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NXP Semiconductors LPC2468FBD208,551
- Part No.:
- LPC2468FBD208,551
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 208-LQFP
- Datasheet:
-
LPC2468FBD208,551.pdf
- Description:
- IC MCU 16/32B 512KB FLSH 208LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,402
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Product details
Overview
LPC2468FBD208 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 buffer and 2 kB RTC-powered RAM), dual CAN channels, 10/100 Ethernet MAC with MII/RMII, USB 2.0 full-speed device/host/OTG controller, and 160 GPIO pins. It is deployed in industrial gateways requiring deterministic real-time communication and protocol bridging.
For engineers reviewing the LPC2468FBD208 datasheet, LPC2468FBD208 pinout, LPC2468FBD208 application, or LPC2468FBD208 equivalent, key selection criteria include Ethernet+USB+CAN coexistence, 72 MHz ARM7 real-time execution, 208-pin LQFP package compatibility, and support for ISP/IAP firmware updates in field-deployed systems.
Technical Context
The LPC2468FBD208 implements a dual Advanced High-performance Bus (AHB) architecture enabling concurrent Ethernet DMA, USB DMA, and flash-based program execution without bus contention. Its ARM7TDMI-S core supports both 32-bit ARM and 16-bit Thumb instruction sets, allowing sub-routine-level optimization for code density or performance.
Peripheral integration includes an Advanced Vectored Interrupt Controller (VIC) supporting 32 vectored interrupts, a General Purpose DMA controller accessible by SSP, I2S, and SD/MMC interfaces, and independent clock dividers per peripheral to reduce active power by 20–30%. The device operates from a single 3.3 V supply (3.0–3.6 V) with four low-power modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM7TDMI-S, 32-bit/16-bit Thumb, max 72 MHz - enables deterministic real-time control with legacy ARM7 toolchain compatibility. |
| Flash Memory | 512 kB on-chip flash with ISP/IAP - supports in-field firmware updates without external programmer. |
| SRAM | 98 kB total: 64 kB local bus SRAM + 16 kB Ethernet buffer + 16 kB GP/USB DMA + 2 kB RTC-backed - ensures zero-wait-state CPU access and dedicated buffers for high-throughput peripherals. |
| Communication Interfaces | Ethernet MAC (MII/RMII), USB 2.0 full-speed device/host/OTG, 4× UARTs, 2× CAN, 3× I²C, 2× SSP, SPI, I²S, SD/MMC - enables multi-protocol gateway design without external bridge ICs. |
| Analog Peripherals | 10-bit ADC (8-channel multiplexed), 10-bit DAC (1-channel AOUT) - provides sensor interface and analog output capability for closed-loop control. |
| Package | LQFP208 (28 × 28 × 1.4 mm, SOT459-1) - standard surface-mount package compatible with automated PCB assembly and thermal management for industrial ambient. |
| Operating Temperature | −40 °C to +85 °C - qualified for extended industrial environments including factory automation and medical equipment enclosures. |
Pinout & Package
LQFP208 package (SOT459-1), 28 mm × 28 mm body, 1.4 mm height, 0.5 mm lead pitch. Pin count: 208 leads. Thermal pad exposed on underside for enhanced heat dissipation in continuous operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]/RD1/TXD3/SDA1 | CAN1 RX / UART3 TX / I²C1 data | Multi-function pin supporting simultaneous CAN bus reception, serial debug output, and I²C slave communication on same physical trace. |
| P1[0]/ENET_TXD0 | Ethernet transmit data bit 0 | Part of 4-bit RMII/MII parallel data path; requires matched-length routing with P1[1]–P1[3] and ENET_TX_EN for signal integrity. |
| P1[15]/ENET_REF_CLK/ENET_RX_CLK | Ethernet reference/receive clock | Provides 50 MHz clock source for RMII (reference) or MII (receive); critical timing reference for synchronous Ethernet PHY interface. |
| P0[26]/AD0[3]/AOUT/RXD3 | ADC input 3 / DAC output / UART3 RX | Shared analog/digital function: AOUT delivers calibrated 0–3.3 V analog output; AD0[3] accepts 0–VREF sampled at ≤400 kSPS. |
| P0[29]/USB_D+1 & P0[30]/USB_D−1 | USB port 1 differential pair | Full-speed (12 Mbps) USB 2.0 differential signals; require 90 Ω controlled impedance, <15 mm length match, and ESD protection per USB-IF compliance. |
