NXP Semiconductors LPC1853JET256,551

Overview

LPC1853JET256 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, dual High-speed USB (USB0/USB1), LCD controller, and External Memory Controller (EMC). It targets industrial control systems requiring deterministic real-time response, secure boot, and multi-interface connectivity.

For engineers reviewing the LPC1853JET256 datasheet, LPC1853JET256 pinout, LPC1853JET256 application, or LPC1853JET256 equivalent, key selection considerations include its LBGA256 package, -40 °C to +105 °C temperature grade, dual-bank flash for safe firmware updates, IEEE 1588 time stamping support, and configurable SCTimer/PWM subsystem for motor control timing precision.

Technical Context

The LPC1853JET256 implements an ARM Cortex-M3 r2p1 core with Harvard architecture, 3-stage pipeline, and integrated MPU/NVIC for deterministic interrupt handling. Its memory subsystem includes dual-bank flash enabling background programming and atomic bank switching, plus multiple SRAM blocks accessible via separate AHB buses for concurrent peripheral and CPU access.

Peripherals are tightly coupled to the AHB multilayer matrix: Ethernet MAC supports RMII/MII with DMA and IEEE 1588 v2 timestamping; USB0 integrates high-speed PHY while USB1 uses ULPI for external PHY attachment; the State Configurable Timer/PWM (SCTimer/PWM) provides event-driven, state-machine-based timing with cross-triggering via GIMA.

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 LPC1853JET256, LPC1857JET256 offers double flash capacity for robust firmware versioning, while LPC1833JET256 removes LCD/Ethernet to lower cost and power - both retain identical LBGA256 packaging and industrial temperature rating for drop-in compatibility in non-display/non-network variants.

Availability

LPC1853JET256 is available at Aetrix Electronics and suitable for industrial PLC controllers, smart energy meters, RFID reader systems, and white goods control panels requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LPC1853JET256 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 LPC18xx product line was designed for high-performance, real-time embedded control with integrated networking, human-machine interface, and secure firmware update capabilities - targeting industrial automation, metering, and intelligent edge devices.

FAQ

What is the maximum operating frequency of the LPC1853JET256?

The LPC1853JET256 operates at a maximum CPU frequency of 180 MHz using the ARM Cortex-M3 core. This frequency is achieved via internal PLLs that allow operation at full speed without requiring a high-frequency crystal oscillator. The device includes three PLLs: one for CPU clocking, one dedicated to High-speed USB, and a third for audio applications - ensuring optimal performance across mixed-signal workloads.

Does the LPC1853JET256 support IEEE 1588 Precision Time Protocol?

Yes, the LPC1853JET256 Ethernet MAC supports IEEE 1588-2008 v2 (PTPv2) with hardware-accelerated timestamping. It provides advanced time stamping features including ingress/egress packet timestamping, fine-grained correction for PHY delays, and register-level access to captured timestamps - enabling sub-microsecond synchronization accuracy in industrial Ethernet networks such as PROFINET IRT or EtherCAT.

What are the flash memory configuration options for LPC1853JET256?

The LPC1853JET256 contains 512 kB of on-chip flash memory organized into two independent 256 kB banks (Bank A and Bank B). This dual-bank architecture enables background programming, atomic bank switching, and fail-safe firmware updates - critical for industrial systems requiring zero-downtime field upgrades. Each bank can be independently erased and programmed while the other executes code.

Which packages are available for the LPC1853JET256?

The LPC1853JET256 is exclusively available in the LBGA256 package (SOT740-2): a plastic low-profile ball grid array with 256 balls, 17 mm × 17 mm body size, and 1 mm height. This package supports high I/O density and thermal performance for industrial applications. Other variants like LPC1853JBD208 use LQFP208, but LPC1853JET256 is specifically qualified and marked for LBGA256 only.

How does the SCTimer/PWM subsystem differ from standard timers in LPC1853JET256?

The SCTimer/PWM in LPC1853JET256 is a state-configurable, event-driven subsystem - unlike conventional timers - with programmable states, transitions, and outputs. It supports complex PWM patterns (e.g., dead-time insertion, complementary outputs), input capture with timestamping, and cross-triggering via GIMA. Its hardware state machine offloads timing-critical tasks from the CPU, enabling deterministic waveform generation even under heavy interrupt load.