NXP Semiconductors LPC1825JET100E

Overview

LPC1825JET100E from NXP Semiconductors is a 32-bit ARM Cortex-M3 microcontroller targeting industrial embedded systems, operating at up to 180 MHz with 768 kB flash (384 kB per bank), 136 kB SRAM, and no Ethernet or LCD controller. It integrates dual 10-bit ADCs (400 kSamples/s), a 10-bit DAC, USB 2.0 Host/Device interface (USB0), and supports TFBGA100 packaging for space-constrained designs.

For engineers reviewing the LPC1825JET100E datasheet, LPC1825JET100E pinout, LPC1825JET100E application, or LPC1825JET100E equivalent, key selection criteria include its -40 °C to +105 °C temperature grade, absence of Ethernet/LCD peripherals, 49 GPIO pins, TFBGA100 footprint, and compatibility with NXP's LPCOpen software ecosystem.

Technical Context

The LPC1825JET100E implements an ARM Cortex-M3 r2p1 core with Harvard architecture, 3-stage pipeline, and integrated MPU/NVIC for deterministic real-time control. It uses separate AHB buses for instruction, data, and peripherals, and includes a prefetch unit with speculative branching to sustain high CPU throughput.

Its peripheral set centers on connectivity and signal conditioning: USB0 with on-chip high-speed PHY, two SSP controllers with DMA, four UART/USART interfaces (including IrDA and ISO7816 smart card support), C_CAN 2.0B, I²S, and a flexible State Configurable Timer/PWM subsystem. The absence of Ethernet and LCD blocks distinguishes it from higher-tier LPC18xx variants.

Key Specifications

Pinout & Package

Package: TFBGA100 (SOT926-1), plastic thin fine-pitch ball grid array, 100 balls, 9 mm × 9 mm × 0.7 mm body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC1833JET100, the LPC1825JET100 offers 256 kB more flash for larger firmware or dual-bank OTA updates; versus LPC4322JET100, it trades M4F compute for proven M3 determinism and lower power in fixed-function control tasks.

Availability

LPC1825JET100E is available at Aetrix Electronics and suitable for industrial PLC modules, smart energy meters, white goods motor drives, and RFID reader controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LPC1825JET100E 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 LPC18xx family was designed for high-performance, feature-rich industrial embedded applications demanding real-time responsiveness, rich peripheral integration, and long-term availability - with the LPC1825JET100E optimized for cost-sensitive, space-constrained designs lacking Ethernet/LCD requirements.

FAQ

What is the maximum operating frequency of the LPC1825JET100E?

The LPC1825JET100E operates at a maximum CPU frequency of 180 MHz, achieved via internal PLLs that allow full-speed execution without requiring a high-frequency crystal oscillator. This frequency is sustained across its full industrial temperature range (-40 °C to +105 °C), and the ARM Cortex-M3 core's 3-stage pipeline and prefetch unit ensure consistent performance under real-time workloads. The LPC1825JET100E maintains this rating without derating in standard PCB thermal environments.

Does the LPC1825JET100E include an Ethernet MAC?

No, the LPC1825JET100E does not include an Ethernet MAC. Per Table 2 in the official NXP datasheet, Ethernet is explicitly marked "no" for this variant. This distinguishes it from LPC185x/3x parts and aligns with its positioning as a cost-optimized, space-efficient MCU for applications where wired Ethernet connectivity is unnecessary. All other communication interfaces - including USB0, multiple UARTs, SSP, I²C, and CAN - remain fully functional in the LPC1825JET100E.

How many ADC channels does the LPC1825JET100E support?

The LPC1825JET100E integrates two independent 10-bit ADCs (ADC0 and ADC1), sharing a total of four analog input channels - as confirmed in Table 2 of the NXP datasheet. Each channel is accessible via dedicated or multiplexed pins, and both ADCs support simultaneous sampling at up to 400 kSamples/s. This configuration is sufficient for multi-sensor monitoring in industrial or metering applications, though fewer than the eight-channel capability found in higher-tier LPC18xx variants.

What is the purpose of the SCTimer/PWM subsystem in the LPC1825JET100E?

The State Configurable Timer/PWM (SCTimer/PWM) in the LPC1825JET100E is a programmable, event-driven peripheral that offloads complex timing and waveform generation from the CPU. It supports hardware-based PWM output with dead-time insertion, input capture with timestamping, and configurable state transitions triggered by external events or timer matches - enabling precise motor control, power conversion, or signal generation without continuous CPU intervention. Its design directly enhances real-time determinism in the LPC1825JET100E.

Is the LPC1825JET100E pin-compatible with other TFBGA100 LPC18xx variants?

Yes, the LPC1825JET100E shares the identical TFBGA100 (SOT926-1) mechanical footprint and pin assignment with other JET100-suffixed LPC18xx parts such as LPC1833JET100 and LPC1837JET100. However, functional pin compatibility is limited to shared peripherals: USB0, UARTs, SSP, I²C, and GPIO remain consistent, while pins assigned to absent blocks (e.g., Ethernet, LCD) are repurposed as GPIO or reserved. Board-level reuse is feasible only when the design does not rely on excluded peripherals.