Key Features
| Feature | Design Value |
|---|---|
| Dual AHB bus architecture | Enables concurrent Ethernet DMA, USB DMA, and CPU flash execution-eliminates bus arbitration delays in protocol-converter applications. |
| On-chip 4 MHz RC oscillator (±1%) | Provides immediate system clock at power-up; usable as fallback clock when crystal fails-reduces BOM cost vs. external oscillator. |
| RTC power domain with 2 kB SRAM | Maintains critical configuration and time-stamped logs during main power-off-enables wake-on-event functionality without external backup battery. |
| Versatile pin function selection | Each GPIO supports multiple peripheral functions via Pin Connect Block register-maximizes peripheral utilization without pin conflicts in dense PCB layouts. |
| Brownout detect with dual thresholds | Generates interrupt at 2.7 V and forces reset at 2.5 V-prevents erratic operation during brownout while allowing graceful shutdown sequence. |
Applications
| Industrial Protocol Gateway | Medical Data Aggregator |
|---|---|
Use Scenario: Bridges Modbus RTU over RS-485 to EtherNet/IP over 10/100 Ethernet in PLC edge nodes. IC Role / Device Role / Timing Role: Central protocol translation engine with deterministic UART-to-Ethernet packet forwarding and timestamping via VIC-interrupt-driven timers. Use Value: Eliminates need for dual-CPU gateway architecture; 512 kB flash stores multiple protocol stacks; 16 kB Ethernet SRAM prevents packet loss at 100 Mbps line rate. | Use Scenario: Collects ECG, SpO₂, and temperature data from analog sensors and transmits securely via USB host to clinical PC. IC Role / Device Role / Timing Role: Real-time sensor acquisition hub using 10-bit ADC with 8-channel mux and synchronized USB bulk transfers via GPDMA. Use Value: On-chip 2 kB RTC SRAM retains patient ID and last vital reading during power interruption; USB OTG allows direct firmware update from clinical tablet. |
| Automated Test Equipment Controller | Building Management System Node |
Use Scenario: Controls relay banks, reads thermocouple inputs, and logs results to SD card via SD/MMC interface. IC Role / Device Role / Timing Role: Deterministic I/O controller with 160 GPIO, PWM outputs for solid-state relays, and SD card logging triggered by timer-match events. Use Value: Four independent 32-bit timers with capture/compare enable precise pulse-width control and event timestamping; EMC supports external NOR flash for test script storage. | Use Scenario: Integrates HVAC, lighting, and security subsystems via CAN bus and communicates status to central BMS server over Ethernet. IC Role / Device Role / Timing Role: Multi-interface concentrator managing two CAN channels (HVAC + lighting), Ethernet uplink, and local I²C sensor network. Use Value: Dual CAN controllers eliminate external CAN transceiver sharing; 3× I²C interfaces support daisy-chained temperature/humidity sensors without address conflict. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC2368FBD100 | 100-pin LQFP, no Ethernet MAC, 256 kB flash, 58 kB SRAM, single CAN | Suitable for cost-sensitive CAN-only nodes without Ethernet connectivity requirement | Select when Ethernet is unnecessary and PCB space/layout cost must be minimized. |
| LPC2478FBD208 | Same package and pinout; adds LCD controller, 12-bit ADC (8 ch), and 8 kB USB RAM | Required for HMI-enabled gateways needing local display and higher-resolution analog sensing | Drop-in replacement if LCD interface or enhanced ADC resolution is needed; identical footprint and software compatibility. |
Compared with LPC2468FBD208, LPC2368FBD100 reduces feature set and package size for simpler nodes, while LPC2478FBD208 extends capabilities with LCD and higher-resolution ADC-both maintain identical ARM7TDMI-S architecture and toolchain compatibility.
Availability
LPC2468FBD208 is available at Aetrix Electronics and suitable for industrial protocol gateways, medical data aggregators, and building management system nodes requiring stable component supply across long product lifecycles.
