LPC2468FBD208,551 - ARM7 MCU 72MHz 512KB Flash | NXP
MPN: LPC2468FBD208551 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $9.8 | $980.00 |
| 500 | $8.75 | $4,375.00 |
| 1,000 | $7.9 | $7,900.00 |
LPC2468FBD208551 Overview
A microcontroller (MCU) is a complete computer-on-a-chip that integrates a processor core, program memory, data memory, and peripherals in a single package, forming the core of embedded control systems. Within the semiconductor hierarchy, the LPC2468 belongs to the Arm7TDMI-S-based microcontroller family, which sits above discrete processors in integration level and below modern Cortex-M cores in power efficiency, making it a workhorse for legacy and industrial embedded designs.
Key differentiating features include the 128-bit-wide flash memory interface with accelerator architecture that lets the 72 MHz CPU execute code from flash with minimal stall cycles, and a rich peripheral set: a 10/100 Ethernet MAC with dedicated DMA, two CAN 2.0B controllers, full-speed USB 2.0 device/host/OTG, an external memory controller supporting SRAM, NOR flash, and SDRAM, multiple UARTs, SPI, I2C, I2S, a 10-bit ADC, and a motor-control PWM block.
Technically, the LPC2468 combines the Arm7TDMI-S CPU with real-time debug interfaces including JTAG and embedded trace (ETM), enabling non-intrusive debugging on complex designs. In-system programming (ISP) and in-application programming (IAP) allow firmware updates over UART, USB, Ethernet, or CAN without removing the chip from the board.
Typical applications include industrial networking gateways bridging Ethernet and CAN, motor and motion-control systems using the quadrature encoder and PWM peripherals, and general-purpose embedded controllers in factory automation and building control.
Design consideration: the core requires a single 3.0 V to 3.6 V supply; plan PCB decoupling with multiple 0.1 uF ceramics per supply pin group and account for the Ethernet PHY requirements in networked designs.
This page synthesizes distributor pricing, drop-in alternatives, design notes, and FAQ content not found in the NXP datasheet alone.
Drop-in alternatives for LPC2468FBD208551 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
LPC2468FBD208,551
✅ Drop-In📋 Reference alternative (not in catalog)
LPC2468FBD208K
✅ Drop-In📋 Reference alternative (not in catalog)
LPC2478FBD208
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
LPC2458FBD208
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
LPC2468FBD208551 Maximum Ratings & Electrical Characteristics
| Core Processor | ARM7TDMI-S |
| Core Size | 16/32-bit |
| Maximum Clock Speed | 72 MHz |
| Flash Memory | 512 KB (512K x 8) |
| Supply Voltage | 3 V to 3.6 V |
| Data Bus Width | 32 bit |
| I/O Ports | 160 |
| Ethernet | 10/100 Ethernet MAC |
| CAN Controllers | CAN 2.0B |
| USB Interface | USB 2.0 device/host/OTG |
| External Memory Interface | SRAM / NOR flash / SDRAM support |
| Programming Interface | ISP / IAP |
| Debug Interface | JTAG and embedded trace |
| Package | 208-LQFP (28 x 28 mm, 1.40 mm height) |
| Mounting Type | Surface Mount |
| Lifecycle Stage | Active |
LPC2468FBD208551 208-lqfp (28 x 28 mm, 1.40 mm height) Pin Configuration Guide
Pin configuration for LPC2468FBD208551 (208-lqfp (28 x 28 mm, 1.40 mm height) 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 LPC2468FBD208551.
Refer to the datasheet for full pin configuration.
Typical Applications
LPC2468FBD208551 is suitable for 6 applications: Industrial Ethernet-to-CAN Gateways, Motor and Motion Control, Embedded Data Loggers with USB Host, Building Automation Controllers, Test and Measurement Instruments, Automotive and Fleet Telematics.
Industrial Ethernet-to-CAN Gateways
The LPC2468FBD208,551 fits industrial gateways because it integrates both a 10/100 Ethernet MAC with dedicated DMA and two CAN 2.0B controllers on one 72 MHz ARM7TDMI-S die. In a typical gateway, the Ethernet MAC connects through an external MII PHY while the CAN controllers drive two transceivers, letting firmware bridge Modbus-TCP style traffic to CANopen or raw CAN frames without a second processor. The 512 kB flash holds a full TCP/IP stack, CAN stacks, and a web server for configuration, while ISP/IAP support enables field firmware updates over the network. The external memory controller can buffer packet queues in external SRAM, and the 160 available I/O handle digital I/O expansion at the cabinet level.
Recommended
Motor and Motion Control
The LPC2468 is well matched to motor control tasks: its peripheral set includes PWM outputs with motor-control features and quadrature encoder interface counting, driven from the 72 MHz ARM7TDMI-S core. In a servo drive or stepper controller, the MCU reads the encoder position, executes the control loop, and outputs PWM duty cycles while the 512 kB flash retains field-tunable firmware and parameter tables. The 10-bit ADC samples current and voltage feedback for closed-loop control, and CAN 2.0B links the drive into factory automation networks. Because the flash accelerator minimizes stall cycles at 72 MHz, deterministic control-loop timing is achievable without external memory, simplifying board design in compact drives.
