NXP Semiconductors LPC1769FBD100,551

Overview

LPC1769FBD100 from NXP Semiconductors is a 32-bit ARM Cortex-M3 microcontroller operating at up to 120 MHz, featuring 512 kB flash, 64 kB SRAM, dual CAN 2.0B interfaces, USB 2.0 Host/Device/OTG with on-chip PHY, and Ethernet MAC with RMII-designed for industrial networking and motor control systems requiring real-time I/O, deterministic timing, and multi-protocol connectivity.

For engineers reviewing the LPC1769FBD100 datasheet, LPC1769FBD100 pinout, LPC1769FBD100 application, or LPC1769FBD100 equivalent, key selection considerations include its 120 MHz CPU frequency, 70 GPIO pins with configurable open-drain mode, integrated 12-bit ADC (200 kHz), 10-bit DAC, and pin compatibility with LPC236x Arm7 series for legacy migration paths.

Technical Context

The LPC1769FBD100 implements a Harvard-architecture Cortex-M3 core with 3-stage pipeline, internal prefetch unit, and Memory Protection Unit (MPU) supporting eight memory regions. Its multilayer AHB matrix enables concurrent access by CPU, GPDMA, Ethernet MAC, and USB controller without arbitration delay.

Peripheral integration includes dedicated DMA channels for Ethernet, USB, SSP, I2S, UART, ADC, and DAC; split APB bus architecture for reduced CPU-DMA contention; and clock generation with main oscillator (1–25 MHz), 4 MHz ±1% IRC, dual PLLs (CPU and USB), and RTC oscillator-all managed by an integrated Power Management Unit (PMU) across four low-power modes.

Key Specifications

Pinout & Package

Package: LQFP100 (14 mm × 14 mm × 1.4 mm, SOT407-1). 100-pin quad flat package with exposed thermal pad; RoHS-compliant, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC1768FBD100, the LPC1769FBD100 delivers 20% higher CPU throughput and native USB OTG transceiver support; versus STM32F407VGT6, it offers integrated Ethernet MAC and USB transceiver but lacks FPU and has lower flash density-making it optimal for deterministic real-time I/O rather than math-heavy signal processing.

Availability

LPC1769FBD100 is available at Aetrix Electronics and suitable for industrial networking, motor control, smart energy metering, and security system designs requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for LPC1769FBD100 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 LPC176x series was designed as a high-integration, low-power ARM Cortex-M3 platform targeting industrial control, motor drives, and networked embedded systems-emphasizing peripheral richness, real-time determinism, and migration path from legacy Arm7 architectures.

FAQ

What is the maximum operating frequency of the LPC1769FBD100?

The LPC1769FBD100 operates at a maximum CPU frequency of 120 MHz, achieved using its on-chip PLL driven by the main oscillator, internal RC oscillator, or RTC oscillator. This frequency is supported across the full industrial temperature range (−40 °C to +85 °C) with zero wait states on flash execution due to the enhanced flash accelerator. The LPC1769FBD100 sustains this speed with all peripherals active under typical 3.3 V supply conditions.

Does the LPC1769FBD100 include an integrated USB transceiver?

Yes, the LPC1769FBD100 integrates a full-speed USB 2.0 transceiver supporting Device, Host, and OTG modes. Pins P0[27] (USB_SDA), P0[28] (USB_SCL), P0[29] (USB_D+), and P0[30] (USB_D−) provide native OTG functionality-including I2C-based transceiver control and differential signaling-eliminating the need for external USB PHY components in most implementations.

How many CAN interfaces does the LPC1769FBD100 support?

The LPC1769FBD100 supports two independent CAN 2.0B controllers (CAN1 and CAN2), each with full message object buffering, acceptance filtering, and bit-rate configuration down to 1 kbit/s. These interfaces are accessible via dedicated pins (e.g., P0[0]/RD1/TXD3/SDA1 for CAN1 RX, P0[4]/I2SRX_CLK/RD2/CAP2[0] for CAN2 RX) and operate concurrently without shared resources.

Is the LPC1769FBD100 pin-compatible with earlier NXP microcontrollers?

Yes, the LPC1769FBD100 is pin-compatible with the 100-pin LPC236x Arm7-based microcontroller series. This allows direct PCB replacement in existing designs-retaining identical footprint, power delivery, and peripheral pin assignments-while upgrading to the ARM Cortex-M3 architecture, higher clock speed, and expanded peripheral set of the LPC1769FBD100.

What power supply requirements does the LPC1769FBD100 have?

The LPC1769FBD100 requires a single 3.3 V supply rail (VDD(3V3)) operating within 2.4 V to 3.6 V, with separate analog supply (VDDA), reference (VREFP/VREFN), and RTC backup (VBAT) domains. It integrates a Power Management Unit (PMU) enabling four low-power modes-Sleep, Deep-sleep, Power-down, and Deep power-down-with wake-up capability via Ethernet, USB, CAN, RTC, or GPIO events.