 kHz crystals) and PLL/FLL-based frequency synthesis up to 72 MHz.
Analog subsystem includes ADC0 (19 SE + 3 DP channels), ADC1 (16 SE + 3 DP), programmable gain amplifiers, transimpedance amplifiers, and comparator inputs routed across dedicated pins. Communication stack comprises USB OTG (LS/FS, on-chip transceiver, DCD, 120 mA regulator), six UARTs (one with ISO7816/IrDA), three SPIs (5/1/0 chip selects), two I²C, and I²S - all multiplexed onto GPIO with configurable digital glitch filters and 5 V tolerant inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M4 with DSP instructions, no FPU; delivers deterministic real-time control and signal processing at 72 MHz. |
| Flash Memory | 256 KB main program flash + 32 KB FlexNVM; enables concurrent firmware updates and data logging without halting execution. |
| SRAM / FlexRAM | 64 KB SRAM + 2 KB FlexRAM; FlexRAM serves as high-endurance EEPROM (10M cycles) with byte-write/erase capability. |
| Analog Peripherals | Dual 16-bit SAR ADCs (ADC0: 19 SE + 3 DP; ADC1: 16 SE + 3 DP), 3 analog comparators, 2 op-amps, 1 × 12-bit DAC, PGA, TRIAMP. |
| USB Interface | Full-Speed/Low-Speed USB OTG with on-chip transceiver, device charger detect (DCD), and integrated 120 mA voltage regulator. |
| Package & Temp | 80-pin LQFP (12 mm × 12 mm), -40°C to +85°C ambient operating range, 1.71–3.6 V supply voltage. |
| Debug & Trace | SWD/JTAG/cJTAG debug interfaces; TPIU, FPB, DWT, ITM trace support for real-time code analysis and profiling. |
Pinout & Package
Package: 80-pin LQFP (12 mm × 12 mm), RoHS-compliant, surface-mount, with exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA / VSSA | Analog power / ground | Separate analog domain supply pins; must be decoupled locally to ensure ADC/DAC accuracy and noise immunity. |
| PTA0–PTA31 | GPIO Port A | 32-bit general-purpose port with interrupt, DMA request, and digital glitch filter; 5 V tolerant on all pins. |
| PTB0–PTB17 | GPIO Port B | 18-bit general-purpose port; includes USB_DP/DM, UART0_TX/RX, SPI0_PCS0, and ADC0_SE0–SE15 signals. |
| PTC0–PTC15 | GPIO Port C | 16-bit port supporting ADC1_SE0–SE15, I²C0_SCL/SDA, SPI1_PCS0–PCS4, and TSI channels. |
| USB0_DP / USB0_DM | USB differential pair | Integrated full-speed/low-speed transceiver pins; require 27 Ω series resistors and 1.5 kΩ pull-up on DP for device mode. |
| RTC_CLKIN | Real-time clock input | Accepts external 32.768 kHz crystal or clock source for RTC operation during low-power modes (VBAT powered). |
Key Features
| Feature | Design Value |
|---|---|
| FlexMemory architecture | 32 KB FlexNVM + 2 KB FlexRAM enables field-upgradable bootloader storage and 10M-cycle EEPROM replacement without external ICs. |
| Dual high-resolution ADCs | ADC0 (19 SE + 3 DP) and ADC1 (16 SE + 3 DP) support simultaneous sampling and hardware averaging for precision sensor acquisition. |
| USB OTG with DCD | On-chip USB transceiver with device charger detect allows automatic identification of wall adapters vs. PCs - critical for battery-powered host negotiation. |
| Low-power operation | 10 power modes including VLPR/VLPS/LLS; low-leakage wake-up unit and 1 kHz LP oscillator enable µA-level sleep current with fast wake-up. |
| Capacitive touch interface | 16-channel TSI module with hardware charge/discharge timing and low-power support - enables touch buttons/sliders with <1 µA active current. |
Applications
| Industrial HMI Panel | Smart Electricity Meter |
|---|---|
Use Scenario: Standalone panel with LCD display, tactile buttons, and serial communication to PLC or gateway. IC Role / Device Role / Timing Role: Main controller executing UI logic, driving segment LCD via GPIO-mapped segments, sampling touch inputs, and managing RS-485/UART comms. Use Value: Integrated segment LCD drive capability (via GPIO remapping), 16-channel TSI, and 5 V tolerant GPIO simplify front-panel design and eliminate level-shifters. | Use Scenario: Revenue-grade meter with energy measurement, tamper detection, and remote firmware update over PLC or RF link. IC Role / Device Role / Timing Role: System-on-chip managing metrology ADC interface (external), secure firmware updates, RTC-backed billing logs, and encrypted communication stacks. Use Value: FlexRAM provides secure, high-endurance storage for calibration constants and tamper event logs; USB DCD enables safe field update via service tool. |
| Portable Medical Sensor | Building Automation Node |
Use Scenario: Battery-powered wearable measuring ECG, temperature, and motion using analog front-end and BLE bridge. IC Role / Device Role / Timing Role: Signal conditioner and aggregator - digitizing analog biosignals, filtering, timestamping, and buffering before BLE transmission. Use Value: Dual 16-bit ADCs with PGA support low-noise biopotential acquisition; ultra-low-power modes extend battery life beyond 7 days on coin cell. | Use Scenario: HVAC zone controller with temperature/humidity sensors, relay drivers, and Modbus RTU communication to BMS. IC Role / Device Role / Timing Role: Real-time environmental monitor and actuator coordinator - reading sensors, computing PID loops, and driving relays or PWM fans. Use Value: FTM timers support precise PWM fan control; six UARTs allow native Modbus RTU + debug + sensor interface without multiplexing bottlenecks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MK51DX256CLK7 | Same 80-pin LQFP, 72 MHz, 256 KB flash, 32 KB FlexNVM, but adds segment LCD controller (24×8/28×4) and second I²C interface. | Required where integrated segment LCD drive is needed; not suitable if LCD is handled externally or by another controller. | Select MK51DX256CLK7 only when segment LCD support is mandatory; otherwise MK50DX256CLK7 offers identical core/peripheral set at lower cost. |
| MK50DN256CLK7 | Same package and speed, but replaces FlexMemory with 256 KB program flash only (no FlexNVM/FlexRAM); lacks USB DCD and 120 mA regulator. | Suitable for cost-sensitive designs without USB device charging detection or EEPROM emulation needs. | Choose MK50DN256CLK7 only if USB DCD and FlexRAM-based EEPROM are unnecessary; MK50DX256CLK7 retains full feature set for future-proofing. |
Compared with MK51DX256CLK7, MK50DX256CLK7 omits segment LCD hardware but matches all analog, timer, and communication capabilities - making it optimal for non-LCD applications. Against MK50DN256CLK7, it adds FlexMemory and USB DCD, enabling robust field updates and charger-aware USB connectivity.
