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NXP Semiconductors LPC2468FBD208K
- Part No.:
- LPC2468FBD208K
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 208-LQFP
- Datasheet:
-
LPC2468FBD208K.pdf
- Description:
- IC MCU 16/32B 512KB FLSH 208LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:112
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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 AHB buses, and integrated 10/100 Ethernet MAC with MII/RMII. It serves as a communication gateway controller in industrial protocol conversion systems.
For engineers reviewing the LPC2468FBD208 datasheet, LPC2468FBD208 pinout, LPC2468FBD208 application, or LPC2468FBD208 equivalent, key selection criteria include Ethernet+USB+CAN coexistence, 160 GPIO with VIC-interrupt capability, 10-bit ADC/DAC, external memory interface support, and LQFP208 package compatibility for high-pin-count embedded control designs.
Technical Context
The LPC2468FBD208 implements an ARM7TDMI-S core with JTAG and embedded trace debug interfaces, executing both 32-bit ARM and 16-bit Thumb instructions to balance performance and code density. Its dual AHB architecture enables concurrent Ethernet DMA, USB DMA, and flash execution without bus contention.
Peripheral integration includes a full-featured USB 2.0 device/host/OTG controller with on-chip PHY and 4 kB endpoint RAM, two CAN 2.0B controllers, four UARTs with fractional baud rate generation, three I²C interfaces (one open-drain), two SSPs, SPI, I²S, SD/MMC, and a 10-bit ADC with 8-channel multiplexing - all accessible via configurable pin muxing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM7TDMI-S, 72 MHz max clock - delivers deterministic real-time control with legacy ARMv4T ISA compatibility. |
| Flash Memory | 512 kB on-chip flash with ISP/IAP - enables field firmware updates and runtime reprogramming without external tools. |
| SRAM | 98 kB total: 64 kB local bus SRAM + 16 kB Ethernet buffer + 16 kB GP/USB DMA + 2 kB RTC-backed SRAM - supports concurrent high-bandwidth peripherals. |
| Communication Interfaces | Ethernet MAC (MII/RMII), USB 2.0 device/host/OTG, 2× CAN, 4× UART, 3× I²C, 2× SSP, SPI, I²S, SD/MMC - enables multi-protocol gateway functionality. |
| Analog Peripherals | 10-bit ADC (8 channels), 10-bit DAC (1 channel) - provides sensor interfacing and analog output control without external converters. |
| Package | LQFP208 (28 × 28 × 1.4 mm) - standard surface-mount package with 208 leads for high I/O count and thermal reliability in industrial PCB layouts. |
| Power Supply | Single 3.3 V supply (3.0–3.6 V), four low-power modes - simplifies power design while supporting battery-backed RTC operation. |
Pinout & Package
Package: Plastic LQFP208 (SOT459-1), 28 mm × 28 mm × 1.4 mm body, 0.5 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]/RD1/TXD3/SDA1 | CAN1 RX / UART3 TX / I²C1 data | Multi-function pin enabling simultaneous CAN bus reception, serial transmission, and I²C slave communication on Port 0. |
| P1[0]/ENET_TXD0 | Ethernet transmit data bit 0 | Dedicated MII/RMII signal for 10/100 Mbps Ethernet physical layer interface - requires impedance-controlled routing. |
| P1[15]/ENET_REF_CLK/ENET_RX_CLK | Ethernet reference/receive clock | Provides timing reference for RMII (50 MHz) or MII (25 MHz) operation - critical for synchronous Ethernet frame capture. |
| P0[26]/AD0[3]/AOUT/RXD3 | ADC input 3 / DAC output / UART3 RX | Shared analog/digital resource allowing sensor input sampling, analog waveform generation, and serial command reception on one pin. |
| P0[29]/USB_D+1 & P0[30]/USB_D−1 | USB 2.0 full-speed differential pair | On-die USB transceiver pins requiring 90 Ω differential impedance and ESD protection - no external PHY needed for basic USB device mode. |
Key Features
| Feature | Design Value |
|---|---|
| Dual AHB bus architecture | Enables concurrent Ethernet DMA, USB DMA, and CPU instruction fetch from flash - eliminates bus arbitration delays in real-time gateways. |
| 160 GPIO with VIC interrupt mapping | 64 pins directly connected to Vector Interrupt Controller for edge-triggered wake-up - supports responsive I/O event handling in low-power states. |
| External Memory Controller (EMC) | Supports asynchronous SRAM/ROM/flash and SDR SDRAM - extends addressable memory beyond on-chip limits for protocol stack buffering. |
| RTC with 2 kB battery-backed SRAM | Maintains timekeeping and critical configuration data during main power loss - enables graceful recovery after brownout or shutdown. |
| Versatile peripheral clock gating | Individual dividers per peripheral reduce active power by 20–30 % - allows selective enablement of CAN, USB, or Ethernet based on operational mode. |
Applications
| Industrial Protocol Converter | Medical Device Gateway |
|---|---|
Use Scenario: Translating Modbus RTU over RS-485 to EtherNet/IP for PLC-to-SCADA connectivity in factory automation. IC Role / Device Role / Timing Role: Central protocol translation engine with real-time packet parsing, checksum validation, and timestamped frame forwarding. Use Value: Eliminates need for separate Ethernet and CAN/RS-485 interface ICs - reduces BOM cost and PCB area while ensuring deterministic latency under 100 µs. | Use Scenario: Aggregating patient vitals from multiple bedside monitors (via UART/I²C) and transmitting encrypted data to hospital EMR via Ethernet/USB. IC Role / Device Role / Timing Role: Secure data concentrator with isolated communication paths, RTC-stamped logging, and fail-safe watchdog supervision. Use Value: Integrates ADC, DAC, USB host, and Ethernet into single chip - meets IEC 60601-1 leakage current requirements and supports FDA Class II software validation. |
| Communications Base Station Controller | Embedded Network Appliance |
