MK20DX128VFT5 - Kinetis K20 50MHz Cortex-M4 MCU 128KB | NXP
料号： MK20DX128VFT5 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.92 | $6.92 |
| 10 | $6.18 | $61.80 |
| 100 | $5.32 | $532.00 |
| 500 | $4.78 | $2,390.00 |
| 1,000 | $4.25 | $4,250.00 |
MK20DX128VFT5 概述
What is a Kinetis K20 microcontroller? The K20 sub-family belongs to NXP's Kinetis lineup of low-power ARM Cortex-M4 microcontrollers targeted at USB connectivity, segment LCD displays, and mixed-signal industrial/consumer designs. Kinetis K20 sits under the broader ARM Cortex-M4 family and the wider Kinetis portfolio (K10/K20/K30/K40/K50/K60), which itself falls under the 32-bit MCU category and the broader integrated-circuit hierarchy of microcontrollers -> embedded processors -> semiconductors.
Key features of the MK20DX128VFT5 include a Cortex-M4 core with single-precision FPU and DSP instructions, Full-Speed USB OTG with on-chip transceiver and Device Charge Detect (USB Charger Detection), 16-bit SAR ADC, 12-bit DAC, programmable gain amplifiers, low-power touch-sensing interface, and a flexible low-power segment-LCD controller (up to 8x36 segments). Hardware cryptographic accelerators and a true random number generator support secure applications, while a 6-bit FlexMemory and 128 KB flash support in-application programming and EEPROM emulation.
The architecture uses a multi-layer AHB-Lite bus matrix with DMA channels, a Cortex-M4 core capable of 1.25 DMIPS/MHz, and integrated voltage regulation for low-power modes. The USB 2.0 Full-Speed OTG controller with on-chip HS PHY (via external transceiver interface) and pull-up/-down resistors simplifies BOM while supporting battery-charging detection per USB BC1.2, reducing external component count in USB peripherals.
Typical applications of this part include USB peripherals (keyboards, mice, barcode scanners, MIDI controllers), segment-LCD human-machine interfaces for industrial equipment, low-power consumer devices with touch sensing, and secure IoT endpoints benefiting from the hardware crypto engine. The K20's combination of USB OTG, segment LCD, and rich analog makes it well suited for handheld instrumentation and medical devices.
When designing with the MK20DX128VFT5, ensure the exposed pad is soldered to a sufficient copper pour for thermal dissipation; the QFN-EP package relies on this pad for both thermal and electrical ground. USB DP/DM trace routing must follow 90-ohm differential impedance and length matching per USB 2.0 specifications.
This page synthesizes distributor pricing, drop-in Kinetis alternatives, and practical design notes not found in the manufacturer datasheet alone, presenting verified data points for engineers selecting a USB-enabled Cortex-M4 MCU.
直接替换替代料： MK20DX128VFT5 ——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： MK20DX128VFT5 （相同外形与封装尺寸） ——差异在于 Connectivity, Package, Program Memory Size.
