NXP Semiconductors LPC4320FBD144,551

Overview

LPC4320FBD144 from NXP Semiconductors is a dual-core ARM Cortex-M4/M0 flashless microcontroller in LQFP144 package, operating up to 204 MHz with 200 kB SRAM, Ethernet MAC, dual high-speed USB interfaces (USB0 host/device/OTG with on-chip PHY; USB1 host/device with ULPI), and 83 GPIOs - deployed in industrial motor control and embedded audio systems requiring deterministic real-time processing.

For engineers reviewing the LPC4320FBD144 datasheet, LPC4320FBD144 pinout, LPC4320FBD144 application, or LPC4320FBD144 equivalent, key selection criteria include dual-core asymmetric execution capability, absence of LCD/Ethernet in this variant, USB0-only high-speed PHY integration, and LQFP144-compatible layout for cost-sensitive industrial control designs.

Technical Context

The LPC4320FBD144 implements an asymmetric dual-core architecture: the Cortex-M4 core handles main application tasks with hardware FPU and MPU support, while the Cortex-M0 co-processor offloads real-time I/O management at up to 204 MHz. Both cores share access to 200 kB SRAM across multiple AHB-connected blocks, enabling low-latency inter-core communication via shared memory and event router.

Its peripheral set excludes LCD and Ethernet controllers (per Table 2), but retains full USB0 functionality with integrated HS PHY, USB1 with ULPI interface, two 10-bit ADCs (8 channels total), one 10-bit DAC, SCTimer/PWM subsystem, GIMA crossbar, and EMC supporting external NOR/SRAM - optimized for deterministic sensor fusion and motor actuation without external memory bandwidth bottlenecks.

Key Specifications

Pinout & Package

LQFP144 package with exposed thermal pad (SOT486-1), 144 leads, 0.5 mm pitch, body size 20 × 20 × 1.4 mm - suitable for reflow assembly and thermal management in enclosed industrial enclosures.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC4330FBD144 and LPC4310FBD144, the LPC4320FBD144 delivers optimal balance of USB-enabled connectivity, 200 kB SRAM for real-time buffers, and dual-core determinism - making it the preferred choice for industrial control designs needing USB firmware updates and analog signal processing without Ethernet overhead.

Availability

LPC4320FBD144 is available at Aetrix Electronics and suitable for industrial motor control, embedded audio, power management, e-metering, and white goods applications requiring stable component supply and long-term production continuity.

Supply support for LPC4320FBD144 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, with deep expertise in ARM-based microcontrollers and edge processing.

The LPC4300 series targets high-performance embedded control applications demanding dual-core determinism, rich analog/digital peripheral integration, and USB/Ethernet connectivity - designed specifically for industrial automation and intelligent power systems.

FAQ

What is the maximum operating frequency of the LPC4320FBD144?

The LPC4320FBD144 operates at a maximum CPU frequency of 204 MHz for both its ARM Cortex-M4 and Cortex-M0 cores. This frequency is achieved using internal PLLs driven by the 12 MHz IRC oscillator or an external crystal (1–25 MHz). The chip maintains full peripheral functionality at this speed, including USB0 high-speed operation and ADC sampling at 400 kS/s.

Does the LPC4320FBD144 include on-chip flash memory?

No, the LPC4320FBD144 is a flashless microcontroller. It relies on external memory (via SPIFI or EMC) or on-chip SRAM (200 kB) for program storage and execution. Boot is supported from internal ROM (64 kB), SPI flash, or UART/USB, with bootloader firmware preloaded in ROM - eliminating need for external flash in many cost-sensitive designs.

Which USB interfaces are functional on the LPC4320FBD144?

The LPC4320FBD144 supports USB0 (High-Speed Host/Device/OTG with integrated PHY) and USB1 (High-Speed Host/Device with ULPI interface). Unlike higher-tier variants, it does not include Ethernet or LCD controllers. USB0's on-chip PHY reduces external component count, while USB1's ULPI interface allows connection to certified external PHYs for ESD-hardened or cable-length-extended applications.

How many ADC channels does the LPC4320FBD144 support?

The LPC4320FBD144 integrates two independent 10-bit ADCs (ADC0 and ADC1), each supporting up to eight input channels - totaling eight unique analog inputs (channels 0–7 shared between both ADCs). Conversion rate is 400 kSamples/s per ADC, with DMA support enabling continuous streaming without CPU load - ideal for motor current sensing and power quality monitoring.

Is the LPC4320FBD144 pin-compatible with other LPC43xx LQFP144 variants?

Yes, the LPC4320FBD144 shares identical LQFP144 pinout (SOT486-1) with LPC4330FBD144 and LPC4310FBD144. However, peripheral availability differs: Ethernet, LCD, and USB1 functionality are disabled in LPC4320FBD144 per silicon configuration - meaning unused pins retain GPIO or alternate functions but cannot activate excluded peripherals without hardware modification.