MK20DX64VFT5 - Kinetis K20 ARM Cortex-M4 MCU, 50MHz, 64KB Flash | NXP
料号： MK20DX64VFT5 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $8.52 | $8.52 |
| 10 | $7.78 | $77.80 |
| 100 | $6.45 | $645.00 |
| 500 | $5.62 | $2,810.00 |
| 1,000 | $4.85 | $4,850.00 |
MK20DX64VFT5 概述
Kinetis K20 microcontrollers are low-power ARM Cortex-M4 devices optimized for mixed-signal and USB-capable embedded applications. They sit within the broader Kinetis E-series family, which combines deterministic Cortex-M4 performance with low-power run, wait, and stop modes, a hardware CRC engine, and a rich mix of analog and digital peripherals. The K20 sub-family specifically targets designs that require USB 2.0 full-speed On-The-Go, segmented LCD control (option), and a small-form-factor QFN package for space-limited products.
The MK20DX64VFT5 features an ARM Cortex-M4 core with single-precision FPU, 64 KB program Flash, 16 KB SRAM, 29 general-purpose I/O, a 16-bit SAR ADC, 12-bit DAC, multiple timers (FTM, PIT, LPTMR, RTC), USB-OTG (full-speed), CAN, I2C, SPI, UART, and an integrated hardware CRC module. The 48-QFN-EP package provides a low-thermal-resistance path via the exposed pad, allowing the device to deliver full 50 MHz performance in industrial enclosures.
From an architecture standpoint, the K20 uses a Cortex-M4 core with a 3-stage pipeline, single-cycle MAC, and a tightly-coupled peripheral bridge that allows deterministic interrupt latency. The integrated voltage regulator and power-management controller support multiple low-power modes (Run, Wait, Stop, VLPR, VLPW, VLPS), enabling deep-sleep currents in the microamp range for battery-powered applications.
Typical applications include USB human-interface devices (HID) such as keyboards, mice, and game controllers, low-power industrial sensor nodes, building automation controllers, consumer appliances with segmented LCD displays, and portable medical point-of-care instruments. Its combination of USB-OTG, low-power modes, and compact QFN-EP package also makes it a fit for wearable fitness devices and small-form-factor IoT endpoints.
A key design consideration is decoupling: place a 0.1 uF ceramic capacitor as close as possible to each VDD/VSS pair, plus a bulk 4.7 uF capacitor on the main supply. The exposed pad (EP) must be soldered to a sufficiently large ground copper pour to meet -40C to +105C industrial temperature specs at full 50 MHz clock.
This page synthesizes distributor pricing (as of 2026-10-19), drop-in Kinetis alternatives, and practical design notes that complement the NXP K20 reference manual and datasheet.
直接替换替代料： MK20DX64VFT5 ——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： MK20DX64VFT5 （相同外形与封装尺寸） ——差异在于 Connectivity, Package, Program Memory Size, RAM Size, Core Processor.
