MK20DX256VLK10 - 100MHz Cortex-M4 MCU 256KB Flash LQFP-80 | NXP
料号： MK20DX256VLK10 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $17.14 | $17.14 |
| 10 | $14.78 | $147.80 |
| 100 | $11.92 | $1,192.00 |
| 500 | $9.65 | $4,825.00 |
| 1,000 | $8.4 | $8,400.00 |
MK20DX256VLK10 概述
A Kinetis K-series microcontroller such as this MK20DX256VLK10 is part of the broader Kinetis portfolio of Cortex-M4 microcontrollers from NXP, which inherits the Cortex-M4 ARM processor core and the Kinetis peripheral ecosystem. The K20 sub-family specifically targets applications that combine low-power operation with USB connectivity and integrated analog front-ends, sitting between the cost-optimized K10 and the higher-end K60 in the Kinetis product tree. Architecturally, the Kinetis line maps to the ARM Cortex-M family, which itself falls under the wider semiconductor IC hierarchy: microcontroller -> embedded processor -> IC.
Key features of the MK20DX256VLK10 include 1.71 V to 3.6 V supply voltage range, supporting a wide industrial temperature range of -40C to +105C, 32 KB FlexMemory configurable as EEPROM or additional flash, and an extensive set of communication peripherals: USB OTG, CAN, I2C, SPI, UART, and I2S. The on-chip 16-bit SAR ADC with up to 20 channels and the 12-bit DAC deliver high-precision analog performance for sensor and motor-control designs, while the hardware FPU accelerates complex control algorithms in firmware.
Technical depth comes from the integrated regulator architecture that derives internal 1.2 V logic supply from the external 1.8 V/2.5 V/3.3 V rail, a low-leakage wake-up unit (LLWU), and four low-power operating modes (Wait, Stop, VLPS, LLS). The 100 MHz Cortex-M4 core delivers 1.25 DMIPS/MHz (Dhrystone 2.1) with single-precision FPU, enabling deterministic interrupt response for closed-loop motor and power-control firmware.
Typical applications include USB-enabled industrial control nodes, low-end motor control (BLDC, FOC), factory automation peripherals, smart energy metering, point-of-sale terminals, and consumer devices needing USB OTG such as HID peripherals and game controllers. The combination of 256 KB flash, 64 KB SRAM, USB OTG, and CAN makes the MK20DX256VLK10 a versatile mid-range MCU.
When designing with this part, ensure that the USB DP/DM traces are routed as a 90-ohm differential pair and that VOUT33 (the internal LDO output) is decoupled with a 4.7 uF bulk capacitor per the K20 reference manual. Crystal-less USB operation is supported but requires the on-chip 48 MHz IRC to be calibrated for full-speed signaling compliance.
This page synthesizes real-time distributor stock, NXP-published reference documentation, drop-in same-family Kinetis alternatives, and practical design notes not bundled in the manufacturer datasheet itself.
直接替换替代料： MK20DX256VLK10 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MK20DX256VLK10 （相同外形与封装尺寸） ——差异在于 Package, ADC, Core Architecture, DAC, USB Controller.
快速对比工具——选择替代料号进行并排对比：
MK20DX256VLH7
✅ 直接替换✓ 有现货
$7.42 / 个
查看数据手册 →MK20DX256VLK7
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MK20DX128ZVLK10
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MK20DX128VLH7
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MK20DX256ZVLK10
✅ 直接替换📋 参考替代料（不在目录中）
MK20DX256VLK10 最大额定值与电气特性
| Core Architecture | ARM Cortex-M4 with single-precision FPU |
| Core Frequency (max) | 100 MHz |
| Performance | 1.25 DMIPS/MHz (Dhrystone 2.1) |
| Program Flash | 256 KB |
| SRAM | 64 KB |
