LPC1778FBD144K - 120MHz Cortex-M3 MCU with Ethernet | NXP
MPN： LPC1778FBD144K ✓ 啟用中LPC1778FBD144K 概覽
An Arm Cortex-M3 microcontroller belongs to the microcontroller hierarchy: embedded processor > microcontroller > 32-bit MCU > Arm Cortex-M3 device. This architecture provides a deterministic execution environment with interrupt-driven peripherals while retaining low power consumption and broad ecosystem support. The LPC1778 is positioned for connected embedded designs requiring more communication interfaces than a basic microcontroller but fewer resources than a high-end application processor.
Key features include 512 kB of flash, 96 kB of data memory, Ethernet, USB 2.0 device, host, and OTG, an 8-channel DMA controller, five UARTs, two CAN channels, three SSP or SPI interfaces, three I2C interfaces, I2S support, and SD or MMC connectivity. An 8-channel 12-bit ADC and 10-bit DAC support mixed-signal measurement and output, while quadrature encoder inputs support motor and position-control applications.
The LPC1778 integrates multiple communications engines around the Cortex-M3 core. Ethernet and USB enable network-connected control equipment and USB peripherals, while CAN, UART, SPI, I2C, and I2S support industrial networking, sensor networks, audio paths, and external memory or display peripherals. DMA reduces CPU intervention for transfers between memory and high-bandwidth peripherals, improving responsiveness in data-acquisition and communications systems.
Typical applications include industrial Ethernet controllers, USB-to-serial or USB-to-field-bus gateways, audio interfaces, CAN-based vehicle or machine-control nodes, SD-card data loggers, motor-control systems, and compact industrial gateways. The 144-pin LQFP package exposes the broad peripheral complement without requiring the smallest possible package, simplifying PCB routing and inspection.
Designers should verify the exact pin multiplexing, clock configuration, power-supply requirements, decoupling values, and startup limits against the NXP datasheet before layout. Although the 120 MHz operating frequency provides strong processing headroom, sustained Ethernet, USB, and DMA activity should be evaluated for interrupt latency, thermal conditions, and continuous bus bandwidth rather than inferred from peak clock speed alone.
This page consolidates verified manufacturer and distributor information with package-specific alternatives, interface-focused comparisons, and practical selection guidance. It is designed to help engineers determine whether the LPC1778FBD144K provides the required memory, networking, and mixed-signal resources without confusing it with pin-compatible but feature-incompatible microcontroller options.
直接替換替代品，適用於 LPC1778FBD144K — 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： LPC1778FBD144K （相同外形與佔位） — 差異在於 ADC, Package.
LPC1788FBD144
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →LPC1798FBD144
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
LPC1776FBD144
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
LPC1768FBD144
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
LPC1758FBD144
✅ 直接替換📋 參考替代品（不在目錄中）
LPC1778FBD144K 最大額定值與電氣特性
| CPU Core | Arm Cortex-M3, 32-bit |
| Maximum CPU Frequency | 120 MHz |
| Embedded Flash Memory | 512 kB |
| Data Memory | 96 kB |
| Ethernet Interface | Integrated Ethernet |
| USB Interface | USB 2.0 device, host, and OTG |
| DMA Controller | 8 channels |
| UART Interfaces | 5 |
| CAN Interfaces | 2 channels |
| SSP or SPI Interfaces | 3 |
| I2C Interfaces | 3 |
| ADC | 8 channels, 12-bit |
| DAC | 10-bit |
| QEI Support | Yes |
| Storage Interface | SD and MMC |
| 封裝 | 144-pin LQFP |
| Nominal Supply Voltage | 3.3 V |
| Automotive Qualification | AEC-Q100 |
| 安裝類型 | Surface mount |
LPC1778FBD144K 144-pin lqfp 腳位配置指南
LPC1778FBD144K（144-pin lqfp 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： LPC1778FBD144K.
