LPC2478FBD208K - 72MHz ARM7 MCU, 512KB Flash | NXP
MPN： LPC2478FBD208K ✓ 啟用中LPC2478FBD208K 概覽
A microcontroller is a programmable semiconductor that combines a processor core, memory, peripherals, and communication interfaces on one integrated circuit. The LPC2478 belongs to the microcontroller hierarchy, combining general-purpose embedded processing with network connectivity and human-machine-interface support. Its integrated interfaces reduce the need for separate protocol controllers while preserving expansion through external memory.
The device's principal features include an ARM7TDMI-S core, 72 MHz operating frequency, 512 KB flash, Ethernet, CAN, LCD, and USB 2.0 device, host, and OTG functions. According to the NXP product information, the USB controller supports device, host, and OTG operating roles, making the MCU applicable to devices that exchange data with a host, connect USB peripherals, or operate as a USB host themselves.
The LPC2478 architecture is intended for embedded systems requiring several communication paths and display support without relying on discrete interface components. Ethernet supports network-connected equipment, CAN supports industrial communication, and LCD control supports graphical human-machine interfaces. The external memory interface can extend system memory or connect additional peripherals where application data or graphics requirements exceed the internal resources.
Typical applications include industrial control equipment, medical systems, HMI panels, USB-to-Ethernet gateways, CAN-connected controllers, data acquisition units, and embedded network appliances. The combination of 72 MHz processing, 512 KB flash, and multiple integrated communications interfaces makes the part suitable for local control tasks that also need connectivity to a host, network, or industrial bus.
PCB design should preserve the 208-LQFP footprint, adequate power and ground distribution, and short high-frequency return paths. The external memory interface and USB communications require careful signal-integrity layout, while LCD and industrial interfaces should be routed away from switching nodes. Validate timing, impedance, decoupling, and peripheral assignments against the manufacturer datasheet before production release.
This page combines the manufacturer product information, distributor listings, interface and memory requirements, package constraints, and practical replacement guidance to help engineers evaluate the LPC2478FBD208K for connected embedded-control designs.
直接替換替代品，適用於 LPC2478FBD208K — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： LPC2478FBD208K （相同外形與佔位） — 差異在於 External Memory Interface, Package, CAN Interface, Ethernet Interface, Programming Interface.
LPC2478FBD208
✅ 直接替換📋 參考替代品（不在目錄中）
LPC2470FBD208
✅ 直接替換📋 參考替代品（不在目錄中）
LPC2420FBD208K
✅ 直接替換聯絡詢價
查看資料表 →LPC2468FBD208551
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →LPC2458FBD208
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
LPC2478FBD208K 最大額定值與電氣特性
| Product Type | Single-chip 16-bit/32-bit microcontroller |
| Processor Core | ARM7TDMI-S |
| Maximum CPU Frequency | 72 MHz |
| Internal Flash Memory | 512 KB |
| Architecture | 16-bit/32-bit |
| Ethernet Interface | Integrated Ethernet |
| CAN Interface | Integrated CAN |
| LCD Interface | Integrated LCD controller |
| USB Interface | USB 2.0 device, host, and OTG |
| External Memory Interface | Integrated external memory interface |
| 封裝 | 208-LQFP, 28 x 28 mm |
| 安裝類型 | Surface mount |
| GPIO Count | 64 GPIO pins connected to the Vector Interrupt Controller |
| Interrupt Controller | Hardware Vector Interrupt Controller (VIC) |
LPC2478FBD208K 208-lqfp, 28 x 28 mm 腳位配置指南
LPC2478FBD208K（208-lqfp, 28 x 28 mm 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： LPC2478FBD208K.
請參閱 資料表 以查看完整腳位配置。
典型應用
LPC2478FBD208K 適用於 6 應用s: Industrial Ethernet Control, CAN-Connected Industrial Equipment, LCD Human-Machine Interface, USB-to-Ethernet Gateway, Medical and Diagnostic Equipment, USB Host Data-Acquisition Unit.
Industrial Ethernet Control
The LPC2478FBD208K fits industrial Ethernet controllers that combine real-time local control with network communication. Its 72 MHz ARM7TDMI-S core can service protocol and control tasks, while 512 KB flash stores application firmware, configuration, and network parameters. The integrated Ethernet controller removes the need for a separate network interface, and the external memory interface provides an expansion path for larger data structures. Sixty-four GPIO pins connected to the hardware Vector Interrupt Controller allow external alarms, interlocks, and status signals to generate edge-triggered interrupts.