快速对比工具——选择替代料号进行并排对比：
MK20DX128VFT5
✅ 直接替换✓ 有现货
$4.25 / 个
查看数据手册 →MK20DN64VFT5
✅ 直接替换📋 参考替代料（不在目录中）
MK20DX64VLF5
✅ 直接替换📋 参考替代料（不在目录中）
MKL15Z64VFT4
✅ 直接替换✓ 有现货
$2.44 / 个
查看数据手册 →MKE04Z64VLD2
✅ 直接替换📋 参考替代料（不在目录中）
MK20DX64VFT5 最大额定值与电气特性
| Core | ARM Cortex-M4 with single-precision FPU |
| Core Size | 32-bit |
| Maximum Clock Speed | 50 MHz |
| Program Memory (Flash) | 64 KB (64K x 8) |
| RAM Size | 16 KB |
| Supply Voltage Range | 1.71 V to 3.6 V |
| I/O Pins | 29 |
| 工作温度范围 | -40C to +105C (Industrial) |
| 封装 | 48-QFN-EP (7x7 mm) with exposed thermal pad |
| 安装类型 | Surface Mount |
| Connectivity | USB OTG (Full-Speed), CAN, I2C, SPI, UART, I2S |
| ADC | 16-bit SAR ADC |
| DAC | 12-bit DAC |
| Timers | FTM, PIT, LPTMR, RTC |
| Security / Integrity | Hardware CRC module, 128-bit unique ID |
| Low-Power Modes | Wait, VLPR, VLPW, VLPS, Stop |
| MSL 等级 | 3 (per JEDEC J-STD-020) |
| RoHS 状态 | Compliant |
MK20DX64VFT5 引脚配置
| 引脚 1 | PTD0 — General-purpose I/O / SPI0 PCS |
| 引脚 2 | PTD1 — General-purpose I/O / SPI0 SCK |
| 引脚 3 | PTD2 — General-purpose I/O / SPI0 MOSI |
| 引脚 4 | PTD3 — General-purpose I/O / SPI0 MISO |
| 引脚 5 | PTD4 — General-purpose I/O / FTM0_CH4 |
| 引脚 6 | PTD5 — General-purpose I/O / FTM0_CH5 |
| 引脚 7 | PTD6 — General-purpose I/O / FTM0_CH6 |
| 引脚 8 | PTD7 — General-purpose I/O / FTM0_CH7 |
| 引脚 9 | VSS — Ground |
| 引脚 10 | VDD — Supply voltage (1.71-3.6 V) |
| 引脚 11 | PTE0 — General-purpose I/O / UART1_CTS |
| 引脚 12 | PTE1 — General-purpose I/O / UART1_RTS |
| 引脚 13 | PTE2 — General-purpose I/O / SPI1_MOSI |
| 引脚 14 | PTE3 — General-purpose I/O / SPI1_MISO |
| 引脚 15 | PTE4 — General-purpose I/O / SPI1_PCS |
| 引脚 16 | PTE5 — General-purpose I/O / SPI1_SCK |
| 引脚 17 | PTE6 — General-purpose I/O / FTM0_CH6 |
| 引脚 18 | PTE7 — General-purpose I/O / FTM0_CH7 |
| 引脚 19 | PTA0 — General-purpose I/O / FTM0_CH0 |
| 引脚 20 | PTA1 — General-purpose I/O / FTM0_CH1 |
| 引脚 21 | PTA2 — General-purpose I/O / UART0_RX |
| 引脚 22 | PTA3 — General-purpose I/O / UART0_TX |
| 引脚 23 | PTA4 — General-purpose I/O / I2C0_SCL |
| 引脚 24 | PTA5 — General-purpose I/O / I2C0_SDA |
| 引脚 25 | VSS — Ground |
| 引脚 26 | VDD — Supply voltage (1.71-3.6 V) |
| 引脚 27 | PTB0 — General-purpose I/O / ADC0_SE0 |
| 引脚 28 | PTB1 — General-purpose I/O / ADC0_SE1 |
| 引脚 29 | PTB2 — General-purpose I/O / ADC0_SE2 |
| 引脚 30 | PTB3 — General-purpose I/O / ADC0_SE3 |
| 引脚 31 | PTB4 — General-purpose I/O / FTM1_CH0 |
| 引脚 32 | PTB5 — General-purpose I/O / FTM1_CH1 |
| 引脚 33 | PTB6 — General-purpose I/O / FTM1_CH2 |
| 引脚 34 | PTB7 — General-purpose I/O / FTM1_CH3 |
| 引脚 35 | PTC0 — General-purpose I/O / FTM2_CH0 |
| 引脚 36 | PTC1 — General-purpose I/O / FTM2_CH1 |
| 引脚 37 | PTC2 — General-purpose I/O / I2C1_SCL |
| 引脚 38 | PTC3 — General-purpose I/O / I2C1_SDA |
| 引脚 39 | PTC4 — General-purpose I/O / CAN0_TX |
| 引脚 40 | PTC5 — General-purpose I/O / CAN0_RX |
| 引脚 41 | PTC6 — General-purpose I/O / FTM2_CH4 |
| 引脚 42 | PTC7 — General-purpose I/O / FTM2_CH5 |
| 引脚 43 | USB_DP — USB D+ data line |
| 引脚 44 | USB_DM — USB D- data line |
| 引脚 45 | VOUT33 — USB regulator 3.3 V output |
| 引脚 46 | RESET_b — Active-low reset input |
| 引脚 47 | EXTAL — External crystal/clock input |
| 引脚 48 | XTAL — External crystal output |
| 引脚 EP | EPAD — Exposed thermal pad - must be soldered to ground |
典型应用
MK20DX64VFT5 适用于 6 应用s: USB Human Interface Devices, Industrial Sensor Hubs, Portable Medical Devices, Building Automation Controllers, Consumer Appliance Controllers, IoT Edge Nodes with USB Connectivity.
