Shopping List for the Project

Page last updated 22 Oct 2010, by C Company. 0 replies

 

  1. Bread Board                           - Big one - 200Rs http://www.sunrom.com/p-269.html
  2. Wires                                      50 Rs                http://www.sunrom.com/p-270.html
  3. Bar Code reader                   3500 Rs                http://www.sunrom.com/p-908.html
  4. 16x4 Character LCD Display - Blue on White      http://www.sunrom.com/p-952.html
  5. Power Supply
  6. Small Keyboard
  7. multimeter http://www.sunrom.com/p-267.html 250Rs
  8. power supply http://www.sunrom.com/p-530.html 600Rs

 

For Power Supply, check below current rating/voltage rating

Technical reference

This mbed Microcontroller is based on a Cortex-M3 Core running at 96MHz, with 512KB FLASH, 64KB RAM and a load of interfaces including Ethernet, USB Device, CAN, SPI, I2C and other I/O.

Package

  • 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

mbed NXP LPC1768 Schematic

0 comments

You need to log in to post a comment