Use Scenario: Managing backhaul links between cellular small cells using CAN for local control and Ethernet for upstream aggregation. IC Role / Device Role / Timing Role: Dual-network coordinator with CAN message scheduling and Ethernet TCP/IP offload via hardware MAC. Use Value: Leverages dual AHB to sustain 40 Mbps Ethernet throughput while servicing CAN interrupts at 1 kHz - avoids CPU bottlenecks in edge infrastructure. | Use Scenario: Enabling remote firmware updates and diagnostics for smart grid meters via USB host (for flash drive) and Ethernet (for cloud sync). IC Role / Device Role / Timing Role: Field-serviceable node controller with IAP-capable flash, USB mass storage support, and secure boot verification. Use Value: Supports zero-touch provisioning using USB stick-based update bundles - eliminates need for JTAG programmers in deployed units. |
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 - lacks MII/RMII and external memory controller. | Suitable for CAN/USB-only edge nodes without LAN connectivity or external memory expansion needs. | Select when Ethernet and SDRAM support are unnecessary and board space is constrained. |
| LPC1769FBD208 | Cortex-M3 core, 128 kB flash, 64 kB SRAM, Ethernet MAC, USB OTG, but no DAC and only 8-channel 12-bit ADC. | Better for compute-intensive tasks (e.g., motor control algorithms), weaker analog I/O capability than LPC2468FBD208. | Choose for higher CPU performance and modern toolchain support where DAC and dual CAN are non-critical. |
Compared with LPC2368FBD100, LPC2468FBD208 adds Ethernet, larger memory, and SDRAM support for gateway roles; compared with LPC1769FBD208, it retains DAC and richer analog I/O but trades Cortex-M3 efficiency for ARM7 determinism and mature ecosystem support.
Availability
LPC2468FBD208 is available at Aetrix Electronics and suitable for industrial protocol converters, medical data gateways, and embedded network appliances requiring stable component supply across extended 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 specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The LPC2400 series, including LPC2468FBD208, was designed specifically for high-integration communication gateway applications requiring Ethernet, USB, CAN, and rich analog/mixed-signal capabilities in a single ARM7-based SoC.
FAQ
What is the maximum system clock frequency supported by the LPC2468FBD208?
The LPC2468FBD208 supports a maximum system clock frequency of 72 MHz, achieved via its on-chip PLL that can be driven by the main oscillator, internal 4 MHz RC oscillator, or RTC oscillator. This frequency applies to CPU execution, peripheral clocks, and flash accelerator operation - enabling full-speed instruction fetch from 512 kB on-chip flash memory.
Does the LPC2468FBD208 include an integrated USB PHY?
Yes, the LPC2468FBD208 integrates a full-speed USB 2.0 PHY for both device and host/OTG operation. This eliminates the need for an external transceiver when implementing USB connectivity, and the 4 kB on-chip endpoint RAM supports up to 16 endpoints for complex descriptor configurations in LPC2468FBD208-based designs.
How many independent CAN controllers does the LPC2468FBD208 feature?
The LPC2468FBD208 features two independent Controller Area Network (CAN) 2.0B controllers, each with dedicated message objects and acceptance filtering. These CAN modules operate concurrently with Ethernet and USB traffic thanks to the dual AHB bus architecture, making LPC2468FBD208 suitable for automotive diagnostic gateways and industrial fieldbus bridges.
What type of external memory interface does the LPC2468FBD208 support?
The LPC2468FBD208 includes a dedicated External Memory Controller (EMC) supporting asynchronous static devices (SRAM, ROM, NOR flash) and synchronous dynamic memory (single-data-rate SDRAM). The EMC provides programmable timing parameters and bank addressing - enabling LPC2468FBD208 to interface with up to 64 MB of external SDRAM for protocol stack buffering or display frame buffers.
Is the LPC2468FBD208 pin-compatible with other members of the LPC2400 family?
The LPC2468FBD208 shares the same LQFP208 package and core pinout with LPC2478FBD208, but differs in flash size and peripheral enablement. However, it is not pin-compatible with LPC2368FBD100 (100-pin) or LPC2468FET208 (TFBGA208), as package type and ball/pad layout differ - PCB layout must be verified against the specific LPC2468FBD208 pin allocation table.
LPC2468FBD208K 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, 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:
LPC2468FBD208K FAQ
1.How can I place an order for LPC2468FBD208K through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC2468FBD208K 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 LPC2468FBD208K reliable?
The price and inventory of LPC2468FBD208K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC2468FBD208K is usually 5 days.
3.What payment methods are accepted for LPC2468FBD208K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC2468FBD208K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC2468FBD208K?
LPC2468FBD208K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC2468FBD208K 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 LPC2468FBD208K?
For technical support, including LPC2468FBD208K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC2468FBD208K requirements.
6.How does Aetrix verify that LPC2468FBD208K is sourced from the original manufacturer or authorized distributors?
All LPC2468FBD208K 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 LPC2468FBD208K meets industry standards.
7.What is the process for return or replacement of LPC2468FBD208K?
All LPC2468FBD208K units undergo pre-shipment inspection (PSI). If there is an issue with LPC2468FBD208K, 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 LPC2468FBD208K part is unused and in its original packaging.
Return procedure for LPC2468FBD208K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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