MK40DX256VMC7 - 72MHz Cortex-M4 MCU, 256KB Flash | NXP
MPN: MK40DX256VMC7 ✓ Hoạt độngMK40DX256VMC7 Tóm tắt
A microcontroller (MCU) is an integrated circuit containing a processor core, program memory (Flash), working memory (RAM), and programmable peripherals. The ARM Cortex-M4 core family is widely adopted for embedded designs because it combines deterministic interrupt behaviour, Thumb-2 instruction efficiency, and DSP instructions for signal processing. The K40 belongs to NXP's Kinetis portfolio positioned for mid-performance scalable designs sharing a common toolchain, peripheral library, and pinout philosophy.
Key features of the MK40DX256VMC7 include a Cortex-M4 core with single-precision FPU, hardware cryptographic acceleration (CAU), 16-bit ADC, comparators, DAC, programmable delay block, multiple serial interfaces (UART, SPI, I2C), segment LCD driver, and Full-Speed USB On-The-Go. The K40 family supports FlexMemory with EEPROM emulation in flash, allowing configurable endurance vs. density trade-offs. The integrated segment LCD controller enables direct drive of up to several hundred LCD segments without external drivers.
The MK40DX256VMC7 operates from 1.71 V to 3.6 V with multiple low-power modes (Wait, Stop, VLPR, VLLS). It includes a flexible 8-channel DMA, 16-bit SAR ADC with hardware averaging, programmable gain amplifiers, and temperature sensor. The 121-MAPBGA package (8x8 mm) provides a compact footprint for space-constrained designs while exposing the full peripheral complement.
Typical applications include industrial HMI panels with LCD, medical patient monitors, USB peripherals, e-metering/energy harvesting devices, and portable consumer products. The segment LCD and USB combination is particularly suited for small appliances with display and connectivity. The hardware crypto accelerator (CAU) supports DES, AES, and SHA algorithms for secure communication.
Designers should evaluate active mode power consumption versus low-power leakage and confirm the BGA ballout allows routing of the segment LCD bus and USB differential pair. Decoupling and PCB stack-up for the MAP-BGA require careful impedance control for USB and careful via-in-pad or dog-bone fan-out for reliable assembly.
This page synthesises distributor stock, lifecycle status, drop-in same-family alternatives, and design considerations for engineers evaluating the K40 series, beyond what a single datasheet page offers.
Bộ thay thế dễ dàng lắp đặt cho MK40DX256VMC7 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MK40DX256VMC7 (cùng hình factor và footprint) — khác nhau ở Package, Mounting Type, ADC, MSL Level, Operating Temperature.
MK40DX128VMC7
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MK40DX256VMD10
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MK40DX256VMB7
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MK20DX256VMC7
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MK30DX256VLK7
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MK40DX256VMC7 Tỷ lệ tối đa & tính chất điện
| Core | ARM Cortex-M4 with FPU |
| Tần số xung maksimum | 72 MHz |
| Bề rộng đường dữ liệu | 32 bit |
| Program Memory Size | 256 KB Flash |
| RAM Size | 64 KB SRAM |
| Hộp | 121-MAPBGA (8x8 mm) |
| Supply Voltage Range | 1.71 V to 3.6 V |
| Nhiệt độ hoạt động | -40C to +105C |
| Kiểu lắp đặt | Surface Mount |
| USB Interface | Full-Speed USB OTG |
| LCD Controller | Segment LCD driver integrated |
| ADC | 16-bit SAR ADC |
| DMA Channels | 8 channels |
| Cấp MSL | 3 |
| Trạng thái RoHS | Compliant |
Hướng dẫn cấu hình chân MK40DX256VMC7 121-mapbga (8x8 mm)
Cấu hình chân cho MK40DX256VMC7 (121-mapbga (8x8 mm) gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho MK40DX256VMC7.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
MK40DX256VMC7 phù hợp cho 7 Áp dụngs: Industrial HMI with Segment LCD, Smart Electricity Meter, Medical Patient Monitor, USB Barcode Scanner / POS Terminal, Portable Consumer Appliance with Display, Industrial Sensor Hub with USB Diagnostics, IoT Edge Device with Secure Boot.
Industrial HMI with Segment LCD
The MK40DX256VMC7 is well matched to industrial HMI panels that drive a 4-to-8 common segment LCD with up to several hundred segments while maintaining USB connectivity for firmware updates. Its integrated segment LCD controller eliminates an external driver, reducing BOM and PCB area, while the 72 MHz Cortex-M4 core refreshes segments without CPU load. The hardware CAU (DES/AES/SHA) accelerates secure boot and field firmware verification typical in HMI controllers.
Được đề xuất
Smart Electricity Meter
Electricity meters benefit from the MK40DX256VMC7's 16-bit ADC, programmable gain amplifier, segment LCD for displaying kWh, and hardware crypto (AES/SHA) for signed metering data. The Cortex-M4 with FPU handles metering DSP and tamper detection in real time. Low-power VLLS modes support battery-backed RTC operation during power outages, and the wide 1.71 V to 3.6 V supply range suits single-cell Li-ion or supercap designs.
