LPCXpresso51U68
Overview
The LPCXpresso family of boards provides a powerful and flexible development system for NXP’s Cortex-M MCUs. The LPCXpresso51U68 board has been developed by NXP to enable evaluation of and prototyping with the LPC51U68 family of MCUs and its low power features make it as easy as possible to get started with your project. LPCXpresso is a low-cost development platform available from NXP supporting NXP’s ARM-based microcontrollers. The platform is comprised of a simplified Eclipse-based IDE and low-cost target boards which include an attached JTAG debugger. LPCXpresso is an end-to-end solution enabling embedded engineers to develop their applications from initial evaluation to final production.

MCU device and part on board is shown below:
Device: LPC51U68
PartNumber: LPC51U68JBD64
Getting Started with MCUXpresso SDK Package
Getting Started with MCUXpresso SDK GitHub
Release Notes
ChangeLog
Driver API Reference Manual
This section provides a link to the Driver API RM, detailing available drivers and their usage to help you integrate hardware efficiently.
Middleware Documentation
Find links to detailed middleware documentation for key components. While not all onboard middleware is covered, this serves as a useful reference for configuration and development.