快速对比工具——选择替代料号进行并排对比：
MK20DX128VFM5
✅ 直接替换📋 参考替代料（不在目录中）
MK20DX256VFT5
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MK20DN128VFT5
✅ 直接替换📋 参考替代料（不在目录中）
MK10DX128VFT5
✅ 直接替换📋 参考替代料（不在目录中）
MK20DX128VFT5 最大额定值与电气特性
| Core Architecture | ARM Cortex-M4 |
| Core Bit Width | 32-bit |
| 最大时钟频率 | 50 MHz |
| Program Memory Size | 128 KB (128K x 8) Flash |
| RAM Size | 16 KB |
| Supply Voltage Range | 1.71 V to 3.6 V |
| Package Type | 48-VFQFN Exposed Pad (QFN-EP) |
| Package Dimensions | 7 x 7 mm |
| 安装类型 | Surface Mount |
| 工作温度 | -40°C to +105°C |
| USB Interface | USB 2.0 Full-Speed OTG, Device Charge Detect |
| ADC | 16-bit SAR ADC |
| DAC | 12-bit DAC |
| Segment LCD | Up to 8 x 36 segments |
| Hardware Cryptography | AES, TRNG (true random number generator) |
| FlexMemory | 6-bit FlexMemory (EEPROM emulation) |
| FPU | Yes (single-precision) |
| DSP Instructions | Yes |
| RoHS 状态 | Compliant |
MK20DX128VFT5 引脚配置
| 引脚 1 | VDD — Digital supply voltage |
| 引脚 2 | VSS — Digital ground |
| 引脚 3 | USB0_DP — USB Data Plus (differential) |
| 引脚 4 | USB0_DM — USB Data Minus (differential) |
| 引脚 5 | VOUT33 — USB transceiver 3.3V regulator output |
| 引脚 6 | VREGIN — USB voltage regulator input (5V tolerant) |
| 引脚 7 | PTA0 — General-purpose I/O / TSI channel |
| 引脚 8 | PTA1 — General-purpose I/O / TSI channel |
| 引脚 9 | PTA2 — General-purpose I/O / UART0 TX |
| 引脚 10 | PTA3 — General-purpose I/O / UART0 RX |
| 引脚 11 | PTA4 — General-purpose I/O |
| 引脚 12 | PTA5 — General-purpose I/O |
| 引脚 13 | PTA6 — General-purpose I/O |
| 引脚 14 | PTA7 — General-purpose I/O |
| 引脚 15 | PTB0 — General-purpose I/O / ADC0 channel |
| 引脚 16 | PTB1 — General-purpose I/O / ADC0 channel |
| 引脚 17 | PTB2 — General-purpose I/O / ADC0 channel |
| 引脚 18 | PTB3 — General-purpose I/O / ADC0 channel |
| 引脚 19 | PTB4 — General-purpose I/O |
| 引脚 20 | PTB5 — General-purpose I/O |
| 引脚 21 | PTB6 — General-purpose I/O |
| 引脚 22 | PTB7 — General-purpose I/O |
| 引脚 23 | PTC0 — General-purpose I/O / LCD segment |
| 引脚 24 | PTC1 — General-purpose I/O / LCD segment |
| 引脚 25 | PTC2 — General-purpose I/O / LCD segment |
| 引脚 26 | PTC3 — General-purpose I/O / LCD segment |
| 引脚 27 | PTC4 — General-purpose I/O / LCD segment |
| 引脚 28 | PTC5 — General-purpose I/O / LCD segment |
| 引脚 29 | PTC6 — General-purpose I/O / LCD segment |
| 引脚 30 | PTC7 — General-purpose I/O / LCD segment |
| 引脚 31 | PTD0 — General-purpose I/O |
| 引脚 32 | PTD1 — General-purpose I/O |
| 引脚 33 | PTD2 — General-purpose I/O |
| 引脚 34 | PTD3 — General-purpose I/O |
| 引脚 35 | PTD4 — General-purpose I/O |
| 引脚 36 | PTD5 — General-purpose I/O |
| 引脚 37 | PTD6 — General-purpose I/O |
| 引脚 38 | PTD7 — General-purpose I/O |
| 引脚 39 | PTE0 — General-purpose I/O / LCD COM |
| 引脚 40 | PTE1 — General-purpose I/O / LCD COM |
| 引脚 41 | PTE2 — General-purpose I/O / LCD COM |
| 引脚 42 | PTE3 — General-purpose I/O / LCD COM |
| 引脚 43 | PTE4 — General-purpose I/O |
| 引脚 44 | PTE5 — General-purpose I/O |
| 引脚 45 | PTE6 — General-purpose I/O |
| 引脚 46 | PTE7 — General-purpose I/O |
| 引脚 47 | RESET — Active-low reset input |
| 引脚 48 | EXTAL — External crystal/clock input |
典型应用
MK20DX128VFT5 适用于 6 应用s: USB HID Peripherals, Segment LCD Human-Machine Interface, Low-Power IoT Sensor Nodes, Industrial Equipment Controllers, Medical and Consumer Devices, Touch-Sensing User Interfaces.