Availability
MK50DX256CLK7 is available at Aetrix Electronics and suitable for industrial HMI, smart metering, and portable medical sensor designs requiring stable component supply, long-term lifecycle support, and consistent qualification status (fully qualified M-series flow).
Supply support for MK50DX256CLK7 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, and IoT markets.
The Kinetis K50 family was designed for low-power, mixed-signal applications demanding USB connectivity, high-precision analog acquisition, and flexible memory architecture - targeting industrial control, energy metering, and portable instrumentation.
FAQ
What is the maximum CPU frequency and core type of the MK50DX256CLK7?
The MK50DX256CLK7 operates at a maximum CPU frequency of 72 MHz and uses an ARM Cortex-M4 core with hardware DSP instruction support. It does not include a floating-point unit (FPU). This configuration balances computational throughput for signal processing tasks - such as sensor fusion or motor control algorithms - with deterministic real-time response and low power consumption, making the MK50DX256CLK7 well-suited for embedded applications where both efficiency and precision matter.
Does the MK50DX256CLK7 support USB device charger detection (DCD)?
Yes, the MK50DX256CLK7 includes full USB On-The-Go (OTG) functionality with integrated device charger detection (DCD). This feature allows the MK50DX256CLK7 to distinguish between standard USB hosts (e.g., PCs) and dedicated charging ports (e.g., wall adapters) by detecting the presence and resistance of D+–D− connections. Combined with its on-chip 120 mA USB voltage regulator, this enables reliable battery charging negotiation in portable devices without external circuitry.
How is FlexMemory configured on the MK50DX256CLK7?
The MK50DX256CLK7 includes 32 KB of FlexNVM and 2 KB of FlexRAM. FlexRAM is factory-configured as 2 KB of high-endurance EEPROM (10 million write/erase cycles), while FlexNVM can be partitioned to extend program flash (e.g., for bootloader storage) or serve as data flash. This eliminates the need for external EEPROM and simplifies firmware update architectures - a key advantage of the MK50DX256CLK7 in field-deployed systems requiring secure, durable parameter storage.
What analog peripherals are integrated into the MK50DX256CLK7?
The MK50DX256CLK7 integrates dual 16-bit SAR ADCs (ADC0: 19 single-ended + 3 differential; ADC1: 16 single-ended + 3 differential), three analog comparators, two operational amplifiers, one 12-bit DAC, two programmable gain amplifiers (PGA), and one transimpedance amplifier (TRIAMP). These peripherals support precision sensor interfacing, closed-loop control, and signal conditioning - enabling the MK50DX256CLK7 to replace multiple discrete analog components in compact, cost-sensitive designs.
Is the MK50DX256CLK7 pin-compatible with other K50 family members in the same package?
Yes, all K50 family devices sharing the 80-pin LQFP package - including MK50DX128CLK7, MK50DX256CLK7, MK51DX128CLK7, and MK51DX256CLK7 - are pin-for-pin compatible. This allows seamless migration between memory/configurations without PCB redesign. However, peripheral enablement (e.g., second I²C on MK51 variants or segment LCD signals) depends on software configuration and may require pinmux adjustments - confirming that MK50DX256CLK7 maintains full hardware compatibility within its package group.
MK50DX256CLK7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-LQFP
- Series:
- Kinetis K50
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 72MHz
- Connectivity:
- EBI/EMI, I2C, IrDA, SPI, UART/USART, USB, USB OTG
- Peripherals:
- DMA, I2S, LVD, POR, PWM, WDT
- Number of I/O:
- 39
- 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 30x16b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MK50DX256CLK7 FAQ
1.How can I place an order for MK50DX256CLK7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MK50DX256CLK7 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 MK50DX256CLK7 reliable?
The price and inventory of MK50DX256CLK7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MK50DX256CLK7 is usually 5 days.
3.What payment methods are accepted for MK50DX256CLK7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MK50DX256CLK7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MK50DX256CLK7?
MK50DX256CLK7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MK50DX256CLK7 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 MK50DX256CLK7?
For technical support, including MK50DX256CLK7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MK50DX256CLK7 requirements.
6.How does Aetrix verify that MK50DX256CLK7 is sourced from the original manufacturer or authorized distributors?
All MK50DX256CLK7 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 MK50DX256CLK7 meets industry standards.
7.What is the process for return or replacement of MK50DX256CLK7?
All MK50DX256CLK7 units undergo pre-shipment inspection (PSI). If there is an issue with MK50DX256CLK7, 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 MK50DX256CLK7 part is unused and in its original packaging.
Return procedure for MK50DX256CLK7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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