LPC1774FBD144,551

Microcontrollers Overview

The LPC1774FBD144,551 is a 32-bit ARM Cortex-M3 microcontroller in an LQFP-144 package. It features 128 kB of flash program memory, 40 kB of SRAM (32 kB main, 8 kB peripheral), and 2048 bytes of EEPROM. The device operates at up to 120 MHz with a 3.3 V supply (2.4 V to 3.6 V). Key peripherals include two CAN channels, four UARTs, three SSP controllers, three I2C interfaces, one I2S interface, an 8-channel 12-bit ADC, and a 10-bit DAC. It supports USB 2.0 full-speed device mode.

Microcontrollers Feature Summary

• ARM Cortex-M3 processor with Nested Vectored Interrupt Controller (NVIC) and Memory Protection Unit (MPU)
• Integrated USB 2.0 full-speed dual-port device controller with on-chip PHY
• Dual-channel CAN controller for robust communication networks
• Eight-channel General Purpose DMA controller supporting multiple peripherals

Microcontrollers Applications

• Point-of-sale terminals
• Web servers
• Multi-protocol bridges
• Automation controllers
• HVAC systems

Microcontrollers Procurement Notes

Verify the complete part number including the ordering suffix ',551' to ensure correct packaging and tape-and-reel specifications. Confirm that the LQFP-144 package variant matches your PCB footprint requirements. Check the specific revision level against the manufacturer's datasheet to ensure compatibility with existing firmware and hardware designs.

Microcontrollers Selection Notes

Select this component when Ethernet or LCD capabilities are not required but high integration is needed. It serves as a functional replacement for older LPC23xx and LPC24xx series devices. Consider the 128 kB flash limit for complex applications requiring extensive code storage. Ensure the 40 kB SRAM allocation meets the system's real-time processing demands.

Microcontrollers Part Context

This device belongs to the NXP LPC178x/7x family of scalable mainstream 32-bit microcontrollers. The LPC1774 variant specifically excludes Ethernet and LCD controllers found in higher-end models like the LPC1788. It shares the same core architecture and pinout compatibility with the broader LPC1700 series, facilitating migration from legacy ARM7-based designs.

Microcontrollers Replacement Considerations

LPC1774FBD208,551

Microcontrollers FAQ

Does the LPC1774FBD144 support USB host mode?

No, the LPC1774FBD144 supports only USB 2.0 full-speed device mode. Host or OTG modes are available in other variants within the LPC178x/7x family.

What is the maximum operating frequency of the CPU?

The ARM Cortex-M3 processor in the LPC1774FBD144 can operate at frequencies up to 120 MHz.

How many general-purpose I/O pins are available?

The LPC1774FBD144 provides up to 109 general-purpose I/O (GPIO) pins, depending on the specific pin multiplexing configuration used.