This is a simple break-out board for
NXP LPC111x microcontrollers in 33-pin HVQFN33 packages. It should also work with LPC1342 and LPC1343 microcontrollers
in the same package, but I have not tested this.
The board includes space for two 100 nF 0805 SMD decoupling capacitors,
as well as for a through-hole HC49 crystal and its (also 0805 SMD) load capacitors if required. These are the only
components that need to be close to the device.
All pins (except those for the crystal) are brought out to a pair of eight-by-two headers on a 0.1 inch (2.54 mm) pitch,
suitable for plugging into a wide range of commercial prototyping boards with isolated pads. The spacing between the headers is
such that it can also be used with this excellent prototyping board.
The board is not designed for use with the kind of breadboard that has groups of five contacts wired together in rows.
The schematic is
and the Gerber files for the board are
These files are made available under the
Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License (CC BY-NC-SA 3.0).
|PIO1_0 ||16 ||15 ||PIO0_11 |
|PIO1_2 ||14 ||13 ||PIO1_1 |
|PIO1_4 ||12 ||11 ||PIO1_3 |
|PIO3_2 ||10 || 9 ||PIO1_11 |
|PIO1_6 || 8 || 7 ||PIO1_5 |
|PIO2_0 || 6 || 5 ||PIO1_7 |
|PIO0_1 || 4 || 3 ||PIO0_0 |
|VDD || 2 || 1 ||VDD||
|PIO1_10 ||16 ||15 ||PIO0_10 |
|PIO0_9 ||14 ||13 ||PIO0_8 |
|PIO0_7 ||12 ||11 ||PIO0_6 |
|PIO3_5 ||10 || 9 ||PIO3_4 |
|PIO1_9 || 8 || 7 ||PIO0_5 |
|PIO0_4 || 6 || 5 ||PIO0_3 |
|PIO0_2 || 4 || 3 ||PIO1_8 |
|GND || 2 || 1 ||GND |
I have a small number of spare unpopulated printed circuit boards like the one shown in the picture available
in exchange for a donation to a charity as indicated in the bar to the right. Please get in touch if you are interested via the e-mail address
on the home page.
Note that the IC is a fine-pitch leadless device with a central ground pad on its underside
and is difficult to solder successfully without suitable equipment; the whole board
measures only 20 mm by 25 mm.