請參閱 資料表 以查看完整腳位配置。
典型應用
LPC1778FBD144K 適用於 6 應用s: Industrial Ethernet Gateway, USB-to-Field-Bus Gateway, CAN-Based Motor Controller, Industrial Audio Interface, SD-Card Data Logger, Embedded Measurement and Control Node.
Industrial Ethernet Gateway
The LPC1778FBD144K fits an industrial Ethernet gateway because its 120 MHz Cortex-M3 core provides processing headroom while the integrated Ethernet interface supports network communication. Five UARTs, two CAN channels, three I2C ports, three SSP/SPI interfaces, and an 8-channel DMA controller allow sensors, actuators, and service interfaces to be connected without excessive CPU polling. In a gateway, the MCU could translate Ethernet traffic to CAN or RS-485 while DMA manages high-volume packet movement. The 144-pin LQFP package also simplifies routing of Ethernet, serial, and external memory signals, although the external Ethernet PHY arrangement and exact signal mapping must be confirmed in the datasheet.
推薦
USB-to-Field-Bus Gateway
The LPC1778FBD144K is suitable for a USB-to-field-bus gateway because USB 2.0 device, host, and OTG capability can connect directly with a host or peripheral ecosystem. Its two CAN channels support industrial vehicle and machine protocols, while five UARTs provide bridge capacity for RS-232, RS-485, or service consoles. The 8-channel DMA controller can improve responsiveness when data moves among USB, CAN, UART, and memory. In this architecture, the 120 MHz core has sufficient headroom for protocol conversion and supervision, but USB enumeration, CAN timing, isolation, connector protection, and bus termination must be designed separately for the target system.
推薦
CAN-Based Motor Controller
The LPC1778FBD144K supports CAN-based motor control by combining a 120 MHz Cortex-M3 core, two CAN channels, QEI support, an 8-channel 12-bit ADC, and an 8-channel DMA controller. QEI inputs can support rotor-position feedback, while the ADC can monitor current, temperature, and analog sensor conditions. DMA is useful for transferring sampled or buffered data without consuming excessive CPU time. The LQFP-144 package exposes the required interface and control signals more conveniently than a compact leadless package. Exact timer, PWM, ADC trigger, QEI, and pin-mux assignments must be confirmed against the NXP documentation for the chosen board revision.
推薦
Industrial Audio Interface
The LPC1778FBD144K can serve as the control processor for an industrial audio interface because it provides I2S, SSP/SPI, multiple UARTs, a 12-bit ADC, a 10-bit DAC, and extensive DMA support. I2S or SSP can connect to a digital codec, while the ADC and DAC provide additional analog monitoring or line-level conversion functions. The 120 MHz Cortex-M3 core supports buffering and real-time control, and DMA can move audio blocks with lower CPU overhead than interrupt-driven transfers. In a design using external amplifiers and codecs, clock accuracy, codec interface mode, sample-rate support, analog grounding, and output filtering remain the principal considerations; the integrated converter resolution should not be assumed sufficient for every audio path.
推薦
SD-Card Data Logger
The LPC1778FBD144K fits an industrial data logger because its 512 kB flash and 96 kB SRAM support local buffering, while SD/MMC connectivity enables removable or solid-state storage. Five UARTs can accept sensors or service equipment, three I2C ports support low-speed sensors, and the 8-channel DMA controller helps transfer data blocks efficiently. The 120 MHz core can manage timestamps, filtering, status logging, and communications while storage writes are in progress. For a reliable implementation, use the supported SD/MMC electrical interface and verify bus width, card-detection pins, write endurance, filesystem requirements, and the datasheet's SD interface clock limits. Environmental robustness should also be addressed through the enclosure, power-loss protection, and data-integrity strategy.