推薦
CAN-Connected Industrial Equipment
The LPC2478FBD208K is appropriate for CAN-connected machinery, test systems, and production equipment requiring both bus communications and local real-time control. The 72 MHz processor supports responsive control loops, the 512 KB flash provides space for firmware and diagnostics, and the integrated CAN controller reduces the component count of a CAN node. Its 64 GPIO connections can handle discrete sensors, actuators, and fault signals through the Vector Interrupt Controller, while Ethernet can provide a separate path for supervisory communication.
推薦
LCD Human-Machine Interface
The LPC2478FBD208K supports LCD-based operator panels by combining an integrated LCD controller with a 72 MHz processing core and 512 KB flash. The display interface reduces the need for an external graphics controller, while the remaining communications peripherals allow the panel to connect to sensors, USB equipment, and Ethernet-hosted supervisory systems. The external memory interface can extend working storage when screen assets or logging data require more capacity.
推薦
USB-to-Ethernet Gateway
The LPC2478FBD208K is well suited to USB-to-Ethernet gateways because it combines USB 2.0 device, host, and OTG operation with an Ethernet controller in one microcontroller. The ARM7TDMI-S core at 72 MHz can support protocol conversion and device-management tasks, while 512 KB flash accommodates gateway firmware and configuration data. Its external memory interface offers additional storage or peripheral expansion when buffering requirements exceed internal resources, and the LCD interface can support a local diagnostic or status display.
推薦
Medical and Diagnostic Equipment
The NXP LPC2478FBD208K can serve connected medical or diagnostic equipment where a high-performance 32-bit core, multiple communication interfaces, and extensive pin connectivity are useful. Ethernet supports networked monitoring, USB supports service interfaces and portable equipment, and CAN supports reliable connections to distributed modules. The 512 KB flash supports embedded application code, while 64 interrupt-connected GPIO pins provide flexibility for sensors and control signals. Medical-system qualification and safety validation must be completed independently for the finished product.
推薦
USB Host Data-Acquisition Unit
The LPC2478FBD208K can act as the central controller in a USB host data-acquisition unit because the integrated USB interface supports host operation as well as device and OTG modes. Its 72 MHz ARM7TDMI-S core handles acquisition control and data movement, while 512 KB flash stores firmware and configuration. CAN and Ethernet add optional connectivity to test systems or remote monitoring stations, and the external memory interface allows additional buffering or peripheral expansion when acquisition volume exceeds the internal memory resources.
推薦
推薦產品摘要
工程參考資料，適用於 LPC2478FBD208K — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | LPC2478FBD208 | LPC2470FBD208 | LPC2420FBD208 | LPC2468FBD208 | LPC2458FBD208 |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 208-LQFP (28 x 28 mm) | 208-LQFP (28 x 28 mm) - same | 208-LQFP (28 x 28 mm) - same | 208-LQFP (28 x 28 mm) - same | 208-LQFP (28 x 28 mm) - same | 208-LQFP (28 x 28 mm) - same |
主要差異化特點
- Broader integrated communications set (對比LPC2420FBD208)
- Native 72 MHz processing (對比LPC2470FBD208)
- USB device, host, and OTG integration (對比LPC2458FBD208)
設計說明
Route the Ethernet, USB, external-memory, and LCD interfaces according to the NXP reference layout and keep continuous ground references beneath high-speed traces. Place decoupling and bulk-supply capacitors at their associated power pins with short return paths. The 208-LQFP footprint provides fine pitch, so inspect pad geometry and solder bridging during assembly.
Design the power tree around every voltage domain identified in the manufacturer datasheet, including core, I/O, analog, and peripheral supplies. Check current demand at 72 MHz before selecting regulators and copper area. Keep switching-regulator loops away from Ethernet magnetics, USB routing, LCD signals, and the ARM7TDMI-S clock network.
Use continuous reference planes, controlled-length clock routing, and the manufacturer's recommended termination for Ethernet, USB, external-memory, and LCD interfaces. Keep the 72 MHz clock path short and isolate it from noisy inputs. Validate timing and signal margins in the assembled design because the integrated interfaces create several adjacent high-speed routing challenges in the 208-LQFP footprint.
Do not treat a shared package as proof of drop-in compatibility. Before substituting another LPC2400-family device, compare pin multiplexing, supply pins, peripheral functions, clock sources, memory mapping, and startup behavior. The target's combination of Ethernet, CAN, LCD, three USB operating modes, and external memory must all remain functionally valid on the replacement.
合規資訊
Compliance requirements and product-specific environmental qualifications should be confirmed from the current manufacturer documentation before production use.