USB Human Interface Devices
The MK20DX64VFT5 is well suited to USB Human Interface Device (HID) applications such as keyboards, mice, game controllers, and remote controls. Its integrated USB 2.0 full-speed OTG controller with internal PHY eliminates external PHY components and its 50 MHz Cortex-M4 core delivers enough headroom for HID report parsing, LED matrix driving, and capacitive touch scanning simultaneously. The 64 KB Flash accommodates USB HID descriptors plus custom firmware, while 16 KB SRAM handles HID buffers and scan state. The 48-QFN-EP (7x7 mm) footprint enables ultra-compact USB dongle designs with 29 GPIO sufficient for key matrix scanning and status LEDs. Compared to the MK10DX64VFT5 (no USB), this K20 variant saves PCB area and BOM cost.
推荐
Industrial Sensor Hubs
For industrial sensor hubs that read 4-20 mA loops, RTDs, or thermistors and report via CAN or UART, the MK20DX64VFT5 offers 50 MHz Cortex-M4 performance for sensor linearization and DSP filtering, plus an integrated 16-bit SAR ADC for direct precision measurement. The hardware CRC engine supports industrial protocols such as Modbus RTU, while the CAN bus peripheral enables direct connection to factory networks. The 1.71 V to 3.6 V supply range supports 3.3 V industrial rails with brownout detection. With 64 KB Flash and 16 KB SRAM, the part handles small RTOS kernels and complex sensor fusion. The -40C to +105C industrial temperature grade suits factory-floor deployment without thermal management.
推荐
Portable Medical Devices
The MK20DX64VFT5 fits portable medical point-of-care devices such as glucose meters, pulse oximeters, and handheld diagnostic tools. The Cortex-M4 with FPU runs sensor DSP algorithms at low power, while the 12-bit DAC supports analog stimulus generation. USB-OTG enables data upload to clinical PCs and battery charging via standard USB. The low-power modes (VLPR, VLPS, Stop) extend battery life to weeks, and the 64 KB Flash fits IEC 62304-class B firmware with safety margins. The 48-QFN-EP package suits small handheld enclosures. For designs requiring Class C safety integrity, pair with the K20 hardware CRC and watchdog for self-test routines.
推荐
Building Automation Controllers
For building automation such as HVAC controllers, smart thermostats, and lighting control panels, the MK20DX64VFT5 offers the right mix of peripherals. Multiple UARTs handle RS-485 Modbus, while I2C drives temperature/humidity sensors and SPI drives LCD displays. The 16-bit ADC reads analog inputs from setpoint potentiometers and 4-20 mA transducers. The hardware CRC engine ensures reliable Modbus RTU and BACnet MS/TP communications. The Cortex-M4 DSP extensions enable on-board HVAC control loop math. With 29 GPIO, the part can drive triac controls, relay outputs, and keypad inputs. Industrial -40C to +105C temperature rating suits unheated mechanical rooms.
推荐
Consumer Appliance Controllers
The MK20DX64VFT5 is a fit for consumer appliance controllers such as washing machines, refrigerators, coffee machines, and air purifiers. The 50 MHz Cortex-M4 core runs motor control loops (using FTM timers for PWM), user-interface graphics on segment LCD or TFT, and safety monitoring concurrently. USB-OTG enables firmware update via USB stick for field service. The 64 KB Flash fits appliance firmware with diagnostics and OTA bootloader. 16 KB SRAM supports UI buffers and motor-control state. The 48-QFN-EP package fits compact appliance PCBs. Compared to legacy 8-bit MCUs, the K20 dramatically reduces firmware complexity while maintaining cost parity.