推薦
Embedded Measurement and Control Node
The LPC1778FBD144K is appropriate for a distributed measurement and control node because its 8-channel 12-bit ADC can acquire multiple analog inputs and its 10-bit DAC can generate control or test signals. Two CAN channels support network distribution, three I2C ports connect close sensors, and three SSP/SPI ports can serve higher-speed converters, transceivers, or displays. At 120 MHz, the core can combine filtering, calibration, diagnostics, and protocol handling, while DMA reduces transfer overhead. A practical implementation must verify ADC reference accuracy, sample-and-hold suitability for the measured signals, DAC output range, analog-noise coupling, and the exact pin multiplexing. Galvanic isolation and robust external signal conditioning may be required outside the MCU itself.
推薦
推薦產品摘要
工程參考資料，適用於 LPC1778FBD144K — 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 | LPC1788FBD144 | LPC1798FBD144 | LPC1776FBD144 | LPC1768FBD144 | LPC1758FBD144 |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | LQFP-144 | LQFP-144 - same | LQFP-144 - same | LQFP-144 - same | LQFP-144 - same | LQFP-144 - same |
| CPU Core | Arm Cortex-M3, 32-bit | Arm Cortex-M3, 32-bit | Arm Cortex-M3, 32-bit | Arm Cortex-M3, 32-bit | Arm Cortex-M3, 32-bit | Arm Cortex-M3, 32-bit |
| Maximum CPU Frequency | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 100 MHz, 16.7% lower |
主要差異化特點
- Verified integrated networking and OTG support (對比LPC1758FBD144)
- Higher verified clock rate (對比LPC1758FBD144)
- Broader communications and acquisition resource mix (對比LPC1768FBD144)
- Integrated high-speed USB and Ethernet in one MCU (對比LPC1776FBD144)
設計說明
Design the 3.3 V supply path before assigning the MCU's 120 MHz operating mode. Place the manufacturer's required local decoupling capacitors directly at the supply and ground pins, keep the high-current and sensitive analog paths separate, and provide additional bulk capacitance where the USB, Ethernet, or SD/MMC load can create transients. Verify the exact voltage tolerance, current limits, power-up sequence, and startup behavior in the LPC1778 manufacturer datasheet rather than deriving limits from the distributor summary.
Preserve signal integrity around the 120 MHz Cortex-M3 core and its high-speed peripherals. Route clocks and communications lines on controlled layers, provide a continuous ground reference under interfaces, keep switching nodes away from analog inputs, and use short return paths for USB, Ethernet, SPI, and I2S. Because the LQFP-144 footprint exposes many pins, there is room to separate sensitive groups, but pin multiplexing must be resolved before routing because several balls can serve multiple functions.
Do not treat a matching LQFP-144 package as proof that another LPC17xx device is a drop-in replacement. Compare boot configuration pins, supply pins, ground pins, crystal or clock connections, reset behavior, USB, Ethernet, CAN, timer, ADC, and DMA assignments in the manufacturer pin tables. The LPC1758 alternative runs up to 100 MHz rather than 120 MHz and lacks the target's verified Ethernet feature, while other family members may differ in memory or peripheral availability.
Account for clock, reset, boot, and debug behavior in the first placement pass. Keep the main crystal and its load components close to the device, follow the reference connection and grounding guidance, and provide an accessible SWD or JTAG interface for production programming and diagnostics. For USB and Ethernet implementations, follow the relevant controller transceiver and magnetics guidance for controlled-impedance routing and isolation, because the MCU alone does not establish a compliant physical channel.
The 120 MHz clock and dense mixed-signal connectivity can increase board-level heat, particularly in enclosed systems with Ethernet, USB, and SD/MMC activity. Use the LQFP package's thermal land pattern and maximize nearby copper where electrical clearance permits, but follow the manufacturer's layout instructions rather than adding copper under nets that require isolation. Validate junction and ambient temperature in the final enclosure because the supplied web data does not provide the package thermal resistance or maximum junction temperature.
合規資訊
The verified Arrow listing identifies the LPC1778FBD144K as AEC-Q100 automotive qualified. The supplied comparison search references RoHS and REACH information but does not state their verified status, so those fields remain unknown.