NXP Semiconductors LPC1850FET180,551

Overview

LPC1850FET180,551 from NXP Semiconductors is a 32-bit ARM Cortex-M3 flashless microcontroller operating at up to 180 MHz, featuring 200 kB on-chip SRAM, integrated Ethernet MAC with IEEE 1588 support, dual high-speed USB interfaces (one OTG-capable), and an LCD controller - deployed in industrial gateways requiring real-time connectivity, deterministic timing, and multi-interface consolidation.

For engineers reviewing the LPC1850FET180,551 datasheet, LPC1850FET180,551 pinout, LPC1850FET180,551 application, or LPC1850FET180,551 equivalent, this page delivers verified package mapping (TFBGA180), validated peripheral configuration (USB0/USB1 + Ethernet + LCD enabled), confirmed GPIO count (118 pins), and precise alternative part comparisons for migration or second-sourcing decisions.

Technical Context

The LPC1850FET180,551 implements a Harvard-architecture ARM Cortex-M3 core with 3-stage pipeline, integrated Memory Protection Unit (MPU) supporting eight regions, and Nested Vectored Interrupt Controller (NVIC). It uses separate instruction and data buses with speculative branching via internal prefetch unit.

Its peripheral subsystem includes a quad-SPI Flash Interface (SPIFI) running up to 52 MB/s, dual USB 2.0 controllers (USB0 with on-chip HS PHY, USB1 with ULPI interface), 10/100T Ethernet MAC with RMII/MII and IEEE 1588 timestamping, and a State Configurable Timer/PWM (SCTimer/PWM) subsystem accessible over AHB.

Key Specifications

Pinout & Package

Package: TFBGA180 (Thin Fine-Pitch Ball Grid Array, 180-ball, 12 mm × 12 mm, 0.65 mm pitch).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC1850FET180,551, LPC1830FET180 removes LCD and OTG USB to reduce cost and power, while LPC4350FET180 adds a second core and FPU for compute-intensive tasks - making LPC1850FET180,551 the optimal balance of integrated peripherals, real-time determinism, and cost for industrial HMI and protocol gateway use cases.

Availability

LPC1850FET180,551 is available at Aetrix Electronics and suitable for industrial gateways, smart energy meters, RFID readers, and white goods HMI requiring stable component supply, long-term lifecycle support, and qualified sourcing for production ramp.

Supply support for LPC1850FET180,551 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 focused on secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in ARM-based microcontrollers and system-on-chip integration.

The LPC1800 series was designed specifically for high-performance, flashless embedded applications demanding rich peripheral integration, deterministic real-time operation, and robust industrial interface support - targeting protocol bridging, edge node control, and human-machine interface consolidation.

FAQ

What is the maximum operating frequency of the LPC1850FET180,551?

The LPC1850FET180,551 operates at a maximum CPU frequency of 180 MHz. This is achieved using three on-chip PLLs: one dedicated to the CPU, one to USB high-speed operation, and a third configurable for audio or other clock domains. The core maintains full performance across its specified voltage range (2.2 V to 3.6 V) and temperature range (–40 °C to +85 °C), as validated in the official NXP datasheet Rev. 6.8.

Does the LPC1850FET180,551 include on-chip flash memory?

No, the LPC1850FET180,551 is a flashless microcontroller. It relies on external memory for program storage - supported via its Quad SPI Flash Interface (SPIFI) for XIP execution or External Memory Controller (EMC) for parallel NOR/SDRAM. On-chip non-volatile storage consists of 64 kB ROM (boot code and drivers) and 64-bit + 256-bit OTP memory for configuration and security keys - all documented in Section 2 of the LPC1850/30/20/10 datasheet.

How many GPIO pins are available on the LPC1850FET180,551 package?

The LPC1850FET180,551 in TFBGA180 package provides 118 GPIO pins, as confirmed in Table 2 of the datasheet. These are distributed across 16 ports (P0–P9, PA–PF), each supporting up to eight configurable functions via the System Configuration Unit (SCU). All GPIO registers reside on the AHB bus for low-latency access, and eight pins can be configured as edge- or level-sensitive interrupt sources - enabling responsive real-time I/O handling.

What USB configurations does the LPC1850FET180,551 support?

The LPC1850FET180,551 supports two independent USB 2.0 interfaces: USB0 (Host/Device/OTG with integrated high-speed PHY) and USB1 (Host/Device with ULPI interface to external PHY). USB0 enables self-powered OTG operation and includes USB indicator LED controls (USB0_IND0/IND1) and VBUS drive (USB0_PPWR). USB1 supports high-speed operation via external PHY connection - both interfaces include DMA engines to minimize CPU load during bulk transfers, as detailed in Section 2 "Serial interfaces" of the datasheet.

Is the LPC1850FET180,551 compatible with IEEE 1588 Precision Time Protocol?

Yes, the LPC1850FET180,551 Ethernet MAC supports IEEE 1588-2008 v2 (PTPv2) timestamping with hardware-assisted time stamp insertion and extraction on both transmit and receive paths. This capability is enabled through dedicated registers in the Ethernet subsystem and requires no CPU cycle overhead for timestamp generation - making it suitable for time-critical industrial applications such as substation automation and motion control synchronization, as specified in Section 2 "Serial interfaces" and Figure 1 of the datasheet.