NXP LPC4350 Based Evaluation Boards

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NXP LPC4350 Based Evaluation Boards

Based on the LPC4350FET256 ARM Cortex-M4 digital signal controller with an ARM Cortex-M0 co-processor, 256 kB of internal SDRAM, Ethernent, high-speed USB and advanced configurable peripherals.


General Description

The LPC4350-DB1 evaluation board allows you to quickly prototype the embedded applications. This development board is based on the LPC4350FET256 dual core ARM Cortex-M4 & Cortex-M0 MCU.

The LPC4350FET256 microcontroller comes without an internal flash memory. You can use an external 16MBit flash to store your firmware. The external flash is assembled on all LPC4350-DB1 board modifications. If you need a microcontroller with internal flash, take a look at our LPC4357-DB1 evaluation board.

The LPC4350-DB1 development board is available in several modifications. Some of the modifications contain external 64 Mbit SDRAM and/or assembled side connectors.

There are many optional extension boards, that can be attached to the LPC4350-DB1 side connectors.


LPC4350-DB1 Development Board Components

The LPC4350-DB1 development board contains most of the extensively used components. Its peripheral support can be easily extended by the LPC4350-DB1 PCB soldering options and wide range of extension boards.

The LPC4350-DB1 evaluation board hardware components are:

  • LPC4350FET256 - dual-core ARM Cortex-M4 DSP controller with Cortex-M0 coprocessor.
  • USB 2.0 High-speed interface - with mini USB type-B connector.
  • 10/100MBit Ethernet interface - LPC4350-DB1 evaluation board contains assembled external PHY and connector.
  • ARM Standard JTAG/SWD connector - 20-pin 2.54mm (0.1 inch)
  • External NOR flash - 16MB Spansion S29AL016J70TFI01
  • 4 user push-buttons + reset button
  • 5 user controlled LEDs - 4 green LEDs + 1 red LED
  • Boot select jumpers

LPC4350-DB1 PCB Soldering Options

LPC4350-DB1 evaluation board can be extended by soldering the following components:

  • External SDRAM - we have tested the board with Micron MT48LC4M32B2-7 Synchronous DRAM.
  • Real-Time Clock (RTC) - there are placeholder for RTC crystal and connection points for external power supply.
  • Cortex Debug Connector - the small and low cost 10-pin 1.27mm (0.05 inch) connector can be assembled to access SWD, SWV, and JTAG signals available on Cortex-M4 and Cortex-M0 processors.
  • Cortex Debug + ETM Connector - this small 20-pin 1.27mm (0.05 inch) connector can be assembled to access SWD, SWV, JTAG, and ETM (4-bit) signals available on Cortex-M4 and Cortex-M0 processors.

Debug Instruments


The LPC4350 Demoboard has JTAG connector. This connector can be used for debugging process. On the Demoboard J-TAG connector is pointed as the J1.

Also additional debug J-TAG/SWD and Cortex Debug+ETM connectors can be soldered:


Serial Wire Debug (SWD) provides a debug port for severely pin limited packages, often the case for small package microcontrollers but also complex ASICs where limiting pin-count is critical and can be the controlling factor in device costs.

SWD replaces the 5-pin JTAG port with a clock + single bi-directional data pin, providing all the normal JTAG debug and test functionality plus real-time access to system memory without halting the processor or requiring any target resident code. SWD uses an ARM standard bi-directional wire protocol, defined in the ARM Debug Interface v5, to pass data to and from the debugger and the target system in a highly efficient and standard way. As a standard interface for ARM processor-based devices, the software developer can count on a wide choice of interoperable tools.

Cortex Debug+ETM

The Cortex Debug+ETM connector interface can access the Embedded Trace Macrocell (ETM) TRACECLK and TRACEDATA signals. The four TRACEDATA signals provide a high-speed data path for capturing instructions.

Documentation and Downloads

Online Support

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Hardware Information

Title Links Description
Connectors and Jumpers Port and pins assignment on available connectors and jumpers description.
Schematics  Board schematics.
Mechanical Drawing  Board mechanical drawing.


Title Links Description
Software examples The LPC4350-DB1, LPC4357-DB1 and LPC1850-DB1 development boards are supplemented with a large number of software examples. Almost all of the examples can be compiled using either IAR Embedded Workbench or Keil MDK-ARM.