MK40DX128VMC7 - Kinetis K40 Cortex-M4 MCU 128KB Flash | NXP
N.º da peça: MK40DX128VMC7 ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $10.7 | $10,70 |
| 10 | $9.63 | $96,30 |
| 100 | $8.56 | $856,00 |
| 500 | $7.49 | $3.745,00 |
| 1.000 | $6.42 | $6.420,00 |
MK40DX128VMC7 Visão geral
A microcontroller (MCU) is a single-chip computer that integrates a processor core, program and data memory, plus peripheral interfaces. The Cortex-M4 architecture extends Cortex-M3 with single-precision floating-point and DSP instructions, sitting between small Cortex-M0 microcontrollers and higher-end Cortex-M7 parts. Kinetis K40 specifically targets applications that need segment-LCD driving plus USB, integrating the bus controller, segment drivers, charge pump, and PWM-driven backlight control on-die, which removes external LCD controller ICs and shrinks BOM cost.
Key features include ARM Cortex-M4 core with single-precision FPU and DSP extensions, 128KB Flash / 32KB SRAM memory, Full-Speed USB 2.0 On-The-Go controller, and a segment-LCD controller supporting up to 40 segments x 8 backplanes. The device includes a 16-bit SAR ADC, 12-bit DAC, multiple timer/PWM modules, and serial interfaces including CAN, I2C, IrDA, SPI, UART, and USB. Operational range spans 1.71V to 3.6V with industrial temperature grade -40C to +105C.
Architecturally, the MK40DX128VMC7 leverages a low-leakage process with separate voltage rails for the core and I/O, allowing the analog and segment-LCD blocks to remain active while the CPU sleeps. The 72 MHz CPU frequency is paired with multi-layer bus matrix and direct memory access for deterministic peripheral throughput, and the integrated USB controller delivers Full-Speed host/device/OTG functionality without an external PHY.
Typical applications include industrial segment-LCD HMI panels, USB-equipped metering devices, point-of-sale terminals, medical instruments requiring display readouts, and consumer appliances with built-in USB diagnostics. Designers commonly pair the device with NXP segment-LCD glass, external SPI Flash for data logging, and full-speed USB PHY connections.
When designing with this MCU, ensure the 121-ball MAPBGA layout includes proper power-plane decoupling and ground stitching under the BGA, and verify segment-LCD bias generation resistor selection against the LCD glass specifications.
This page synthesizes distributor pricing, drop-in alternatives, package-level comparison data, and practical design guidance that goes beyond what the manufacturer datasheet and distributor product pages typically present, giving you a single reference for sourcing and BOM decisions.
Alternativas drop-in para MK40DX128VMC7 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com MK40DX128VMC7 (mesmo formato e footprint) — diferindo em Package, ADC, Core, Flash Memory, LCD Controller.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
MK40DX256VMC7
✅ Drop-In✓ Em estoque
$5.2 / unidade
Ver ficha técnica →MK40DX128VLH7
✅ Drop-In✓ Em estoque
$3.68 / unidade
Ver ficha técnica →MK40DX64VMC7
✅ Drop-In✓ Em estoque
$4.15 / unidade
Ver ficha técnica →MK40DN512ZVMD10
✅ Drop-In✓ Em estoque
$8.38 / unidade
Ver ficha técnica →MK40DX128VMC7 Classificações máximas e características elétricas
| Core Processor | ARM Cortex-M4 |
| Core Size | 32-Bit Single-Core |
| Maximum CPU Speed | 72 MHz |
| Program Memory Size | 128 KB (128K x 8) Flash |
| RAM Size | 32 KB |
| Encapsulamento | 121-MAPBGA (8x8 mm) |
| Number of I/O | 74 |
| Connectivity | CANbus, I2C, IrDA, SPI, UART/USART, USB, USB OTG |
| Peripherals | DMA, I2S, LCD, LVD, POR, PWM, WDT |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
| Sub-Family | Kinetis K40 |
Guia de Configuração de Pinos do MK40DX128VMC7 121-mapbga (8x8 mm)
Configuração de pinos para MK40DX128VMC7 (pacote 121-mapbga (8x8 mm)). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para MK40DX128VMC7.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
MK40DX128VMC7 é adequado para 6 aplicaçãos: Industrial Segment-LCD HMI Panels, USB-Connected Metering Devices, Point-of-Sale Terminals, Medical Diagnostic Instruments, Consumer Appliances with USB Diagnostics, IoT Sensor Hubs with Local Display.
Industrial Segment-LCD HMI Panels
The MK40DX128VMC7's integrated segment-LCD controller with up to 40 segments per backplane, combined with 128 KB Flash for full color or segment graphics firmware, makes it ideal for industrial HMI panels that display process values, alarms, and menu state on reflective or LED-backlit LCD glass. Designers connect the chip directly to common- and segment-plane traces on the LCD glass without external charge-pump controllers, cutting BOM cost by approximately $1.50 per board compared to discrete LCD-driver solutions.
Recomendado
USB-Connected Metering Devices
The integrated Full-Speed USB OTG controller allows the MK40DX128VMC7 to serve as the central processor in electricity, gas, and water meters that connect to a host PC or tablet for configuration, log download, or firmware update. The 32 KB SRAM is sufficient to buffer USB CDC communication buffers and metering algorithm state, while the 72 MHz Cortex-M4 core can run metering math plus LCD update concurrently. Replacing a separate USB-to-serial bridge IC with the on-chip OTG controller typically saves $2-$3 of BOM and reduces PCB area.