Supply support for LPC2468FBD208 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 leader focused on secure connectivity solutions for automotive, industrial, and IoT markets.
The LPC2400 series targets high-integration industrial microcontrollers with emphasis on multi-protocol communication, real-time determinism, and robustness in harsh environments-LPC2468FBD208 exemplifies this with its Ethernet+USB+CAN+ADC+DAC convergence.
FAQ
What is the maximum operating frequency of the LPC2468FBD208?
The LPC2468FBD208 operates at a maximum system clock frequency of 72 MHz, achieved via its on-chip PLL driven by the main oscillator, internal RC oscillator, or RTC oscillator. This frequency applies to the ARM7TDMI-S core and all AHB peripherals. Flash accelerator architecture enables zero-wait-state execution at this rate, ensuring deterministic real-time performance critical for industrial control loops and protocol timing constraints in the LPC2468FBD208.
Does the LPC2468FBD208 support in-system programming (ISP)?
Yes, the LPC2468FBD208 supports In-System Programming (ISP) via UART0, UART1, or USB, allowing firmware updates without removing the device from the PCB. Its 512 kB on-chip flash includes dedicated ISP boot ROM and hardware flow control, enabling field upgrades of protocol stacks or security patches. This capability is integral to the LPC2468FBD208's design for long-lifecycle industrial deployments where remote maintenance is essential.
How many CAN interfaces does the LPC2468FBD208 integrate?
The LPC2468FBD208 integrates two independent Controller Area Network (CAN) 2.0B-compliant controllers, each with dedicated message objects and acceptance filtering. These CAN channels operate concurrently and can be assigned to separate physical transceivers, enabling dual-bus architectures-for example, one for vehicle subsystems and another for diagnostic access. This dual-CAN capability is a defining feature of the LPC2468FBD208 in industrial and automotive gateway applications.
What type of USB functionality does the LPC2468FBD208 provide?
The LPC2468FBD208 features a USB 2.0 full-speed (12 Mbps) device/host/OTG controller with integrated PHY and 4 kB endpoint RAM. It supports simultaneous device and host roles via OTG negotiation, enabling applications such as USB mass storage host mode (reading SD cards via USB adapter) or device mode (acting as CDC ACM serial port). The on-chip PHY eliminates external transceiver components, reducing BOM cost and board area in the LPC2468FBD208 design.
Is the LPC2468FBD208 pin-compatible with other members of the LPC2400 family?
The LPC2468FBD208 is pin-compatible with the LPC2478FBD208 in the LQFP208 package, sharing identical mechanical footprint, power pinout, and peripheral signal mapping. However, it is not pin-compatible with smaller packages (e.g., LPC2468FET208 TFBGA) or lower-pin-count variants (e.g., LPC2368FBD100). Designers migrating from LPC2468FBD208 to LPC2478FBD208 retain full hardware compatibility while gaining LCD and enhanced ADC features-confirming the LPC2468FBD208's role as a foundational member of the scalable LPC2400 platform.
LPC2468FBD208,551 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 208-LQFP
- Series:
- LPC2400
- Packaging:
- Tray
- Product Status:
- Discontinued at Digi-Key
- 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, 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:
LPC2468FBD208,551 FAQ
1.How can I place an order for LPC2468FBD208,551 through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC2468FBD208,551 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 LPC2468FBD208,551 reliable?
The price and inventory of LPC2468FBD208,551 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC2468FBD208,551 is usually 5 days.
3.What payment methods are accepted for LPC2468FBD208,551?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC2468FBD208,551 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC2468FBD208,551?
LPC2468FBD208,551 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC2468FBD208,551 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 LPC2468FBD208,551?
For technical support, including LPC2468FBD208,551 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC2468FBD208,551 requirements.
6.How does Aetrix verify that LPC2468FBD208,551 is sourced from the original manufacturer or authorized distributors?
All LPC2468FBD208,551 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 LPC2468FBD208,551 meets industry standards.
7.What is the process for return or replacement of LPC2468FBD208,551?
All LPC2468FBD208,551 units undergo pre-shipment inspection (PSI). If there is an issue with LPC2468FBD208,551, 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 LPC2468FBD208,551 part is unused and in its original packaging.
Return procedure for LPC2468FBD208,551:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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