NXP Semiconductors LPC2388FBD144,551

Overview

LPC2388FBD144 from NXP Semiconductors is a 32-bit ARM7TDMI-S microcontroller operating at up to 72 MHz, integrating 512 kB flash, 64 kB on-chip SRAM, dual CAN channels, 10/100 Ethernet MAC with RMII, USB 2.0 device/host/OTG, and 10-bit ADC/DAC. It serves as a high-integration communication gateway controller in industrial protocol converters and embedded networking systems.

For engineers reviewing the LPC2388FBD144 datasheet, LPC2388FBD144 pinout, LPC2388FBD144 application, or LPC2388FBD144 equivalent, key selection considerations include its dual AHB bus architecture enabling concurrent Ethernet DMA, USB DMA, and flash execution; 104 GPIO with edge/level interrupt support; and RMII Ethernet interface requiring minimal external components.

Technical Context

The LPC2388FBD144 implements an ARM7TDMI-S core with real-time emulation and a 128-bit wide memory interface, enabling full 32-bit instruction execution at 72 MHz. Its dual Advanced High-performance Bus (AHB) system isolates Ethernet and USB DMA traffic from CPU flash access, eliminating bus contention.

It integrates dedicated peripherals including a 10/100 Ethernet MAC with RMII PHY interface, USB 2.0 OTG controller with on-chip PHY and 4 kB endpoint RAM, two independent CAN 2.0B controllers, and three I²C interfaces - one open-drain and two standard - all accessible via configurable pin multiplexing.

Key Specifications

Pinout & Package

LPC2388FBD144 uses a 144-pin LQFP package (20 × 20 × 1.4 mm, SOT486-1) with exposed thermal pad. Pin functions are fully configurable via the Pin Connect Block, supporting multiple peripheral mappings per pin.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with LPC2478FBD208 and LPC1788FBD208, the LPC2388FBD144 uniquely balances CAN + Ethernet + USB OTG in a 144-pin footprint with proven ARM7 toolchain support - making it optimal for cost-sensitive, multi-protocol industrial gateways where CAN interoperability is mandatory.

Availability

LPC2388FBD144 is available at Aetrix Electronics and suitable for industrial protocol converters, medical data gateways, and embedded network controllers requiring stable component supply and long-term lifecycle assurance.

Supply support for LPC2388FBD144 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The LPC2300 series, including LPC2388FBD144, was designed specifically for high-throughput communication gateways requiring integrated Ethernet, USB, CAN, and real-time control in a single-chip solution.

FAQ

What is the maximum operating frequency of the LPC2388FBD144?

The LPC2388FBD144 operates at a maximum CPU clock frequency of 72 MHz, achieved via its on-chip PLL driven by the main oscillator, internal RC oscillator, or RTC oscillator. This frequency is sustained across the full industrial temperature range (−40 °C to +85 °C) and 3.0–3.6 V supply, with the 128-bit memory interface and accelerator architecture ensuring full 32-bit instruction throughput without throttling. The LPC2388FBD144 does not support overclocking beyond this rated speed.

Does the LPC2388FBD144 support USB device, host, and OTG simultaneously?

Yes, the LPC2388FBD144 integrates a single USB 2.0 controller that supports device, host, and OTG modes through software configuration and external transceiver control. Its USB OTG capability includes SoftConnect (software-controlled 1.5 kΩ pull-up), VBUS sensing, and session request protocol handling. The LPC2388FBD144 provides two independent USB ports (port 1 and port 2), each with dedicated D+/D− pins and associated control signals like USB_HSTEN and USB_CONNECT, enabling true dual-role operation.

How many CAN interfaces does the LPC2388FBD144 include, and are they fully compliant?

The LPC2388FBD144 includes two independent CAN 2.0B-compliant controllers supporting both standard (11-bit) and extended (29-bit) identifier formats, with programmable bit timing and acceptance filtering. Each CAN channel has dedicated RX/TX pins (e.g., RD1/TD1 for CAN1, RD2/TD2 for CAN2) and full message object buffers. These controllers meet ISO 11898-1 physical layer requirements when paired with external CAN transceivers, and the LPC2388FBD144's internal timing logic ensures accurate sampling and synchronization across temperature and voltage variations.

What type of Ethernet interface is implemented in the LPC2388FBD144?

The LPC2388FBD144 implements a 10/100 Ethernet MAC with Reduced Media Independent Interface (RMII), not a full MII. It supports IEEE 802.3-compliant frame transmission and reception, integrated DMA, and hardware-assisted checksum offload. The RMII interface requires only a 50 MHz reference clock and five signals per direction (TXD[1:0], TX_EN, RXD[1:0], CRS_DV), reducing pin count and PCB complexity versus MII. External PHY selection is flexible, and the LPC2388FBD144's dedicated 16 kB Ethernet SRAM ensures zero-copy packet buffering.

Can the LPC2388FBD144 operate from its internal RC oscillator alone?

Yes, the LPC2388FBD144 can run from its internal 4 MHz RC oscillator, which is factory-trimmed to ±1% accuracy. However, when used as the system clock source, USB and CAN peripherals are disabled - limiting operation to non-USB/CAN applications such as basic control or debugging. For full functionality including Ethernet, USB, and CAN, the device requires either the main crystal oscillator (1–24 MHz) or the PLL locked to that source. The LPC2388FBD144's clock control logic automatically gates unused peripherals to minimize power consumption in RC-only mode.