MK50DX256CMC7 - 72MHz Cortex-M4 MCU, 256KB Flash | NXP
料号： MK50DX256CMC7 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $17.98 | $17.98 |
| 10 | $16.18 | $161.80 |
| 100 | $13.88 | $1,388.00 |
| 500 | $12.18 | $6,090.00 |
| 1,000 | $11.04 | $11,040.00 |
MK50DX256CMC7 概述
A microcontroller (MCU) is a single-chip processor that integrates a CPU core, volatile and non-volatile memory, programmable peripherals, and bus interfaces on one die. ARM Cortex-M4 cores are 32-bit processor cores designed for deterministic real-time embedded workloads, with single-cycle multiply-accumulate instructions and an optional single-precision floating-point unit. The MK50DX256CMC7 belongs to the Kinetis K50 sub-family, which extends the broader Kinetis K-series (K0x/K1x/K2x/K5x/K6x) measurement portfolio and pins the SoC between entry-level K1x and high-performance K6x devices. Within that hierarchy it is a mid-range measurement MCU.
Key features include 256 KB of embedded flash, an integrated 16-bit ADC with up to four differential channels, a 12-bit DAC, four 16-bit timers plus an FlexTimer with PWM capability, an integrated full-speed USB 2.0 device/host/On-The-Go controller, multiple serial interfaces (UART, SPI, I2C, I2S), and a low-power Sleep/Deep-Power-Down mode. The 72 MHz Cortex-M4 core delivers 1.25 DMIPS/MHz with a hardware MAC and single-precision FPU, giving roughly 90 DMIPS of integer performance.
Architecturally, the device combines the ARM Cortex-M4 core with a multi-layer AHB-Lite bus matrix, tightly-coupled flash and RAM controllers, and a Low-Leakage Wake-Up Unit (LLWU) that supports multiple wake-up sources while the chip is in Deep-Power-Down. The 121-MAPBGA package exposes the full set of K50 peripherals on the same footprint as other K50-family MCUs, enabling PCB reuse across SKUs of different flash/RAM densities.
Typical applications include single-phase and polyphase electricity meters, industrial motor-control inverters, machine-to-machine gateways with USB, portable medical instrumentation, and HMI panels with USB connectivity. The Cortex-M4+DSP extensions also make the part useful for digital signal conditioning and sensor-fusion front ends.
When laying out this part, allocate a continuous copper GND pour directly beneath the package and route the USB DP/DM pair as a 90-ohm differential line. Decouple VDD/VREFH locally with 100 nF X7R ceramics plus one bulk 4.7 uF per supply rail placed within 5 mm of the BGA balls.
This page synthesizes distributor stock, parametric drop-in alternates from the Kinetis K50 family, and application-grade design guidance that is not collected in the bare manufacturer datasheet.
直接替换替代料： MK50DX256CMC7 ——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： MK50DX256CMC7 （相同外形与封装尺寸） ——差异在于 ADC, DAC, Package.
快速对比工具——选择替代料号进行并排对比：
MK50DN512CMC7
✅ 直接替换📋 参考替代料（不在目录中）
MK50DX128CMC7
✅ 直接替换📋 参考替代料（不在目录中）
MK50DX256ZCMC7
✅ 直接替换📋 参考替代料（不在目录中）
MK51DX256CMC7
✅ 直接替换📋 参考替代料（不在目录中）
MK50DX256CMC7 最大额定值与电气特性
| Core | ARM Cortex-M4 with FPU and DSP extensions |
| Core Architecture | ARM 32-bit |
| 最大时钟频率 | 72 MHz |
| Program Flash | 256 KB |
| 电源电压 | 1.8 V / 2.5 V / 3.3 V |
| 工作温度 | -40C to +85C (industrial, per K50 family) |
| 封装 | 121-MAPBGA (8x8 mm) |
| 安装类型 | Surface Mount |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| ADC | 16-bit SAR ADC, multiple channels |
| DAC | 12-bit DAC |
| Timers | FlexTimer + 16-bit timers (PWM, capture, quadrature decode) |
| Serial Interfaces | UART, SPI, I2C, I2S |
| RoHS 状态 | Compliant |
| Peripherals (general) | GPIO, DMA, RTC, low-leakage wake-up unit |
MK50DX256CMC7 121-mapbga (8x8 mm) 引脚配置指南
MK50DX256CMC7（121-mapbga (8x8 mm) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： MK50DX256CMC7.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MK50DX256CMC7 适用于 6 应用s: Single-Phase Electricity Meter, Polyphase Power and Energy Meter, Industrial Sensor Hub with USB, Portable Medical Instrumentation, USB Human-Machine Interface (HMI) Panel, Smart Grid Communication Gateway.
Single-Phase Electricity Meter
The MK50DX256CMC7 fits single-phase electricity meter designs where its 16-bit SAR ADC and 32-bit Cortex-M4 core pair to deliver sub-1% active/reactive power accuracy across the full Class-1 dynamic range. With 256 KB of flash the part hosts metering firmware plus load-profile logging, while the integrated USB OTG enables firmware upgrade or tariff pull without opening the meter case. The 121-MAPBGA outline (8x8 mm) keeps the PCB compact enough for DIN-rail form factors, and K50 family pin-compat lets designers scale from 128 KB to 512 KB flash variants on the same artwork.