USB HID Peripherals
The MK20DX128VFT5 is engineered for USB Human Interface Devices such as keyboards, mice, barcode scanners, and MIDI controllers. The integrated USB 2.0 Full-Speed OTG controller with on-chip transceiver and pull-up/pull-down resistors eliminates external USB PHY, while Device Charge Detect (USB BC1.2) allows the device to negotiate higher current from upstream chargers. With 128 KB flash and 16 KB SRAM, the Cortex-M4 can host HID descriptors, USB stacks (NXP's Freescale USB Stack, TinyUSB, or Mbed OS), and application logic; the hardware AES engine secures data payloads in keyboard/mouse authentication. A 50 MHz core runs USB polling at 1 kHz with plenty of headroom for scan matrices and key debouncing. Placed near the USB connector with 90-ohm differential trace routing for DP/DM, the part becomes a full BOM-reducing USB peripheral MCU.
推荐
Segment LCD Human-Machine Interface
The MK20DX128VFT5's integrated segment-LCD controller (up to 8 x 36 segments) drives TN/STN reflective LCD glass directly with charge-pump bias generation, removing the need for external LCD drivers. Industrial control panels, electronic shelf labels, weighing scales, and metering equipment benefit from this direct-drive capability because BOM cost drops when external drivers and DC-DC converters are eliminated. The 50 MHz Cortex-M4 with FPU executes font-rendering, debouncing, and menu logic while the LCD controller handles multiplexing. Low-power modes (VLLS, LLS) keep the display alive while consuming microamps, ideal for battery-powered meters. Plan the PCB segment-LCD traces with careful routing guidelines (avoid crossing, balance capacitances) and connect the LCD_VPIN1 pins through bias resistors per the NXP K20 reference manual.
推荐
Low-Power IoT Sensor Nodes
The MK20DX128VFT5 fits battery-powered IoT sensor endpoints that send telemetry over USB or low-power wireless companions. Multiple low-power modes (Run, Wait, Stop, VLPR, VLPS, LLS, VLLS) combined with Freescale's smart peripheral gating and DMA wake-ups allow quiescent currents in the microamp range, while the 50 MHz wake-up completes sensor acquisition in single-digit milliseconds. The 16-bit SAR ADC plus 12-bit DAC and programmable gain amplifiers handle RTD, thermocouple, or strain-gauge conditioning without external analog front ends. The hardware AES-128/192/256 accelerator and TRNG satisfy secure-element requirements for authenticated firmware updates. Pair this part with an external sub-GHz or BLE module via UART/SPI for an end-to-end wireless sensor node; NXP's KSDK and Processor Expert simplify firmware build.
推荐
Industrial Equipment Controllers
The MK20DX128VFT5 -40°C to +105°C industrial temperature rating plus its robust peripheral mix (CAN, SPI, I2C, UART, ADC) makes it suitable for industrial programmable logic controllers (PLCs), motor-control auxiliary boards, and process-control instrumentation. The Cortex-M4 FPU executes PID loops, inverse Park transforms, and DSP filtering without compromising jitter; the 12-bit DAC outputs control voltages while the PWM modules drive motor pre-drivers. The on-chip segment LCD drives alphanumeric panel displays; USB OTG enables field-service firmware upgrades from a laptop. The hardware crypto engine secures authentication between controllers and external management systems. Place the part on a 4-layer PCB with adequate thermal relief for the exposed pad; use a 1 µF + 100 nF decoupling pair on VREG_IN and VDD for stable regulator operation across temperature.
推荐
Medical and Consumer Devices
Portable medical devices such as glucose meters, pulse oximeters, smart inhalers, and digital thermometers benefit from the MK20DX128VFT5's low-power operation, integrated segment LCD, and USB data transfer. The 16-bit SAR ADC captures physiological signals at adequate resolution for SpO2 and ECG front-end sampling; the 12-bit DAC drives I-V converters for sensor excitation. USB device-class support enables CDC (communications) and DFU (firmware-update) modes used by medical OEMs for compliance with IEC 62304 firmware-update workflows. The hardware AES ensures patient-data encryption at rest; the TRNG generates nonces for cryptographic protocols. Battery-powered designs benefit from VLLSO mode cutting quiescent current below 1 µA, extending shelf life on coin cells.
