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NXP Semiconductors LPC2478FBD208K
- Part No.:
- LPC2478FBD208K
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 208-LQFP
- Datasheet:
-
LPC2478FBD208K.pdf
- Description:
- IC MCU 16/32B 512KB FLSH 208LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,645
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Product details
Overview
LPC2478FBD208K from NXP Semiconductors is a 32-bit ARM7TDMI-S microcontroller operating at up to 72 MHz, featuring 512 kB flash, 98 kB SRAM (including 16 kB Ethernet RAM and 2 kB RTC-powered SRAM), integrated LCD controller supporting up to 1024×768 TFT/STN displays, dual CAN, USB 2.0 full-speed device/host/OTG, 10/100 Ethernet MAC with MII/RMII, and 160 GPIO pins. It targets industrial control and medical systems requiring high-integration real-time I/O and graphics.
For engineers reviewing the LPC2478FBD208K datasheet, LPC2478FBD208K pinout, LPC2478FBD208K application, or LPC2478FBD208K equivalent, key selection considerations include its LQFP208 package, dual AHB bus architecture enabling concurrent Ethernet/USB/flash execution, 10-bit ADC/DAC, LCD DMA controller, and support for power-down wake-up via CAN, USB, or RTC interrupts.
Technical Context
The LPC2478FBD208K implements a dual Advanced High-performance Bus (AHB) system-AHB1 for CPU/flash/SRAM and AHB2 for Ethernet/USB/LCD-eliminating bus contention during simultaneous high-bandwidth peripheral access. Its ARM7TDMI-S core executes instructions from flash at 72 MHz using a 128-bit wide interface and memory accelerator.
Peripheral integration includes dedicated DMA controllers for Ethernet, USB, LCD, and GPDMA supporting SSP/I2S/SD/MMC; a Vector Interrupt Controller (VIC) servicing up to 32 vectored interrupts with 64 GPIO lines mapped to edge-triggered external interrupt sources; and independent power domains with per-peripheral clock dividers enabling 20–30% active power reduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM7TDMI-S, 32-bit RISC, executes 32-bit ARM or 16-bit Thumb instructions at up to 72 MHz. |
| Flash Memory | 512 kB on-chip flash with ISP/IAP support; accessed via 128-bit interface and accelerator for zero-wait-state 72 MHz execution. |
| SRAM | 98 kB total: 64 kB local SRAM (ARM bus), 16 kB Ethernet SRAM, 16 kB general-purpose DMA/USB SRAM, 2 kB RTC battery-backed SRAM. |
| Display Interface | LCD controller supporting STN/TFT panels up to 1024×768 pixels and 24-bit true-color mode, with dedicated DMA engine. |
| Communication Peripherals | Dual CAN 2.0B controllers, USB 2.0 full-speed device/host/OTG (4 kB endpoint RAM), 10/100 Ethernet MAC (MII/RMII), four UARTs, three I²C, two SSP, SPI, I²S, SD/MMC. |
| Analog Peripherals | 10-bit ADC with 8-channel multiplexing, 10-bit DAC output (AOUT), RTC with separate power domain and alarm. |
| Power & Packaging | Single 3.3 V supply (3.0–3.6 V), four low-power modes (idle/sleep/power-down/deep power-down); LQFP208 package (28×28×1.4 mm). |
Pinout & Package
LQFP208 package (SOT459-1): plastic low-profile quad flat package with 208 leads, body size 28 × 28 × 1.4 mm, standard 0.5 mm lead pitch, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]/RD1/TXD3/SDA1 | CAN1 RX / UART3 TX / I²C1 data | Multi-function pin supporting CAN bus reception, UART3 transmission, and bidirectional I²C1 data transfer (non-open-drain). |
| P1[0]/ENET_TXD0 | Ethernet transmit data bit 0 | Drives bit 0 of parallel MII/RMII Ethernet transmit data bus; requires external PHY interface. |
| P1[9]/ENET_RXD0 | Ethernet receive data bit 0 | Receives bit 0 of parallel MII/RMII Ethernet receive data bus; synchronous to ENET_RX_CLK. |
| P0[26]/AD0[3]/AOUT/RXD3 | ADC input 3 / DAC output / UART3 RX | Simultaneous analog input (10-bit ADC), analog output (10-bit DAC on AOUT), and UART3 receive function. |