推荐
Polyphase Power and Energy Meter
For polyphase residential or industrial meters, the MK50DX256CMC7 supplies four independent differential ADC channels plus DSP-extended MAC instructions that drive per-phase FFT, RMS and THD calculations in real time. The Cortex-M4 FPU handles instantaneous power math with 1-cycle latency, leaving headroom for tamper detection and metrology LED drivers. Full-speed USB OTG enables BLE/Zigbee modems to enumerate as a host bridge, a common pattern in AMI concentrators. Kinetis K50 family RTC and low-leakage wake-up unit keep calendar-based TOU billing accurate during brownout events.
推荐
Industrial Sensor Hub with USB
The MK50DX256CMC7 acts as a USB-attached sensor hub aggregating analog and serial sensor inputs in factory automation. Its four FlexTimers drive PWM for actuator trim, while 256 KB of flash accommodates modbus, USB CDC and proprietary stack protocols. The 72 MHz core executes DSP-based filtering on incoming ADC streams without DMA offload, reducing bill-of-materials cost. K50 family pin-compatibility makes it straightforward to migrate to MK60DN512ZVMC10 when Ethernet connectivity is required downstream.
推荐
Portable Medical Instrumentation
The MK50DX256CMC7 suits portable patient monitors, pulse oximeters and digital stethoscopes because its 16-bit ADC captures biosignals at 200 kS/s while the Cortex-M4 FPU runs motion-artifact filtering in real time. USB OTG supports charging and data sync in a single port, and the 121-MAPBGA outline is small enough for handheld enclosures. Low-leakage deep-power-down mode keeps idle current low between measurements, extending battery life. K50 family 1.8 V operation is compatible with single-cell Li-ion rails through buck regulation.
推荐
USB Human-Machine Interface (HMI) Panel
Using MK50DX256CMC7 as the bridge MCU in a USB HMI lets the design host rotary encoders, keypads and LED indicators through a single USB cable without an external PHY. The part's FlexTimer PWM channels drive LED brightness at 16 kHz without flicker, while 256 KB flash stores fonts and animation profiles. The 121-MAPBGA outline gives engineers GPIO headroom for QSPI display add-on boards. Kinetis K50 family migration to the K51 (CAN-equipped) or K60 (Ethernet-equipped) variants preserves the layout while expanding connectivity.
推荐
Smart Grid Communication Gateway
The MK50DX256CMC7 is used in DLMS/COSEM metering gateways where it terminates RS-485 from the metering bus and presents data upstream through USB or a wireless modem. Its 72 MHz Cortex-M4 core runs full TLS/cipher stacks for secured communications, while the integrated USB OTG allows local diagnostics over a laptop. The 256 KB flash budget accommodates both the meter protocol stack and the communications stack side by side. Designers pin-for-pin swap to the 512 KB K50 family member when additional protocol modules are needed.
推荐
推荐产品汇总
工程参考数据： MK50DX256CMC7 ——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 | MK50DN512CMC7 | MK50DX128CMC7 | MK50DX256ZCMC7 | MK51DX256CMC7 | MK53DX256ZCLQ10 |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 121-MAPBGA (8x8 mm) | 121-MAPBGA (8x8 mm) - same | 121-MAPBGA (8x8 mm) - same | 121-MAPBGA (8x8 mm) - same | 121-MAPBGA (8x8 mm) - same | 144-LQFP - different |
| Core Architecture | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 |
| Maximum Clock Frequency | 72 MHz | 72 MHz | 72 MHz | 72 MHz | 72 MHz | 72 MHz |
| Program Flash | 256 KB | 512 KB | 128 KB | 256 KB | 256 KB | 256 KB |
| USB | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG |
| CAN | No | No | No | No | Yes | Yes |
| Supply Voltage | 1.8 V / 2.5 V / 3.3 V | 1.8 V / 2.5 V / 3.3 V | 1.8 V / 2.5 V / 3.3 V | 1.8 V / 2.5 V / 3.3 V | 1.8 V / 2.5 V / 3.3 V | 1.8 V / 2.5 V / 3.3 V |
关键差异点
- Compact 121-MAPBGA 8x8 mm outline with full-speed USB OTG integrated （对比 MK53DX256ZCLQ10)
- Pin-to-pin compatible with 128 KB and 512 KB K50 family members （对比 MK60DN512ZVMC10)
- K50 measurement-focused peripherals including 16-bit ADC with PGA （对比 MK22FX512AVLK12)
设计说明
Estimated: with all 121-MAPBGA balls active and a typical industrial ambient of +60 C, internal dissipation from the USB transceiver and ADC reference can drive junction temperature 30-35 C above ambient if the BGA has no centre GND balls soldered. Recommended thermal relief: keep all four inner GND balls soldered to a continuous GND plane and place thermal vias under the centre balls to spread heat into the inner copper layers.
Route the USB DP/DM pair as a 90-ohm differential with matched-length tracks (±150 mil). Keep the pair length under 50 mm to avoid ISI, and isolate the pair from clock sources by at least 3W spacing. Estimated: with the 72 MHz system clock driving CMOS I/O, expect 2-3 nH of simultaneous-switching-noise spike at high-current switching outputs, so an adjacent 100 nF + 4.7 uF bulk per VDD rail is essential.
Do not power the analog and digital VDD rails from the same regulator without an L-C filter in between; the 16-bit ADC reference will otherwise pick up switching noise. Per the K50 datasheet, place one ferrite bead between MCU VDD and VREFH, plus a 100 nF + 1 uF RC network directly at the VREFH pin. Estimated ADC dynamic range falls 1-2 ENOB otherwise.
合规信息
Industrial-grade Kinetis K50 family; RoHS and halogen-free per NXP product page. Not AEC-Q100 qualified; choose KEA or automotive Kinetis parts for vehicle applications.