Recommended
Embedded Data Loggers with USB Host
With USB 2.0 device/host/OTG support, the LPC2468 can act as a USB host reading USB flash drives in field data loggers, or as a USB device when downloading logged data to a PC. In a typical logger, sensor inputs feed the 10-bit ADC while timestamps come from the on-chip RTC, and records are written to a FAT-formatted USB stick through the host controller; alternatively data streams over Ethernet for remote collection. The 512 kB flash stores the filesystem, application logic, and configuration, and IAP allows safe firmware upgrades in the field. The 3.0-3.6 V single-supply operation simplifies battery-backed power design in portable instrumentation enclosures.
Recommended
Building Automation Controllers
Building automation nodes benefit from the LPC2468's communication density: Ethernet for backbone connectivity, dual CAN for device-level buses, and multiple UARTs for RS-485 style field devices. A typical controller uses the 72 MHz ARM7TDMI-S core to run a lightweight protocol stack, the 10-bit ADC for analog sensor inputs such as temperature and humidity channels, and the 160 GPIO to drive relays and read digital inputs. The 512 kB flash accommodates protocol stacks plus a web configuration UI served over Ethernet. ISP/IAP enables remote firmware rollouts across a building fleet, reducing maintenance truck rolls - a decisive advantage for large installations.
Recommended
Test and Measurement Instruments
Bench and portable instruments use the LPC2468 as a system controller: the JTAG and embedded trace interfaces accelerate firmware development of measurement logic, the external memory controller attaches fast SRAM for buffering, and USB 2.0 device mode provides PC connectivity for data transfer and instrument control. The 72 MHz core manages menus, display updates, and communication while dedicated acquisition hardware handles the signal path. Ethernet enables LXI-style remote instrument access on production floors. The 512 kB flash stores calibration tables and multiple instrument personalities, and IAP supports calibration-in-the-field updates. The 208-pin LQFP provides enough I/O to directly drive front-panel keypads, indicators, and display interfaces.
Recommended
Automotive and Fleet Telematics
Although the LPC2468FBD208,551 is an industrial-grade part, its dual CAN 2.0B controllers and Ethernet MAC make it a natural bridge in telematics gateways that aggregate CAN vehicle buses into IP-based cellular backhaul. Firmware reads J1939-style CAN traffic through the two CAN channels, buffers and formats it, and forwards it over Ethernet to a cellular modem module. The 512 kB flash holds the protocol stack and local buffer management, while IAP enables fleet-wide firmware updates. Debugging during vehicle trials is simplified by the on-chip JTAG and embedded trace, and the wide peripheral set leaves headroom for local sensor logging via the 10-bit ADC and UART-connected GNSS receivers.
Recommended
Recommended Products Summary
Engineering reference data for LPC2468FBD208551 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | LPC2468FBD208,551 (base code) | LPC2468FBD208K | LPC2478FBD208 | LPC2458FBD208 |
|---|---|---|---|---|---|
| Package | 208-LQFP (28 x 28 mm) | 208-LQFP - same | 208-LQFP - same | 208-LQFP - same | 208-LQFP - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core / Clock | ARM7TDMI-S, 72 MHz | ARM7TDMI-S, 72 MHz | ARM7TDMI-S, 72 MHz | ARM7TDMI-S, 72 MHz | ARM7TDMI-S, 72 MHz |
| Flash Memory | 512 kB | 512 kB | 512 kB | 576 kB | 256 kB |
| Ethernet | 10/100 Ethernet MAC | Yes | Yes | Yes | Yes |
| USB | USB 2.0 device/host/OTG | Yes (OTG) | Yes (OTG) | Yes (OTG) | Yes (OTG) |
| LCD Controller | No | No | No | Yes (TFT LCD) | No |
| External Memory Interface | SRAM / NOR / SDRAM | Yes | Yes | Yes | Yes |
Key Differentiators
- Best flash budget for the price in the 208-LQFP family (vs LPC2458FBD208)
- Lower cost for designs that do not need an LCD (vs LPC2478FBD208)
- Sourcing risk mitigation (vs LPC2468FBD208K)
Design Notes
The LPC2468 requires a single 3.0 V to 3.6 V core/I/O supply. With a 208-pin LQFP containing up to 160 I/O, place a 0.1 uF ceramic decoupling capacitor at every supply pin pair plus at least one bulk 10 uF per supply domain. Estimated: with dozens of GPIO toggling, transient supply current spikes can reach the hundreds of milliamps range, so keep the power plane low impedance. Verify the Ethernet PHY supply requirements separately - many 3.3 V PHYs need an isolated 1.8 V or 2.5 V core rail with its own filtering.
The Ethernet MAC requires an external PHY connected via MII/RMII signals; route these traces as short matched groups and keep them away from CAN and high-current motor PWM lines. The 128-bit flash accelerator means code executes from on-chip flash, so no external program bus needs routing, freeing the external memory controller pins for SDRAM buffering where used. Use a solid ground plane under the MCU and PHY. Consult the NXP LPC2468 datasheet pin configuration chapter, as most pins are multiplexed across up to 160 GPIO functions.
Common pitfalls: (1) assuming the Ethernet port is complete on-chip - the MAC is integrated but an external PHY is mandatory. (2) Exceeding the 3.6 V maximum on I/O pins when interfacing 5 V legacy peripherals - level shifters are required. (3) Ignoring crystal oscillator loading: the 72 MHz operation derives from the on-chip PLL fed by an external crystal, so follow the datasheet's crystal and PLL configuration guidelines. (4) Forgetting the ETM/JTAG trace pins when planning debug access - leave test points or a connector footprint during layout.
Compliance Information
Compliance status not stated in the provided web data; verify RoHS/REACH status on the official NXP product page for LPC2468FBD208 before procurement.
