NXP Semiconductors LPC1825JBD144E

Overview

LPC1825JBD144E from NXP Semiconductors is a 32-bit ARM Cortex-M3 microcontroller operating at up to 180 MHz, featuring 768 kB flash (384 kB per bank), 136 kB SRAM, and no Ethernet or LCD controller. It integrates dual 10-bit ADCs (8 channels total), one 10-bit DAC, USB0 Host/Device/OTG with on-chip high-speed PHY, motor control PWM, QEI, and external memory controller (EMC) - deployed in industrial motor drives and smart metering systems.

For engineers reviewing the LPC1825JBD144E datasheet, LPC1825JBD144E pinout, LPC1825JBD144E application, or LPC1825JBD144E equivalent, key selection criteria include its LQFP144 package, -40 °C to +105 °C temperature grade, absence of Ethernet/LCD, presence of EMC and motor control PWM, and compatibility with NXP's LPCOpen software ecosystem.

Technical Context

The LPC1825JBD144E implements an ARM Cortex-M3 r2p1 core with MPU, NVIC, and system tick timer, executing from dual-bank flash with prefetch and branch speculation. Its memory subsystem includes 136 kB SRAM across multiple AHB-accessible blocks, 16 kB EEPROM, and 64 kB ROM with boot code and USB stack.

Digital peripherals are routed via Global Input Multiplexer Array (GIMA) and State Configurable Timer/PWM (SCTimer/PWM); analog functions include two synchronized 10-bit ADCs sharing eight input channels and a 400 kSamples/s DAC. Clocking uses three PLLs - one for CPU, one for USB0, and one configurable as audio PLL - with crystal (1–25 MHz), 12 MHz IRC, and RTC oscillators.

Key Specifications

Pinout & Package

Package: Plastic low-profile quad flat package, 144 leads, body 20 × 20 × 1.4 mm (SOT486-1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC1833JBD144, the LPC1825JBD144E trades Ethernet for motor control PWM and QEI; versus LPC4357JBD208, it offers lower cost and smaller footprint at the expense of dual-core performance and display support - making it optimal for cost-sensitive, motor-centric industrial designs.

Availability

LPC1825JBD144E is available at Aetrix Electronics and suitable for industrial motor drives, smart energy meters, RFID readers, and white goods control units requiring stable component supply across extended temperature ranges.

Supply support for LPC1825JBD144E 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 edge processing.

The LPC18xx product line was designed for high-performance, feature-rich embedded control in harsh industrial environments - emphasizing real-time determinism, peripheral flexibility, and long-term supply stability.

FAQ

What is the maximum operating frequency of the LPC1825JBD144E?

The LPC1825JBD144E operates at a maximum CPU frequency of 180 MHz, achieved using the on-chip PLL with internal or external clock sources. This frequency is fully supported across its -40 °C to +105 °C industrial temperature range and enables deterministic real-time execution of control loops and communication stacks in the LPC1825JBD144E.

Does the LPC1825JBD144E include Ethernet or LCD controller functionality?

No, the LPC1825JBD144E does not include Ethernet MAC or LCD controller peripherals. These features are present in higher-tier variants like LPC185x but omitted in the LPC1825JBD144E to optimize cost and power for motor control and metering applications where those interfaces are unnecessary.

How much flash and SRAM does the LPC1825JBD144E provide?

The LPC1825JBD144E integrates 768 kB of on-chip flash memory (split into two 384 kB banks) and 136 kB of SRAM. The dual-bank flash supports secure firmware updates with zero-downtime swapping, while the SRAM allocation includes multiple AHB-accessible blocks optimized for DMA and real-time data buffering in the LPC1825JBD144E.

What USB capabilities does the LPC1825JBD144E support?

The LPC1825JBD144E includes one High-speed USB 2.0 interface (USB0) with integrated PHY, supporting Host, Device, and OTG modes with DMA acceleration. It does not include USB1 - which requires an external PHY - making USB0 self-contained for embedded USB device or host applications in the LPC1825JBD144E.

Is the LPC1825JBD144E pin-compatible with other LPC18xx variants in LQFP144?

Yes, the LPC1825JBD144E shares identical pinout and package (LQFP144, SOT486-1) with other LPC18xx family members in the same package, including LPC1833JBD144 and LPC1837JBD144. However, peripheral availability (e.g., Ethernet, LCD, motor PWM) differs - requiring careful register-level validation during migration to the LPC1825JBD144E.