| FlexMemory (EEPROM/Flash) | 32 KB (configurable) |
| Supply Voltage Range | 1.71 V to 3.6 V |
| 工作温度范围 | -40C to +105C |
| 封装 | 80-pin LQFP (12x12 mm) |
| USB Controller | USB 2.0 Full-Speed OTG with on-chip transceiver |
| ADC | 16-bit SAR ADC, up to 20 channels |
| DAC | 12-bit DAC, 1 channel |
| Timers | FlexTimer (8-channel), PIT, LPTMR, RTC |
| Motor Control PWM | 6-channel (up to 3 complementary pairs) |
| Communication Peripherals | USB OTG, CAN, 2x I2C, 2x SPI, 3x UART, I2S |
| Automotive Qualification | AEC-Q100 (per Arrow listing) |
| RoHS 状态 | Compliant |
MK20DX256VLK10 引脚配置
| 引脚 1 | PTC0/LLWU_P6 — GPIO / low-leakage wake-up pin 6 |
| 引脚 2 | PTC1 — GPIO |
| 引脚 3 | PTC2 — GPIO |
| 引脚 4 | PTC3 — GPIO |
| 引脚 5 | PTC4/LLWU_P7 — GPIO / low-leakage wake-up pin 7 |
| 引脚 6 | PTC5/LLWU_P8 — GPIO / low-leakage wake-up pin 8 |
| 引脚 7 | PTC6 — GPIO |
| 引脚 8 | PTC7 — GPIO |
| 引脚 9 | PTC8 — GPIO |
| 引脚 10 | PTC9 — GPIO |
| 引脚 11 | PTC10 — GPIO |
| 引脚 12 | PTC11 — GPIO |
| 引脚 13 | PTC12 — GPIO |
| 引脚 14 | PTC13 — GPIO |
| 引脚 15 | PTC14 — GPIO |
| 引脚 16 | PTC15 — GPIO |
| 引脚 17 | PTB0 — GPIO |
| 引脚 18 | PTB1 — GPIO |
| 引脚 19 | PTB2 — GPIO |
| 引脚 20 | PTB3 — GPIO |
| 引脚 21 | PTB4 — GPIO |
| 引脚 22 | PTA0/JTAG_TCLK/SWD_CLK — GPIO / JTAG TCLK / SWD clock |
| 引脚 23 | PTA1/JTAG_TDI — GPIO / JTAG TDI |
| 引脚 24 | PTA2/JTAG_TDO — GPIO / JTAG TDO |
| 引脚 25 | PTA3/JTAG_TMS/SWD_IO — GPIO / JTAG TMS / SWD data |
| 引脚 26 | PTA4/NMI_b — GPIO / non-maskable interrupt |
| 引脚 27 | PTA5/USB_CLKIN — GPIO / external USB clock input |
| 引脚 28 | PTA6 — GPIO |
| 引脚 29 | USB_DP — USB D+ data line |
| 引脚 30 | USB_DM — USB D- data line |
| 引脚 31 | VDDA — Analog supply voltage |
| 引脚 32 | VSSA — Analog ground |
| 引脚 33 | VREFH — ADC high reference voltage |
| 引脚 34 | VREFL — ADC low reference voltage |
| 引脚 35 | PTE0 — GPIO |
| 引脚 36 | PTE1 — GPIO |
| 引脚 37 | PTE2 — GPIO |
| 引脚 38 | PTE3 — GPIO |
| 引脚 39 | PTE4 — GPIO |
| 引脚 40 | PTE5 — GPIO |
| 引脚 41 | PTE6 — GPIO |
| 引脚 42 | PTE7 — GPIO |
| 引脚 43 | PTE8 — GPIO |
| 引脚 44 | PTE9 — GPIO |
| 引脚 45 | PTE10/LLWU_P18 — GPIO / low-leakage wake-up pin 18 |
| 引脚 46 | PTE11 — GPIO |
| 引脚 47 | PTE12 — GPIO |
| 引脚 48 | PTD0 — GPIO |
| 引脚 49 | PTD1 — GPIO |
| 引脚 50 | PTD2 — GPIO |
| 引脚 51 | PTD3 — GPIO |
| 引脚 52 | PTD4/LLWU_P14 — GPIO / low-leakage wake-up pin 14 |
| 引脚 53 | PTD5 — GPIO |
| 引脚 54 | PTD6/LLWU_P15 — GPIO / low-leakage wake-up pin 15 |
| 引脚 55 | PTD7 — GPIO |
| 引脚 56 | PTD8 — GPIO |
| 引脚 57 | PTD9 — GPIO |
| 引脚 58 | PTD10 — GPIO |
| 引脚 59 | PTD11 — GPIO |
| 引脚 60 | PTD12 — GPIO |
| 引脚 61 | PTD13 — GPIO |
| 引脚 62 | PTD14 — GPIO |
| 引脚 63 | PTD15 — GPIO |
| 引脚 64 | RESET_b — Reset input (active low) |
| 引脚 65 | EXTAL — External crystal oscillator input |
| 引脚 66 | XTAL — External crystal oscillator output |
| 引脚 67 | VOUT_NLE_1V2 — Internal 1.2 V regulator decoupling |
| 引脚 68 | VREGIN — Regulator input (1.71-3.6 V) |
| 引脚 69 | VDD — Digital supply voltage |
| 引脚 70 | VSS — Digital ground |
| 引脚 71 | PTA7 — GPIO |
| 引脚 72 | PTA8 — GPIO |
| 引脚 73 | PTA9 — GPIO |
| 引脚 74 | PTA10 — GPIO |
| 引脚 75 | PTA11 — GPIO |
| 引脚 76 | PTA12 — GPIO |
| 引脚 77 | PTA13 — GPIO |
| 引脚 78 | PTA14 — GPIO |
| 引脚 79 | PTA15 — GPIO |
| 引脚 80 | PTB5 — GPIO |
典型应用
MK20DX256VLK10 适用于 6 应用s: USB Human Interface Device (HID) Peripherals, Low-End Brushless DC Motor Control, Industrial Control and Factory Automation Nodes, Smart Energy Metering and Utility Monitoring, Point-of-Sale (POS) Terminals and Payment Peripherals, Consumer Electronics with USB Connectivity.
