Lpc2000

At 09:21 AM 7/2/04 +0200, you wrote:
>"right" time to start an LPC project, that time is now! I've made a simple
>datalogger with an SD card,GPS and GSM modem in a similar design I currently
>use with an atmel avr, I would appriciate if someone would take a breif look
>at my schematic and see if I have made any obvious mistakes with the LPC and
>its bootloader select pin etc.

A couple of suggestions.

-  Add some sort of power monitor/power on reset chip.  For an evaluation 
board not necessary.
- Add on a standard ISP header 
http://www.open-research.org.uk/ARMuC/index.cgi?Standard_ISP_Header  for 
serial port connection and programming.

One question.  Are you sure that there is no condition under which Data 
Carrier from U4 will not be high after a reset? IF it is ever low or 
floating after a reset you will run into problems.

On a related note.  I believe the LPC starts with its pins as inputs.  That 
means that any you are using as outputs will float during the period from 
reset until initialization.  I noticed couple of lines being used as 
outputs that appeared not to have the appropriate pull-up or pull-down 
resistors.

Robert