LPC2468FBD208K - 72MHz ARM7 MCU with 512KB Flash | NXP
MPN: LPC2468FBD208K ✓ ActiveLPC2468FBD208K Overview
A microcontroller is a programmable semiconductor that integrates a CPU core, memory, and peripheral interfaces into a single device. The LPC2468 belongs to the ARM7-based LPC2400 family, combining real-time microcontroller operation with communications peripherals for industrial control, embedded networking, data acquisition, and human-interface equipment. Its architecture makes it suitable where deterministic embedded control and multiple communication standards are required on one board.
The principal features of the LPC2468FBD208K include 512 KB of high-speed flash, a 72 MHz ARM7TDMI-S core, and support for Ethernet, CAN, and USB 2.0. The flash accelerator uses a 128-bit-wide memory interface, while the CPU supports JTAG and embedded trace for real-time debug access. An external memory interface permits additional storage or peripheral interfacing when the internal resources are insufficient.
The 208-pin LQFP exposes the device's extensive communications and control peripherals while providing a larger package than smaller LPC2400-family members. This expanded connection set is useful when a design requires simultaneous network connectivity, industrial CAN communication, USB peripheral operation, and conventional digital I/O. The broad package also leaves more pins available for dedicated functions than compact 100-pin or 144-pin alternatives.
Typical applications include industrial Ethernet controllers, CAN-connected factory equipment, USB-to-serial and protocol-conversion equipment, embedded data loggers, laboratory instruments, and industrial gateways. The Ethernet and CAN interfaces are particularly useful for supervisory control and data-acquisition systems, while USB 2.0 support simplifies connection to host computers and service equipment. ISP and IAP capabilities support production programming and controlled firmware updates.
A critical design consideration is package and firmware compatibility. Board designers must preserve the 208-pin LQFP footprint, assign all supply and ground pins correctly, and confirm peripheral multiplexing before routing signals. Software development should use an ARM7TDMI-S-compatible toolchain and validate the intended ISP, JTAG, Ethernet, CAN, and USB paths on the final hardware. The manufacturer datasheet remains the controlling reference for pin assignments, electrical limits, and initialization requirements.
This page combines manufacturer specifications, verified distributor listings, practical interface-selection guidance, and a comparison of the LPC2468 with closely related NXP controllers. It helps engineers distinguish exact package variants from devices with different pin counts while focusing on the resources needed to design reliable embedded communications equipment.
Drop-in alternatives for LPC2468FBD208K — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with LPC2468FBD208K (same form factor and footprint) — differing in External Memory Interface.
LPC2468FBD208551
✅ Drop-InContact for price
View Datasheet →LPC2468FBD208K Maximum Ratings & Electrical Characteristics
| Product Type | Single-chip 16-bit/32-bit ARM7TDMI-S microcontroller |
| Maximum CPU Frequency | 72 MHz |
| On-Chip Flash Memory | 512 KB |
| Flash Memory Organization | 512K x 8 bits |
| CPU Architecture | ARM7TDMI-S |
| Instruction Width | 16-bit/32-bit |
| Ethernet Support | Yes |
| CAN Support | Yes |
| USB 2.0 Support | Device, host, and OTG |
| Programming Interfaces | ISP/IAP, JTAG, and embedded trace |
| External Memory Interface | Yes |
| Package Type | 208-LQFP |
| Package Dimensions | 28 mm x 28 mm |
| Mounting Type | Surface mount |
LPC2468FBD208K 28 mm x 28 mm Pin Configuration Guide
Pin configuration for LPC2468FBD208K (28 mm x 28 mm package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for LPC2468FBD208K.
Refer to the datasheet for full pin configuration.
Typical Applications
LPC2468FBD208K is suitable for 6 applications: Industrial Ethernet Gateway, CAN-Connected Factory Controller, USB-to-Industrial Protocol Bridge, Embedded Data Logger, Laboratory Test Instrument, Secure Network Appliance.
Industrial Ethernet Gateway
The LPC2468FBD208K fits an industrial Ethernet gateway because the NXP LPC2468 combines a 72 MHz ARM7TDMI-S processor, 512 KB of flash, and an Ethernet controller in a 208-LQFP package. The processor can handle protocol translation, local data processing, and supervisory logic while leaving CAN and USB resources available for equipment connectivity. Its 128-bit flash interface accelerates access to the on-chip 512 KB program memory, supporting responsive protocol stacks and firmware. The 208-pin package also provides more assignment options than smaller LPC2400 members, although every Ethernet signal must follow NXP's pin multiplexing and termination guidance. Use a separate Ethernet magnetics and protection implementation selected for the board's isolation, surge, and cabling environment.
Recommended
CAN-Connected Factory Controller
The LPC2468FBD208K is suitable for factory equipment that coordinates sensors and actuators over CAN while also providing Ethernet or USB management. Its 72 MHz ARM7TDMI-S core supports real-time control tasks, the 512 KB flash provides room for drivers and diagnostics, and the dedicated CAN controller reduces software overhead compared with a bit-banged interface. The 208-LQFP provides a broad set of pins for digital I/O, communications, and control signals, making it useful when the machine also requires USB service access. Firmware should configure the selected CAN bit rate and filter strategy, while the PCB must use the appropriate bus protection, common-mode handling, and termination topology specified for the installed transceiver and industrial environment.