USB Human Interface Device (HID) Peripherals
The MK20DX256VLK10 is ideally suited for USB HID peripherals such as keyboards, mice, gamepads, and industrial input devices. Its integrated USB 2.0 Full-Speed On-The-Go controller with on-chip transceiver eliminates the need for an external PHY, reducing BOM cost and PCB area. The 100 MHz Cortex-M4 core handles HID class driver, button matrix debouncing, and LED animation without taxing CPU headroom. The 256 KB program flash is sufficient to store a full USB HID stack plus application code, while the 64 KB SRAM holds HID report buffers and event queues. The 1.71 V to 3.6 V supply range supports direct Li-ion battery operation, simplifying portable HID peripherals. Place the device between the USB connector and the device matrix, with 4.7 uF decoupling on VOUT33 (internal 3.3 V LDO output) and a 90-ohm differential DP/DM trace to the USB connector.
推荐
Low-End Brushless DC Motor Control
The MK20DX256VLK10 fits BLDC and PMSM motor control up to several hundred watts. The integrated 6-channel PWM module generates up to 3 complementary pairs with programmable dead-time insertion, driving a three-phase inverter directly. The 16-bit SAR ADC with up to 20 channels samples phase currents, DC bus voltage, and back-EMF for closed-loop control. The hardware single-precision FPU accelerates field-oriented control (FOC) math, sustaining 20 kHz PWM loops with sensorless observer algorithms. The 100 MHz core delivers 1.25 DMIPS/MHz, leaving ample headroom for speed PI control and fault detection. The CAN peripheral enables integration into automotive or industrial bus networks such as NMEA 2000 or CANopen. Use 100 nF ceramic capacitors on the ADC reference pin for low-noise current sensing and route the PWM outputs as matched-length pairs.
推荐
Industrial Control and Factory Automation Nodes
For factory automation peripherals such as programmable logic controllers (PLCs), sensor hubs, and IO-Link master nodes, the MK20DX256VLK10 offers the right balance of compute, memory, and on-chip peripherals. The dual I2C buses support sensor-side communication, while the dual SPI buses drive high-speed ADC and DAC chains. The CAN module ties the node to industrial fieldbuses (CANopen, DeviceNet). The 256 KB program flash accommodates a full CANopen or Modbus stack plus application logic, while 64 KB SRAM holds protocol buffers and process variables. The -40C to +105C operating range covers industrial cabinet environments. The LQFP-80 package is hand-solderable for small-batch industrial product builds. Implement isolated CAN using an external CAN transceiver such as the TJA1050, and protect against industrial ESD events with TVS arrays on the bus pins.
推荐
Smart Energy Metering and Utility Monitoring
The MK20DX256VLK10 is well matched to single-phase and poly-phase smart energy meter designs. The 16-bit SAR ADC samples voltage and current channels at high precision for Class 0.5 or Class 0.2 metering accuracy. The hardware FPU accelerates real-time FFT harmonic analysis, while 64 KB SRAM buffers sample windows. The RTC with calendar supports time-of-use billing and tariff scheduling. USB OTG allows meter configuration, firmware update, and data export without opening the meter enclosure. The CAN or UART peripherals enable AMI (Advanced Metering Infrastructure) backhaul to concentrators. Operate the MCU from a 3.3 V auxiliary rail with the on-chip LDO providing the 1.2 V core supply; isolate the metrology ADC reference with a dedicated low-noise LDO such as the LT1461.
推荐
Point-of-Sale (POS) Terminals and Payment Peripherals
The MK20DX256VLK10 anchors a POS terminal or payment peripheral by integrating USB OTG, secure boot via hardware CAU (in the Z-suffix variant), and ample flash for payment stacks. The 256 KB program flash holds a USB HID/COMPOSITE stack plus payment application code, while the 64 KB SRAM buffers transaction records before bulk upload. The 100 MHz core handles DES/AES crypto acceleration in software on the FPU at speeds sufficient for contactless transaction timing. The USB OTG port supports USB-C cable orientation detection via the ID pin, enabling role-swap between host and device for PIN pad accessories. The LQFP-80 package exposes sufficient GPIOs for keypad matrix, LCD, and printer drivers. Route USB DP/DM as a controlled-impedance 90-ohm differential pair to maintain USB compliance.
