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At 51mm x 18mm, the BR-LPC1347 is a very compact board that packs a punch. The ARM Cortex-M3 core can run at speeds of up to 72MHz and has 64kB of Flash and 8kB of RAM.

The LPC1347 has a built in USB transceiver that can be easily configured to function as any USB device. Additional serial communication interfaces include a USART, two SPI ports and an I2C port. It also features a 12-bit ADC with 8 channels capable of a sampling rate of up to 500k samples per second.

The LPC1347 has a pre-loaded USB bootloader that functions as a USB mass storage device on your PC. This means that programming is as simple as a drag and drop of the firmware file to the drive.

The BR-LPC1347 board has the same footprint as a 40-pin DIP IC package and includes the following hardware:

  • Power LED
  • Configurable user LED
  • Reset button
  • Mini USB connector
  • 12MHz oscillator
  • Low-dropout voltage regulator
  • Comms pin header that is compatible with our FR232RL TTL serial to USB breakout board

To get started, check out our Blinky application for the LPC1347 at GitHub or download here. We also have a tutorial, Introduction to the GNU toolchain for embedded ARM, that will help you get off the ground.

If the BR-LPC1347 is not what your looking for, then the more powerful BR-LPC1769 board with Ethernet might be of interest. If you’re looking for an ARM Cortex-M0 processor then the BR-LPC11U36 is for you.


  • Very compact size
  • Direct USB to the processor
  • Easy expandability
  • Powered from USB
  • Pin-for-pin compatible with the ARM Cortex-M0 BR-LPC11U36

Possible Applications:

  • USB to TTL UART converter
  • OLED display driver
  • USB to SPI or I2C interface

Microcontroller Features:

  • ARM Cortex-M3 r2p1 processor, running at frequencies of up to 72 MHz
  • ARM Cortex-M3 built-in Nested Vectored Interrupt Controller (NVIC)
  • System tick timer
  • 64 kB on-chip flash program memory with a 256 byte page erase function
  • 4 kB on-chip EEPROM data memory with on-chip API support
  • 12 kB SRAM data memory
  • 16 kB boot ROM with API support
  • Standard JTAG test interface for BSDL
  • Serial Wire Debug (SWD)
  • High-current source output driver (20 mA) on one pin (P0_7)
  • High-current sink driver (20 mA) on true open-drain pins (P0_4 and P0_5)
  • Four general purpose counter/timers
  • Programmable Windowed WatchDog Timer (WWDT)
  • Repetitive Interrupt Timer (RI Timer)
  • 12-bit ADC with eight input channels and sampling rates of up to 500 kSamples/s
  • USB 2.0 full-speed device controller
  • USART with fractional baud rate generation
  • Two SSP controllers with FIFO and multi-protocol capabilities
  • I2C-bus interface supporting the full I2C-bus specification and Fast-mode Plus
  • Internal low-power, low-frequency WatchDog Oscillator (WDO)
  • Four reduced power modes
  • Unique device serial number for identification

Microcontroller Data: