NXP Semiconductors LPC1549JBD100K

Overview

LPC1549JBD100K from NXP Semiconductors is a 32-bit ARM Cortex-M3 microcontroller designed for industrial motor control and digital power applications. It operates at up to 72 MHz, integrates 256 kB flash, 36 kB SRAM, 4 kB EEPROM, dual 12-bit 2 Msamples/s ADCs, one 12-bit DAC, C_CAN, USB 2.0 full-speed device controller with on-chip PHY, and four State Configurable Timers (SCTimer/PWM) - enabling precise real-time motor commutation and closed-loop analog feedback.

For engineers reviewing the LPC1549JBD100K datasheet, LPC1549JBD100K pinout, LPC1549JBD100K application, or LPC1549JBD100K equivalent, key selection criteria include its LQFP100 package with 76 GPIOs, integrated SCTIPU for immediate timer abort handling, RTC wake-up from Deep power-down, and support for high-resolution PWM generation with dither engine for improved edge resolution in motion drives.

Technical Context

The LPC1549JBD100K implements an ARM Cortex-M3 core (r2p1) with Harvard architecture, 3-stage pipeline, and internal prefetch unit supporting speculative branching. Its memory subsystem includes 256 kB flash with 256-byte page erase, 36 kB SRAM, and 4 kB EEPROM - all accessible via AHB multilayer matrix with DMA arbitration.

Peripheral integration centers on deterministic timing: four SCTimers with input pre-processor unit (SCTIPU), dual ADCs with independent trigger sources and asynchronous clocking options, and C_CAN with dedicated message RAM. Clock generation uses system PLL (up to 72 MHz), USB PLL, and SCT PLL - each independently configurable for jitter-sensitive subsystems.

Key Specifications

Pinout & Package

LQFP100 plastic low-profile quad flat package (14 × 14 × 1.4 mm), 100 leads, lead pitch 0.5 mm. Pin 1 index marked by dot or bevelled corner per JEDEC standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC1548JBD100, the LPC1549JBD100 adds 128 kB flash and integrated USB PHY for firmware updates and diagnostics; versus LPC1769FBD100, it trades raw CPU speed and Ethernet for superior analog timing precision and lower power in motor control loops.

Availability

LPC1549JBD100K is available at Aetrix Electronics and suitable for motion drives, solar inverters, industrial automation, and digital power supplies requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for LPC1549JBD100K 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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The LPC15xx product line was engineered specifically for high-precision analog-intensive embedded control - emphasizing deterministic timing, integrated motor control peripherals (SCTimer/PWM), and robust industrial-grade analog signal acquisition.

FAQ

What is the maximum operating frequency of the LPC1549JBD100K?

The LPC1549JBD100K features an ARM Cortex-M3 core rated for up to 72 MHz operation. This frequency is achieved using the system PLL, which can be driven by the internal 12 MHz RC oscillator (trimmed to ±1 %) or an external crystal (1–25 MHz). The core maintains full performance across the specified industrial temperature range (−40 °C to +105 °C) and supply voltage (2.4 V–3.6 V).

Does the LPC1549JBD100K include a USB physical layer?

Yes, the LPC1549JBD100K integrates a full-speed USB 2.0 device controller with an on-chip PHY. Pins 35 (USB_DM) and 36 (USB_DP) provide direct differential signaling compliant with USB 2.0 specifications. This eliminates the need for external transceivers and simplifies PCB layout for diagnostic interfaces, firmware updates, and CDC-class virtual COM port implementations.

How many analog-to-digital converters does the LPC1549JBD100K have, and what are their key specs?

The LPC1549JBD100K includes two independent 12-bit ADCs (ADC0 and ADC1), each supporting up to 12 input channels and sampling rates up to 2 Msamples/s. Each ADC has two independent conversion sequences, multiple trigger sources (including SCTimer match events and comparator outputs), and optional asynchronous clocking from dedicated PLLs - enabling precise, low-skew sampling for motor current reconstruction and power quality monitoring.

What packaging and pin count does the LPC1549JBD100K use?

The LPC1549JBD100K is supplied in an LQFP100 package: a 100-lead, plastic low-profile quad flat package measuring 14 mm × 14 mm × 1.4 mm with 0.5 mm lead pitch. Pin 1 is identified by a dot or bevelled corner. This package provides 76 general-purpose I/O pins, including dedicated USB, CAN, RTC, and crystal oscillator connections - optimized for high-density industrial control boards.

Is the LPC1549JBD100K supported by NXP's ROM-based drivers and boot loader?

Yes, the LPC1549JBD100K includes 32 kB of on-chip ROM containing validated drivers and boot firmware. This ROM supports USB, C_CAN, USART, SPI, I²C, ADC, DAC, DMA, and Flash IAP/ISP operations - reducing firmware development time and ensuring reliable field updates. Boot options include flash, USB, C_CAN, or USART, with configurable pin-based ISP entry on reset.