NXP Semiconductors LPC1817JBD144E

Overview

LPC1817JBD144E from NXP Semiconductors is a 32-bit ARM Cortex-M3 microcontroller operating at up to 180 MHz, featuring 1 MB dual-bank flash (512 kB per bank), 136 kB on-chip SRAM, and 16 kB EEPROM. It integrates a State-Configurable Timer/PWM (SCTimer/PWM) subsystem, two High-speed USB interfaces (USB0 with OTG/Host/Device + on-chip HS PHY; USB1 with Host/Device + ULPI), and supports industrial control applications requiring deterministic real-time response and peripheral flexibility.

For engineers reviewing the LPC1817JBD144E datasheet, LPC1817JBD144E pinout, LPC1817JBD144E application, or LPC1817JBD144E equivalent, key selection criteria include its LQFP144 package, -40 °C to +105 °C temperature grade, absence of Ethernet and LCD controllers, presence of motor control PWM and QEI, and 83 GPIO pins - all critical for embedded motor drive and industrial I/O consolidation designs.

Technical Context

The LPC1817JBD144E implements an ARM Cortex-M3 r2p1 core with Harvard architecture, 3-stage pipeline, and integrated Memory Protection Unit (MPU) supporting eight memory regions. Its clock system includes three PLLs: one for CPU operation up to 180 MHz, one dedicated to USB0, and one configurable as audio PLL - enabling independent domain timing without external high-frequency crystals.

Peripheral interconnect is managed via AHB multilayer matrix and Global Input Multiplexer Array (GIMA), allowing dynamic routing of signals like timer captures, ADC triggers, and SCT events across multiple sources and sinks. The device lacks Ethernet MAC and LCD controller hardware (per Table 2), distinguishing it from higher-tier LPC18xx variants while retaining full USB, SPIFI, EMC, dual 10-bit ADCs (8 channels total), and 10-bit DAC capabilities.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC1837JBD144 and LPC1827JBD144, the LPC1817JBD144 uniquely balances USB-enabled field serviceability, motor-specific peripherals, and industrial temperature range - making it optimal for cost-sensitive, USB-diagnosable motor control systems without Ethernet or display requirements.

Availability

LPC1817JBD144E is available at Aetrix Electronics and suitable for industrial motor drive, smart energy metering, RFID reader terminals, and white goods control panels requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LPC1817JBD144E 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, with leadership in ARM-based microcontrollers and edge processing.

The LPC18xx family was designed for high-performance embedded control in industrial automation, motor drives, and metering - emphasizing real-time determinism, peripheral flexibility, and robustness across harsh environments.

FAQ

What is the maximum operating frequency of the LPC1817JBD144E?

The LPC1817JBD144E operates at a maximum CPU frequency of 180 MHz, achieved using its internal PLL system that accepts input from the 1–25 MHz crystal oscillator or 12 MHz internal RC oscillator. This frequency is sustained across the full -40 °C to +105 °C temperature range, and the ARM Cortex-M3 core maintains consistent timing behavior due to its 3-stage pipeline and Harvard architecture. The LPC1817JBD144E achieves this performance without requiring external high-frequency crystals thanks to its triple-PLL architecture.

Does the LPC1817JBD144E include Ethernet or LCD controller hardware?

No, the LPC1817JBD144E does not include Ethernet MAC or LCD controller hardware. According to Table 2 in the official NXP datasheet, Ethernet and LCD are explicitly marked as "no" for this variant. This distinguishes it from higher-tier LPC18xx parts like the LPC1857 or LPC1837. The LPC1817JBD144E retains full USB, SPIFI, EMC, SCTimer/PWM, motor control PWM, QEI, and dual ADC/DAC functionality - making it purpose-built for USB-connected motor control and metering applications where Ethernet and display are unnecessary.

How many GPIO pins are available on the LPC1817JBD144E?

The LPC1817JBD144E provides 83 GPIO pins, as confirmed in Table 2 of the NXP datasheet under the "GPIO" column for this specific part number. These pins are distributed across ports P0–P9 and PA–PF, each supporting up to eight configurable functions via the SCU registers. All GPIOs feature configurable pull-up/pull-down resistors, fast AHB access, DMA support, and can be configured as edge- or level-sensitive interrupt sources - enabling scalable I/O expansion in industrial control designs.

What USB capabilities does the LPC1817JBD144E support?

The LPC1817JBD144E supports two independent USB interfaces: USB0 (High-speed Host/Device/OTG with integrated on-chip high-speed PHY) and USB1 (High-speed Host/Device with ULPI interface for external PHY). Neither interface includes Ethernet or LCD functionality. USB0 enables direct OTG operation for field firmware updates and data transfer, while USB1 allows connection to external high-speed peripherals. The LPC1817JBD144E also includes USB electrical test software in ROM, simplifying compliance validation.

Is the LPC1817JBD144E pin-compatible with other LPC18xx LQFP144 variants?

The LPC1817JBD144E shares the same LQFP144 package (SOT486-1) and pinout configuration with other LPC18xx devices in that footprint, including LPC1837JBD144 and LPC1827JBD144. However, functional pin assignments differ where peripherals are omitted - for example, pins designated for Ethernet signals on LPC1837 are repurposed as GPIO or reserved on the LPC1817JBD144E. Therefore, while mechanical mounting is identical, PCB layout reuse requires verification of signal mapping against the specific variant's pin description table.