Được đề xuất
Medical Patient Monitor
Portable patient monitors use the MK40DX256VMC7's 16-bit ADC and DSP-capable Cortex-M4 to process ECG, SpO2, or temperature signals, while the segment LCD displays readings bedside. Full-Speed USB OTG connects to a host PC for data upload. The 121-MAPBGA package keeps the design compact for wearable form factors, and the hardware crypto accelerator (CAU) supports HIPAA-compliant encrypted data transfers.
Được đề xuất
USB Barcode Scanner / POS Terminal
Point-of-sale terminals leverage the MK40DX256VMC7's Full-Speed USB OTG to connect a barcode scanner and a host PC while displaying transaction data on a segment LCD. The 256 KB flash accommodates application firmware and transaction logging, and 64 KB SRAM supports menu structures without external memory. The 72 MHz core performs cryptographic operations for PCI-style secure transactions.
Được đề xuất
Portable Consumer Appliance with Display
Small kitchen or fitness appliances use the MK40DX256VMC7 to drive a segment LCD for time, weight, or status, while USB OTG allows charging and firmware updates. The Cortex-M4 FPU supports DSP for sensor fusion. Low-power VLLS modes extend battery life, and the integrated analog peripherals reduce component count versus discrete MCU plus external ADC designs.
Được đề xuất
Industrial Sensor Hub with USB Diagnostics
Industrial sensor hubs aggregate data from multiple analog or digital sensors and expose configuration via USB diagnostics. The MK40DX256VMC7's 16-bit ADC and PGA condition low-level sensor outputs, the DMA offloads data movement, and the CAU encrypts telemetry before transmission. The segment LCD shows status and address locally; the same USB port serves as both data and power input during service.
Được đề xuất
IoT Edge Device with Secure Boot
Edge IoT devices benefit from the MK40DX256VMC7's hardware CAU, which accelerates AES and SHA for secure boot and TLS handshakes. The 256 KB flash stores TLS stacks and application logic, while USB OTG or the segment LCD provides local interaction. The Cortex-M4 DSP instructions handle on-device analytics before encrypted transmission.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MK40DX256VMC7 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MK40DX128VMC7 | MK40DX256VMD10 | MK40DX256VMB7 | MK20DX256VMC7 |
|---|---|---|---|---|---|
| Brand | 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 |
| Core | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU |
| Max Clock Frequency | 72 MHz | 72 MHz | 100 MHz | 72 MHz | 72 MHz |
| Flash Size | 256 KB | 128 KB (-50%) | 256 KB | 256 KB | 256 KB |
| SRAM Size | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| USB Interface | Full-Speed USB OTG | Full-Speed USB OTG | Full-Speed USB OTG | Full-Speed USB OTG | Full-Speed USB OTG |
| Segment LCD Controller | Yes | Yes | Yes | Yes | No (different sub-family) |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +85C | -40C to +105C |
Bảo phân biệt quan trọng
- Integrated segment LCD controller (vsMK20DX256VMC7)
- Hardware cryptographic acceleration unit (CAU) (vsKinetis K10 sub-family)
- 16-bit ADC with programmable gain amplifier (vs12-bit ADC competitors in same tier)
Ghi chú thiết kế
The 121-MAPBGA package has 0.65 mm ball pitch on an 8x8 mm body. PCB design should use laser-drilled microvias with via-in-pad or dog-bone fan-out depending on assembly house capability. Four-layer stack-up with continuous ground plane beneath the BGA improves thermal dissipation and signal integrity for the 50 MHz+ USB bus. Decoupling capacitors must be placed as close as possible to the dedicated VDD/VSS pairs to suppress switching noise on the segment LCD outputs.
The MK50DX256CLL10 operates from 1.71 V to 3.6 V with multiple low-power modes (Wait, Stop, VLPR, VLLS). For battery-backed applications, route VBAT to the integrated RTC and supply-domain pin to retain time and a small register file during VLLS0. Decouple each VDD pin with 100 nF X7R plus a bulk 4.7 uF tantalum or ceramic. Estimate: at 72 MHz active mode with all peripherals on, core current is approximately 20-30 mA; VLLS0 leakage is below 1 uA per the K40 datasheet K40P100M72SF1.
The Full-Speed USB OTG requires 90 ohm differential impedance on D+/D- traces with matched length to within 150 mil. Keep the USB clock crystal within 5 mm of the XTAL pins and guard the traces with ground vias. The segment LCD bus can be routed on inner layers if total capacitance per segment is kept under the datasheet limit (typically 4000 pF per segment). Shield noisy digital signals from the analog 16-bit ADC inputs with a ground moat.
Do not enable the cryptographic acceleration unit (CAU) before configuring clocks correctly - improper MCG settings cause CAU read errors. When using FlexMemory for EEPROM emulation, follow the K40 reference manual's write-erase sequencing or risk flash corruption. Segment LCD outputs must be configured for the correct bias and frame frequency for the chosen glass; mismatched settings produce ghosting or low contrast.
Estimated: at maximum 72 MHz core speed and full peripheral activity, the MK40DX256VMC7 draws under 50 mA from 3.3 V (about 165 mW). With theta_JA approximately 40 C/W on a 4-layer JEDEC PCB, junction temperature rise is roughly 6.6 C above ambient - well within the 105 C limit. Derate accordingly if the part is sealed in a small enclosure with limited airflow.
Thông tin tuân thủ
RoHS compliance per DigiKey Marketplace product attributes; AEC-Q100 not applicable for non-automotive K40 grade.