推荐
Touch-Sensing User Interfaces
The MK20DX128VFT5 supports NXP's TSI (Touch-Sensing Input) peripheral that measures capacitance changes on human-touch electrodes without external touch controllers. White-goods, automotive interior panels, and consumer appliances deploy TSI for keypad, slider, and rotary control replacement. TSI operates in low-power stop modes, allowing a battery-powered device to wake on touch with sub-microsecond latency. The 16-bit ADC provides analog complement for proximity/ambient-light sensing that pairs with TSI to improve robustness. Place the part on a 4-layer board with proper TSI electrode shielding and ground ring; the segment-LCD controller and TSI can coexist in display panels with combined numeric/keypad zones for end-user input.
推荐
推荐产品汇总
工程参考数据： MK20DX128VFT5 ——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 | MK20DX128VFM5 | MK20DX256VFT5 | MK20DN128VFT5 | MK10DX128VFT5 |
|---|---|---|---|---|---|
| Package | 48-QFN-EP (7x7 mm) | 48-QFN-EP (7x7 mm) - same | 48-QFN-EP (7x7 mm) - same | 48-QFN-EP (7x7 mm) - same | 48-QFN-EP (7x7 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 |
| Max Clock Speed | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| Flash Size | 128 KB | 128 KB | 256 KB | 128 KB | 128 KB |
| SRAM Size | 16 KB | 16 KB | 32 KB | 16 KB | 16 KB |
| USB OTG | Yes (Full-Speed, with Charger Detect) | Yes (Full-Speed, with Charger Detect) | Yes (Full-Speed, with Charger Detect) | No USB OTG | No USB OTG |
| Segment LCD | Yes (up to 8x36 segments) | Yes (up to 8x36 segments) | Yes (up to 8x36 segments) | Yes | No segment LCD |
| Hardware AES / TRNG | Yes | Yes | Yes | Yes | No |
关键差异点
- Integrated USB 2.0 OTG with Device Charger Detect （对比 MK20DN128VFT5 (no USB))
- Built-in segment LCD controller up to 8x36 （对比 MK10DX128VFT5 (no LCD))
- Hardware AES and true random number generator （对比 MK10DX128VFT5 (no crypto accelerators))
- Identical pinout as K20 family density variants （对比 MK20DX256VFT5 (256 KB flash variant))
设计说明
Estimated: The 48-QFN-EP package dissipates heat through the exposed thermal pad on the bottom of the IC. For USB peripherals running at full 50 MHz with active USB, expect ~100-200 mW dissipation and adequate thermal relief from a copper pour of at least 1 square inch connected to the exposed pad. Without sufficient thermal vias (typically a 4x4 via array under the pad), junction-to-ambient thermal resistance increases significantly and may trigger thermal shutdown at elevated ambient temperatures.
USB DP/DM traces must be routed as a 90-ohm differential pair with length matching within 150 mils per USB 2.0 specifications; place the part near the USB connector to minimize stub lengths and stubs. Decouple VREGIN with 10 µF bulk ceramic plus 100 nF X7R bypass adjacent to the pin; decouple each VDD pin with 100 nF X7R. Avoid routing sensitive analog traces (ADC inputs) near switching nodes or USB DP/DM traces; place a guard ground ring around the analog section for noise isolation.
Do not power the VREGIN pin from VBAT directly without current limiting; USB charging events can source up to 1.5 A and stress the regulator. Confirm the correct boot configuration pins (PTA0/PTA1/PTA2/PTA3/PTA4/PTA5 default low) match your BOOTCFG table for boot-from-flash operation; misconfigured boot pins can cause boot failures or unintended bootloader entry. Reference the NXP K20 datasheet's clocking chapter before configuring the MCG PLL to avoid lockup conditions.
The MK20DX128VFT5 ships with internal voltage regulation (1.2 V core) and supports multiple low-power modes - VLPS, LLS, and VLLS - that drop quiescent current to single-digit microamps. Configure the SMC and PMC modules for wake-on-touch (TSI), wake-on-RTC, or wake-on-USB-session-detect to balance battery life and response time. The internal bandgap and voltage regulator require external decoupling per the datasheet to ensure stable operation across temperature.
合规信息
RoHS and REACH compliant per NXP product page; lead-free packaging confirmed in datasheet markings. Not AEC-Q100 qualified - choose MK20DX128VFT5-Q1 variants for automotive applications where specified.