Recommended
USB-to-Industrial Protocol Bridge
The LPC2468FBD208K can implement a USB-to-industrial-protocol bridge because USB 2.0 device, host, and OTG operation are integrated into the LPC2468 platform. At 72 MHz, the ARM7TDMI-S core can translate USB traffic while managing CAN or Ethernet data and maintaining protocol state. Its 512 KB of on-chip flash is useful for firmware images, descriptor data, and configuration tables without requiring external program memory for moderate applications. The 208-pin LQFP exposes communications and control signals for board-level implementation. Product developers must still add the correct USB data protection, connector, power-management, and routing arrangement, and must confirm enumeration behavior through the final host, operating system, and cable combination.
Recommended
Embedded Data Logger
The LPC2468FBD208K supports an embedded data logger that records sensor information locally and transfers it through Ethernet, CAN, or USB. The 512 KB flash provides code and nonvolatile storage space, while the external memory interface can extend storage when larger logs are required. A 72 MHz ARM7TDMI-S core leaves processing capacity for sampling, timestamping, filtering, and protocol framing. The device's 208-pin LQFP offers enough connections for digital sensors, status indicators, storage control, and multiple communications paths. Storage media must be selected to match the external memory interface requirements, and the firmware should include write endurance, data-integrity, and brownout-handling strategies appropriate to the logging duty cycle and environmental conditions.
Recommended
Laboratory Test Instrument
The LPC2468FBD208K can serve as the control processor in a laboratory instrument that combines acquisition, communication, and operator I/O. Its 72 MHz ARM7TDMI-S core supports deterministic control, the 512 KB flash accommodates instrument firmware, and the integrated Ethernet, CAN, and USB interfaces allow the instrument to communicate with test systems, service tools, and automated equipment. The 208-pin package provides a broad interface set for front-panel controls, displays, triggers, and analog front-end control signals. The debug support should be brought out for development and field diagnostics, while production firmware can use ISP or IAP for controlled upgrades. Analog measurement accuracy still depends on the external signal chain, reference design, grounding, and calibration rather than the microcontroller itself.
Recommended
Secure Network Appliance
The LPC2468FBD208K is applicable to compact network appliances that need Ethernet connectivity together with local control and optional CAN or USB service access. The 72 MHz ARM7TDMI-S core and 512 KB flash allow the controller to combine networking, configuration, diagnostics, and device management in one package. Its ISP/IAP and JTAG capabilities support development, validation, and controlled firmware maintenance, while the 208-LQFP provides access to a broad peripheral set. Security-sensitive deployments should add the necessary hardware root-of-trust, protected storage, authenticated update mechanism, and physical access controls according to the product threat model. The MCU's communication capability does not by itself provide encryption, secure boot, or production-level key protection.
Recommended
Recommended Products Summary
Engineering reference data for LPC2468FBD208K — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LPC2468FBD208 |
|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors |
| Package | 208-LQFP (28x28 mm) | 208-LQFP (28x28 mm) |
| CPU Core | ARM7TDMI-S | ARM7TDMI-S |
| Maximum CPU Frequency | 72 MHz | 72 MHz |
| On-Chip Flash Memory | 512 KB | 512 KB |
| Ethernet Support | Yes | Yes |
| CAN Support | Yes | Yes |
| USB 2.0 Support | Device, host, and OTG | Device, host, and OTG |
| Programming and Debug | ISP/IAP, JTAG, and embedded trace | ISP/IAP, JTAG, and embedded trace |
| External Memory Interface | Yes | Yes |
Key Differentiators
- Combines three wired communication technologies in one microcontroller (vs LPC2460FBD208,551)
- Provides a 512 KB high-speed flash resource with a 128-bit-wide interface (vs LPC2478FBD208,551)
- Supports programming, field updates, and real-time debugging through multiple interfaces (vs LPC2468FBD208)
Design Notes
Use the NXP LPC2468 208-LQFP symbol and land pattern directly in the PCB library, then cross-check every ball or pin assignment against the device pin-description table. This is especially important for Ethernet, CAN, USB, JTAG, and external-memory signals because alternate functions may occupy the same package positions. Preserve the exposed structure required by the selected 208-LQFP footprint, confirm pad dimensions against the current package drawing, and avoid improvising pin assignments from peripheral names alone.
Separate analog-sensitive references, Ethernet differential routing, USB differential routing, and high-speed external-memory paths according to their respective interface requirements. Ethernet and USB pairs should be routed with controlled geometry and continuous reference planes, while crystal and power-supply connections should remain short and surrounded by a quiet ground return. Although the MCU integrates several interfaces, it cannot compensate for poor topology, impedance discontinuities, or shared noisy return paths on the PCB.
Calculate local regulator dissipation from the actual input-to-output differential multiplied by the maximum branch current, then add margin for transient load and temperature. Place the required input, output, and decoupling capacitors at the pins indicated in the manufacturer application guidance, with the shortest possible supply-current loops. Do not consolidate decoupling paths across the package; high-current outputs and sensitive analog inputs should have independent return paths to minimize supply bounce and ground coupling.
The most common replacement error is treating another LPC2400-family controller as interchangeable merely because it uses an ARM7TDMI-S core and a 208-pin package. Confirm the exact orderable MPN, pin multiplexing, electrical limits, memory architecture, peripheral set, and operating qualification before releasing a substitution. LPC2468FBD144 is not a PCB drop-in alternative because its 144-pin package differs, and LPC2460- or LPC2478-family devices may provide different resources even when their package dimensions appear similar.
Compliance Information
The NXP LPC2468 product information and verified distributor listings do not provide explicit compliance statements in the captured content. Confirm RoHS, REACH, lead-free, halogen-free, conflict-minerals, and automotive qualification status against the current manufacturer product record before production release.