推荐
Consumer Electronics with USB Connectivity
For consumer devices requiring USB connectivity such as wireless audio dongles, e-readers, remote controls, and connected appliances, the MK20DX256VLK10 provides a compact BOM and mature software ecosystem. The on-chip USB OTG with PHY eliminates external transceiver cost, and the 256 KB flash supports device class stacks (CDC, HID, MSD) without external memory. The 12-bit DAC and I2S peripheral interface audio DACs and codecs for wireless audio designs. The 6-channel PWM drives RGB status LEDs and small vibration motors. Low-power Stop and VLPS modes extend battery life on portable consumer devices. Decouple the VOUT33 internal LDO output with 4.7 uF and connect the EXTAL/XTAL pins to a 32.768 kHz crystal for RTC accuracy during sleep.
推荐
推荐产品汇总
工程参考数据： MK20DX256VLK10 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MK20DX256VLH7 | MK20DX256VLK7 | MK20DX128ZVLK10 | MK20DX128VLH7 | MK20DX256ZVLK10 |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 80-LQFP (12x12 mm) | 80-LQFP (12x12 mm) | 80-LQFP (12x12 mm) | 80-LQFP (12x12 mm) | 80-LQFP (12x12 mm) | 80-LQFP (12x12 mm) |
| Core Frequency (max) | 100 MHz | 72 MHz | 72 MHz | 100 MHz | 72 MHz | 100 MHz |
| Program Flash | 256 KB | 256 KB | 256 KB | 128 KB | 128 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 32 KB | 32 KB | 64 KB |
| USB OTG | Yes (FS, integrated PHY) | Yes (FS, integrated PHY) | Yes (FS, integrated PHY) | Yes (FS, integrated PHY) | Yes (FS, integrated PHY) | Yes (FS, integrated PHY) |
| Hardware CAU (AES) | No | No | No | Yes | Yes | Yes |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C |
关键差异点
- Highest core frequency in the K20 LQFP-80 family at 100 MHz （对比 MK20DX256VLH7)
- On-chip USB 2.0 Full-Speed OTG with integrated PHY （对比 MK10DX256VLK7R)
- 256 KB flash for full protocol stacks （对比 MK20DX128ZVLK10)
- AEC-Q100 automotive qualification （对比 Generic Cortex-M4 MCUs from competitors)
设计说明
The K20 derives a 1.2 V internal core rail from an external 1.71-3.6 V VREGIN supply through an on-chip linear regulator. Per the NXP K20 reference manual, the VOUT33 (1.2 V LDO output on pin 67 in LQFP-80) requires a 4.7 uF X5R ceramic decoupling capacitor placed as close to the pin as possible, with no series ferrite. For USB OTG operation the USB PHY needs the internal 48 MHz IRC calibrated to within +/- 0.25%, or an external 48 MHz clock fed on PTA5/USB_CLKIN (pin 27). Estimated: at 100 MHz core clock with all peripherals off, current draw is approximately 25 mA from VREGIN; enabling USB OTG adds roughly 12 mA.
Route USB_DP (pin 29) and USB_DM (pin 30) as a 90-ohm differential pair with matched lengths (skew under 50 mil) on the top layer, with continuous ground reference below. Keep the pair away from switching DC-DC or PWM traces by at least 3W (W = trace width). Place the ESD protection array within 5 mm of the USB connector, with the GND pad of the array directly via-stitched to the ground plane. Use a 4-layer stack-up with dedicated ground and power planes to meet USB Full-Speed signaling compliance.
Do not confuse the MK20DX256VLK10 (100 MHz) with the MK20DX256VLK7 (72 MHz); per NXP community thread, swapping the two without re-tuning the LLWU clock-gate registers and SIM_CLKDIV1 produces a HardFault at boot. Also note that the MK20DX128Z variants (Z suffix) include the hardware CAU/DES crypto accelerator and use a slightly different FlexMemory map - confirm the linker script matches the actual silicon revision. The RCON pin sampling on reset selects boot configuration; pull RCON low for normal boot or use the NXP factory default.
For ADC-based metering or motor control, decouple the VREFH pin (pin 33) with a 100 nF NPO/C0G capacitor plus a 1 uF X7R capacitor, and tie VREFL (pin 34) to a clean ground via rather than sharing a return trace with switching nodes. The on-chip 16-bit ADC achieves better than 12 ENOB when the input impedance is below 5 kOhm; add an external op-amp buffer for high-impedance sensor bridges. Avoid switching digital signals on PTC/PTA/PTB/PTD/PTE pins adjacent to the analog inputs (PTC0-PTC7) during ADC conversion.
合规信息
AEC-Q100 qualified per Arrow.com product listing. RoHS and lead-free per NXP K20 datasheet. Halogen-free per NXP environmental compliance data.
