NXP Semiconductors LPC1833FET256,551

Overview

LPC1833FET256 from NXP Semiconductors is a 32-bit ARM Cortex-M3 microcontroller operating at up to 180 MHz, featuring 512 kB flash (256 kB per bank), 136 kB SRAM, and integrated Ethernet MAC with IEEE 1588 support. It includes dual 10-bit ADCs (400 kSamples/s), a 10-bit DAC, USB 2.0 Host/Device/OTG (USB0) with on-chip high-speed PHY, and USB 2.0 Host/Device (USB1) with ULPI interface - deployed in industrial gateways requiring deterministic real-time control and networked sensor aggregation.

For engineers reviewing the LPC1833FET256 datasheet, LPC1833FET256 pinout, LPC1833FET256 application, or LPC1833FET256 equivalent, key selection criteria include its LBGA256 package with 164 GPIOs, absence of LCD controller (distinguishing it from LPC185x), F-grade temperature range (–40 °C to +85 °C), and dual USB capability with hardware-accelerated Ethernet for time-sensitive industrial protocols.

Technical Context

The LPC1833FET256 implements an ARM Cortex-M3 r2p1 core with Harvard architecture, 3-stage pipeline, and integrated Memory Protection Unit (MPU) supporting eight memory regions. Its debug infrastructure includes JTAG/SWD, ETM/ETB trace, eight breakpoints, and four watchpoints - enabling robust firmware validation in safety-critical embedded systems.

Peripherals are organized via an AHB multilayer matrix with DMA access to all slaves. The State Configurable Timer/PWM (SCTimer/PWM) subsystem supports complex waveform generation, while the Global Input Multiplexer Array (GIMA) enables flexible event routing between timers, ADCs, and SCT - critical for synchronized motor control and power conversion timing.

Key Specifications

Pinout & Package

Package: LBGA256 (Plastic low profile ball grid array; 256 balls; body 17 × 17 × 1 mm; SOT740-2).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC1853FET256, the LPC1833FET256 reduces flash capacity but maintains identical peripheral sets and timing capabilities - making it optimal for cost-sensitive, non-display industrial nodes. Versus LPC4357JET256, it prioritizes deterministic Ethernet synchronization over raw compute throughput.

Availability

LPC1833FET256 is available at Aetrix Electronics and suitable for industrial gateways, motor drive controllers, smart energy meters, and RFID reader hubs requiring stable component supply across extended product lifecycles.

Supply support for LPC1833FET256 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 real-time networking.

The LPC18xx family was designed specifically for high-performance industrial automation applications demanding integrated Ethernet, USB, and deterministic real-time control - targeting programmable logic controllers, motion controllers, and protocol gateways.

FAQ

What is the maximum operating frequency of the LPC1833FET256?

The LPC1833FET256 operates at a maximum CPU frequency of 180 MHz, achieved via internal PLLs that allow full-speed operation without requiring a high-frequency crystal oscillator. This frequency is sustained across the full –40 °C to +85 °C temperature range under 3.3 V supply conditions, as validated in NXP's characterization testing and documented in the LPC185X_3X_2X_1X datasheet Rev. 5.3.

Does the LPC1833FET256 include an LCD controller?

No, the LPC1833FET256 does not include an LCD controller. This distinguishes it from the LPC185x series (e.g., LPC1853FET256), which integrates a full-featured LCD controller supporting up to 1024H × 768V resolution. The absence of LCD hardware in the LPC1833FET256 reduces die size and cost while preserving all other connectivity and control peripherals - confirmed in Table 2 of the official datasheet.

How many USB interfaces does the LPC1833FET256 support?

The LPC1833FET256 supports two USB 2.0 interfaces: USB0 (Host/Device/OTG with on-chip high-speed PHY) and USB1 (Host/Device with ULPI interface to external high-speed PHY). Both include DMA support and dedicated ROM-based USB stack software - enabling simultaneous USB device enumeration and host-side peripheral attachment, as specified in Section 2 "Features and benefits" of the LPC185X_3X_2X_1X datasheet.

What is the flash memory configuration of the LPC1833FET256?

The LPC1833FET256 contains 512 kB of on-chip flash memory organized in two independent banks of 256 kB each. This dual-bank architecture enables seamless firmware updates via bank-swapping - allowing new code to be written to one bank while the system executes from the other - a capability explicitly listed in Table 2 "Ordering options" for LPC1833FET256.

Is IEEE 1588 time stamping supported in hardware on the LPC1833FET256?

Yes, the LPC1833FET256 includes full hardware support for IEEE 1588-2008 v2 (Precision Time Protocol) within its Ethernet MAC. This includes dedicated timestamp registers, frame ingress/egress capture, and hardware-assisted correction - enabling sub-microsecond synchronization accuracy without CPU intervention, as detailed in Section 2 "Serial interfaces" and Figure 1 block diagram of the LPC185X_3X_2X_1X datasheet.