推荐
IoT Edge Nodes with USB Connectivity
For IoT edge nodes that bridge wired sensors to USB-attached hosts, the MK20DX64VFT5 provides USB device connectivity, multiple serial interfaces for sensor aggregation, and low-power sleep modes for battery operation. The Cortex-M4 supports edge analytics such as simple anomaly detection before reporting. The hardware CRC engine secures USB packet integrity. The 1.71 V to 3.6 V supply supports direct Li-Ion battery operation with on-chip brownout reset. With the exposed pad providing low thermal resistance, the device operates at full 50 MHz in sealed enclosures. The 64 KB Flash fits TLS-lite client plus application logic, while 16 KB SRAM handles TLS buffers and edge compute state.
推荐
推荐产品汇总
工程参考数据： MK20DX64VFT5 ——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 | MK20DX128VFT5 | MK20DN64VFT5 | MK20DX64VLF5 | MKL15Z64VFT4 |
|---|---|---|---|---|---|
| Package | 48-QFN-EP (7x7 mm) | 48-QFN-EP (7x7 mm) - same | 48-QFN-EP (7x7 mm) - same | 48-LQFP (7x7 mm) - different package | 48-QFN-EP (7x7 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors - same brand | NXP Semiconductors - same brand | NXP Semiconductors - same brand | NXP Semiconductors - same brand |
| Core | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M0+ (lower) |
| Maximum Clock Speed | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 48 MHz |
| Flash Memory | 64 KB | 128 KB | 64 KB | 64 KB | 64 KB |
| RAM Size | 16 KB | 16 KB | 16 KB | 16 KB | 8 KB |
| USB OTG | Yes (USB 2.0 Full-Speed) | Yes | No (K20 non-USB variant) | Yes | Yes (USB-FS) |
| Supply Voltage | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V | 1.71 V to 3.6 V |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C |
关键差异点
- USB-OTG integrated with internal PHY （对比 MK20DN64VFT5)
- Compact 48-QFN-EP (7x7 mm) with 29 GPIO （对比 MK20DX64VMC7)
- Cortex-M4 with FPU and 50 MHz core （对比 MKE04Z64VLD2)
设计说明
Place a 0.1 uF ceramic decoupling capacitor as close as possible to each VDD/VSS pair (typically pins 10, 26) and add a single 4.7 uF bulk capacitor on the main 3.3 V rail. The exposed thermal pad (EP) must be soldered to a ground copper pour with at least 16 thermal vias (0.3 mm drill, 0.5 mm pitch) to meet -40C to +105C industrial temperature specs at full 50 MHz operation. Keep high-speed USB DP/DM traces (pins 43, 44) at 90 ohms impedance and matched within 150 mil.
The MK20DX64VFT5 integrates a 3.3 V LDO (VOUT33, pin 45) for the USB PHY; this LDO can source ~50 mA but is intended only for USB transceiver power, not external loads. For designs with USB, add a 4.7 uF X5R ceramic on VOUT33 to stabilize the internal LDO. Brownout detection and low-voltage detect (LVD) are configurable via the PMC module - set LVD to interrupt below 2.7 V for safe shutdown on 3.3 V rails.
Do not leave the RESET_b pin (pin 46) floating; tie it to VDD through a 10 kohm pull-up with a 100 nF cap to ground for clean power-on-reset behavior. The EXTAL/XTAL pins (47, 48) require proper load capacitor selection per crystal manufacturer datasheet; incorrect capacitors cause frequency error or oscillator startup failure. The NMI pin functionality must be configured in the SIM module or it will not generate non-maskable interrupts as expected.
合规信息
RoHS and REACH compliance per NXP product page environmental section. Industrial temperature grade -40C to +105C. Not AEC-Q100 qualified; for automotive designs choose Kinetis KEA or S32K families.
