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mbed NXP LPC1768

Table of Contents

  1. Technical Reference

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mbed NXP LPC1768 (see all)

This mbed Microcontroller board is based on the NXP LPC1768, with a 32-bit ARM Cortex-M3 core running at 96MHz, 512KB FLASH, 32KB RAM and lots of interfaces including built-in Ethernet, USB Host and Device, CAN, SPI, I2C, ADC, DAC, PWM and other I/O interfaces.

1768 pinout
mbed NXP LPC1768 pinout card

This pinout shows the commonly used interfaces and their locations. Note that all the numbered pins (p5-p30) can also be used as DigitalIn and DigitalOut interfaces.

The mbed NXP LPC1768 is one of a range of mbed Microcontrollers packaged as a small 40-pin DIP, 0.1-inch pitch form-factor making it convenient for prototyping with solderless breadboard, stripboard, and through-hole PCBs. It includes a built-in USB programming interface that is as simple as using a USB Flash Drive. Plug it in, drop on an ARM program binary, and its up and running! It is our most full featured board and is great for all kinds of general prototyping. If you're not sure which mbed to get, this is your best choice.

Technical Reference

Form-factor

  • 40-pin DIP package
  • 0.1" pitch, 0.9" pin spacing
  • 54mm x 26mm

Power

  • Powered by USB or 4.5v - 9.0v appiled to VIN
  • <200mA (100mA with Ethernet disabled)
  • Real-time clock battery backup input VB
  • 1.8v - 3.3v Keeps Real-time clock running
  • Requires 27uA, can be supplied by a coin cell
  • 3.3v regulated output on VOUT to power peripherals
  • 5.0v from USB available on VU (only available when USB is connected!)
  • Current limited to 500mA
  • Digital IO pins are 3.3v, 40mA each, 400mA max total

Pins

  • Vin - External Power supply to the board
    • 4.5v-9v, 100mA + external circuits powered through the Microcontroller
  • Vb - Battery backup input for Real Time Clock
    • 1.8v-3.3v, 30uA
  • nR - Active-low reset pin with identical functionality to the reset button.
  • Pull up resistor is on the board, so it can be driven with an open collector
  • IF+/- - Reserved for Future use

The microcontroller I/O is all 3.3v logic, but 5v tolerant. A digital pin can drive 40mA, up to a total of 400mA.

mbed NXP LPC1768 Schematic

mbed NXP LPC1768

NXP LPC1768 MCU

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