| P0[27]/SDA0 | I²C0 data line | Open-drain bidirectional I²C0 data line compliant with I²C-bus electrical specifications. |
Key Features
| Feature | Design Value |
|---|---|
| Dual AHB bus architecture | Enables concurrent Ethernet DMA, USB DMA, and CPU instruction fetch from flash without bus arbitration delay. |
| Integrated LCD controller with DMA | Offloads CPU during display updates; supports programmable resolution, pixel clock, and 24-bit color depth for embedded HMI. |
| RTC with 2 kB battery-backed SRAM | Maintains timekeeping and critical data across main power loss using VBAT supply; enables tamper-resistant logging. |
| Four low-power operating modes | Reduces system power by disabling clocks/peripherals selectively; deep power-down draws <10 µA while retaining RTC and 2 kB SRAM. |
| Versatile pin function selection | Each GPIO supports multiple peripheral functions via Pin Connect Block; allows flexible PCB routing and feature reuse. |
Applications
| Industrial Control | Medical Systems |
|---|---|
Use Scenario: Programmable logic controller (PLC) with Ethernet-based fieldbus communication and local HMI. IC Role / Device Role / Timing Role: Central controller executing real-time I/O scanning, protocol stack processing (CAN/Ethernet), and driving monochrome STN LCD. Use Value: Dual AHB buses ensure deterministic response to fieldbus events while updating display; 160 GPIO enable direct sensor/actuator interfacing. | Use Scenario: Portable patient monitor with ECG waveform display, USB data export, and battery-backed event logging. IC Role / Device Role / Timing Role: Main system MCU managing analog front-end ADC sampling, LCD rendering, USB mass storage, and RTC-timestamped alarms. Use Value: Integrated 10-bit ADC + DAC + LCD controller eliminates external components; 2 kB RTC SRAM preserves critical logs during power loss. |
| Point-of-Sale (POS) | Portable Electronics |
Use Scenario: Touchscreen POS terminal with Ethernet backhaul, USB peripheral support (printer/scanner), and secure transaction logging. IC Role / Device Role / Timing Role: Host processor running embedded OS, handling payment encryption, multi-interface I/O, and graphical UI rendering. Use Value: USB OTG enables host-mode printer control and device-mode firmware updates; Ethernet MAC provides reliable network connectivity. | Use Scenario: Handheld test instrument with battery operation, LCD display, serial diagnostics, and data storage via SD card. IC Role / Device Role / Timing Role: Low-power system controller managing sleep/wake cycles, SD/MMC file I/O, UART debug interface, and LCD refresh. Use Value: Four power modes and per-peripheral clock gating extend battery life; SD/MMC interface enables field-upgradable firmware and data capture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC2378FBD100 | 100-pin LQFP, no Ethernet MAC, 512 kB flash, 98 kB SRAM, same ARM7 core and peripherals except Ethernet/LCD. | Suitable for cost-sensitive designs omitting Ethernet and high-resolution display requirements. | Select when Ethernet and LCD are unnecessary; smaller footprint and lower BOM cost. |
| LPC2468FBD208 | Same LQFP208 package and pinout, but 256 kB flash, identical peripheral set including Ethernet, LCD, USB, CAN, and memory map. | Drop-in replacement where reduced flash capacity is acceptable and legacy board layout must be preserved. | Choose for flash-constrained applications needing identical packaging and peripheral compatibility. |
Compared with LPC2478FBD208K, LPC2378FBD100 removes Ethernet and LCD to reduce size/cost, while LPC2468FBD208 retains full pin compatibility but halves flash-making both viable alternatives depending on whether connectivity or code space is the primary constraint.
Availability
LPC2478FBD208K is available at Aetrix Electronics and suitable for industrial control, medical systems, Point-of-Sale (POS) equipment, and portable electronics requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for LPC2478FBD208K includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The LPC2400 series-including LPC2478FBD208K-is designed for high-integration embedded applications demanding rich peripheral sets, real-time responsiveness, and low-power operation in resource-constrained environments.
FAQ
What is the maximum operating frequency of the LPC2478FBD208K?
The LPC2478FBD208K operates at a maximum system clock frequency of 72 MHz. This is achieved using the on-chip PLL, which can be driven by the internal 4 MHz RC oscillator (trimmed to ±1%), an external crystal (1–25 MHz), or the RTC oscillator. The 128-bit flash interface and accelerator enable zero-wait-state execution at this rate.
Does the LPC2478FBD208K support USB On-The-Go functionality?
Yes, the LPC2478FBD208K integrates a USB 2.0 full-speed device/host/OTG controller with 4 kB of on-chip endpoint RAM and an embedded PHY. It supports all three operational modes-device, host, and OTG-with hardware-level session request protocol (SRP) and host negotiation protocol (HNP) support as defined in the USB OTG specification.
How many CAN interfaces does the LPC2478FBD208K provide, and what version do they support?
The LPC2478FBD208K provides two Controller Area Network (CAN) channels, both compliant with the CAN 2.0B protocol specification. Each channel supports full CAN message filtering, acceptance masking, and FIFO buffering, enabling robust automotive and industrial fieldbus communication without external transceivers.
What type of LCD display interfaces does the LPC2478FBD208K support?
The LPC2478FBD208K's integrated LCD controller supports both Super-Twisted Nematic (STN) and Thin-Film Transistor (TFT) displays, with programmable resolution up to 1024×768 pixels and 24-bit true-color output. It includes dedicated DMA, programmable pixel clock, and support for passive/active matrix panels with variable scan rates.
Is the LPC2478FBD208K pin-compatible with other members of the LPC2400 family?
The LPC2478FBD208K shares the LQFP208 package and pinout with the LPC2468FBD208, enabling direct substitution where flash size reduction is acceptable. However, it is not pin-compatible with TFBGA208 variants (e.g., LPC2478FET208) or smaller packages like LQFP100, due to differing ball/pad layouts and signal assignments.
LPC2478FBD208K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 208-LQFP
- Series:
- LPC2400
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM7®
- Core Size:
- 16/32-Bit
- Speed:
- 72MHz
- Connectivity:
- CANbus, EBI/EMI, Ethernet, I2C, Microwire, Memory Card, SPI, SSI, SSP, UART/USART, USB OTG
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, LCD, POR, PWM, WDT
- Number of I/O:
- 160
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 98K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 3.6V
- Data Converters:
- A/D 8x10b; D/A 1x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LPC2478FBD208K FAQ
1.How can I place an order for LPC2478FBD208K through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC2478FBD208K on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LPC2478FBD208K reliable?
The price and inventory of LPC2478FBD208K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC2478FBD208K is usually 5 days.
3.What payment methods are accepted for LPC2478FBD208K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC2478FBD208K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC2478FBD208K?
LPC2478FBD208K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC2478FBD208K order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LPC2478FBD208K?
For technical support, including LPC2478FBD208K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC2478FBD208K requirements.
6.How does Aetrix verify that LPC2478FBD208K is sourced from the original manufacturer or authorized distributors?
All LPC2478FBD208K products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LPC2478FBD208K meets industry standards.
7.What is the process for return or replacement of LPC2478FBD208K?
All LPC2478FBD208K units undergo pre-shipment inspection (PSI). If there is an issue with LPC2478FBD208K, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LPC2478FBD208K part is unused and in its original packaging.
Return procedure for LPC2478FBD208K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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