NXP Semiconductors LPC1778FBD144,551

Overview

LPC1778FBD144,551 from NXP Semiconductors is a 32-bit ARM Cortex-M3 microcontroller designed for high-integration embedded applications with low power dissipation. It operates at up to 120 MHz, integrates 512 kB flash, 96 kB SRAM (64 kB main + 2×16 kB peripheral), and supports USB Device/Host/OTG, Ethernet MAC, dual CAN, five UARTs, and an 8-channel 12-bit ADC - deployed in industrial motor control and networked appliance gateways.

For engineers reviewing the LPC1778FBD144,551 datasheet, LPC1778FBD144,551 pinout, LPC1778FBD144,551 application, or LPC1778FBD144,551 equivalent, key selection criteria include its LQFP144 package with 109 GPIOs, absence of LCD controller (vs. LPC1788), EMC bus width of 8 bits, and support for RTC with battery-backed event recorder and wake-up from Deep power-down mode.

Technical Context

The LPC1778FBD144,551 implements a 3-stage Harvard-architecture Cortex-M3 core with integrated MPU, NVIC, and system tick timer, coupled with a multilayer AHB matrix that enables concurrent CPU, USB, Ethernet, and DMA access without arbitration delay unless contending for the same slave. Its memory subsystem includes 64 kB local-code SRAM, two 16 kB peripheral SRAM blocks accessible via independent paths, and 4032-byte EEPROM.

Peripheral interconnect uses split APB buses with write buffering to reduce CPU stalls, while dedicated clock domains support independent operation of USB PLL, RTC oscillator, and main PLL - enabling simultaneous full-speed USB communication, real-time event logging, and deterministic motor PWM generation without timing conflict.

Key Specifications

Pinout & Package

Package: LQFP144 (20 × 20 × 1.4 mm, SOT486-1), lead pitch 0.5 mm, 144 pins, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC1788FBD144,551, the LPC1778FBD144,551 removes LCD controller to lower cost and power, while retaining identical CPU performance and connectivity; versus LPC1776FBD208,551, it trades package size and I/O count for higher density integration in smaller PCBs with no flash/SRAM compromise.

Availability

LPC1778FBD144,551 is available at Aetrix Electronics and suitable for industrial motor control, networked appliance gateways, medical sensor nodes, and energy meter concentrators requiring stable component supply and long-term production continuity.

Supply support for LPC1778FBD144,551 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 applications, with deep expertise in ARM-based microcontrollers and embedded security.

The LPC177x series targets cost-sensitive, high-reliability industrial control applications where deterministic real-time performance, rich peripheral integration, and long-lifecycle support are essential - extending the legacy of NXP's LPC ARM portfolio into next-generation automation systems.

FAQ

What is the maximum operating frequency of the LPC1778FBD144,551?

The LPC1778FBD144,551 operates at a maximum CPU frequency of 120 MHz, achieved via its on-chip PLL driven by either the internal 12 MHz RC oscillator (trimmed to ±1%) or an external crystal (1–25 MHz). This frequency is sustained across the full industrial temperature range (−40 °C to +85 °C) under 3.3 V supply (2.4–3.6 V).

Does the LPC1778FBD144,551 include an LCD controller?

No, the LPC1778FBD144,551 does not include an LCD controller. Unlike the LPC1788 variant, the LPC1778 family omits the LCD interface block. This is confirmed in Table 2 of the datasheet, which lists "N" for LCD under the LPC1778FBD144 row - making it suitable for applications where display functionality is handled externally or not required.

How many GPIO pins are available on the LPC1778FBD144,551 in LQFP144 package?

The LPC1778FBD144,551 provides 109 general-purpose I/O pins in its LQFP144 package. This count is explicitly stated in Table 2 of the datasheet and reflects the reduced pin count versus the 208-pin variants (which offer up to 165 GPIOs), while maintaining full functional compatibility across shared peripherals like UARTs, CAN, and timers.

What is the External Memory Controller (EMC) bus width for the LPC1778FBD144,551?

The External Memory Controller (EMC) bus width for the LPC1778FBD144,551 is 8 bits. This is documented in Table 2 of the datasheet under the "EMC bus width (bit)" column for the LPC1778FBD144 entry - supporting asynchronous static memories (SRAM, ROM, NOR flash) but not SDRAM, unlike higher-pin-count variants with 16- or 32-bit EMC interfaces.

Does the LPC1778FBD144,551 support USB On-The-Go (OTG)?

Yes, the LPC1778FBD144,551 supports USB 2.0 full-speed Device/Host/OTG functionality with an on-chip PHY. Table 2 confirms "H/O/D" under the USB column, and Section 2.2 specifies dual-port USB OTG controller capability - enabling flexible role switching between peripheral and host modes in applications such as firmware update via USB stick or printer sharing.