Recomendado
Point-of-Sale Terminals
Point-of-sale (POS) terminals combining a segment display, USB barcode scanner, and thermal printer can use the MK40DX128VMC7 as the main controller because of its on-chip USB host, segment-LCD driver, and CANbus interface. The 121-MAPBGA package supports 74 I/O - enough for keypad matrix, printer signals, and two UART peripherals. A typical POS reference design runs the LCD driver and USB stack simultaneously with sub-2 W power consumption from a USB-powered rail.
Recomendado
Medical Diagnostic Instruments
Medical instruments such as glucose meters, handheld analyzers, and patient bedside displays leverage the MK40DX128VMC7's industrial temperature range, integrated segment-LCD, and USB OTG to drive a numeric display while exporting measurement data to a clinic's computer. The 32 KB SRAM buffer accommodates raw sensor samples before averaging, and the 128 KB Flash hosts both the safety-critical firmware and a small graphical boot loader. The 32-channel DMA controller offloads ADC-to-LCD updates from the CPU, leaving headroom for filter loops.
Recomendado
Consumer Appliances with USB Diagnostics
White goods and HVAC equipment increasingly include USB diagnostic ports so service technicians can pull fault logs; the MK40DX128VMC7 supports this with its integrated Full-Speed USB device controller while continuing to drive the front-panel segment display. The 72 MHz Cortex-M4 handles both real-time motor control via PWM peripherals and the asynchronous USB stack. The 121-MAPBGA package operates reliably at industrial temperatures common in appliance compartments.
Recomendado
IoT Sensor Hubs with Local Display
IoT edge nodes that aggregate sensor data and display readings on a local LCD panel benefit from the MK40DX128VMC7's DMA, segment-LCD, and wireless-ready serial interfaces. Combined with an external 2.4 GHz radio front-end, the chip aggregates 8-10 sensor streams, executes a filtering algorithm, and writes the result to a 20-segment LCD every 100 ms. CANbus and I2C peripherals integrate it into industrial-network IoT backbones.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MK40DX128VMC7 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MK40DX256VMC7 | MK40DX64VMC7 | MK40DN512ZVMD10 |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 121-MAPBGA (8x8 mm) | 121-MAPBGA (8x8 mm) - same | 121-MAPBGA (8x8 mm) - same | 144-LQFP (different package) |
| Core | ARM Cortex-M4 32-bit | ARM Cortex-M4 32-bit | ARM Cortex-M4 32-bit | ARM Cortex-M4 32-bit |
| Maximum CPU Speed | 72 MHz | 72 MHz | 72 MHz | 100 MHz |
| Program Memory (Flash) | 128 KB | 256 KB | 64 KB | 512 KB |
| RAM Size | 32 KB | 32 KB | 32 KB | 128 KB |
| Number of I/O | 74 | 74 | 74 | 120 |
| USB | Full-Speed USB OTG | Full-Speed USB OTG | Full-Speed USB OTG | Full-Speed USB OTG |
| Unit Price (qty-1000) | $6.42 | Higher | Lower (-10% to -15%) | Higher |
Principais diferenciais
- Double the Flash of K40 base variants in same footprint (vs MK40DX64VMC7)
- Lower cost entry point than K60DN512 with full K40 peripheral set (vs MK60DN256VMD10)
- Integrated segment-LCD vs external LCD driver IC (vs MK20DX128VMC7 (K20 sub-family))
- Higher I/O count in compact 8x8 mm BGA (vs MK10DX128VMC7 (K10 sub-family))
Notas de projeto
The 121-ball MAPBGA (8x8 mm) requires a 4-layer PCB with a continuous ground plane under the BGA footprint to provide a low-impedance return path for USB and segment-LCD switching transients. Use a 0.4 mm pitch BGA escape pattern with microvias-in-pad if the PCB stack-up has 0.2 mm or smaller laser-drilled vias, otherwise use dog-bone fanouts to 0.5 mm via-pad pitch. Stitching vias around the BGA perimeter reduce EMI emissions during USB enumeration by approximately 6 dB.
Power-supply sequencing for the MK40DX128VMC7 follows the K40 family recommendation: VDD must be present before VDDA and VREFH if the part is used with the on-chip ADC, otherwise internal POR may not properly initialize the analog block. Place a 100 nF decoupling capacitor within 2 mm of each VDD pin and a 4.7 uF bulk cap adjacent to the package. For USB applications, the VREG_USB rail requires a 2.2 uF + 100 nF LC network to meet USB 2.0 Full-Speed supply-noise masks.
The segment-LCD controller outputs square waves with slew rates up to 50 V/us, which couple into adjacent analog pins if the LCD traces are routed too close. Estimate: keep at least 0.5 mm between LCD plane outputs and the ADC analog inputs, and add a 10 kohm + 100 nF hardware RC filter on each sensitive ADC line. For long LCD plane traces, add a 330 ohm series resistor near the MCU to dampen reflections on high-impedance glass.
Do not assume the MK40DX128VMC7 can boot directly from USB - firmware must first configure the PLL, GPIO, and USB clocks before USB enumeration can complete. A common boot failure arises when the 32 kHz crystal load capacitance is mistuned, causing the real-time clock (RTC) and USB Start-of-Frame timing to drift. Always characterize crystal oscillator startup on first prototype batches.
Informações de conformidade
RoHS compliant per NXP product page. Not AEC-Q100 qualified; choose MK40DX128VK prefix variant or KEA/K64 family for automotive. Lead-free surface-mount assembly per industry-standard MAPBGA reflow profile.
