Lpc2000

I've got an overview of what I'm thinking of going with for the 
evaluation card.  < http://tinymicros.com/embedded/LPC210x >

Basic goals:  Have several of each bus type supported, i.e., several SPI 
peripherials, several I2C, and several 1-wire.  Try to make devices 
generally useful.

All devices are 3.3V.  All devices can be disconnected from Vcc and 
their respective control signals via jumpers (can you say :lots of 
jumpers"?).  In addition to the two JTAG interfaces being available, a 
Wiggler type interface is built-in.  Also the "hands-off" ISP 
programming mode is supported. 

One DB-9 for serial port 0 (2 lines), one DB-9 for serial port 1 (with 
all 8 control signals).

Where signals conflict, jumpers will allow selecting the use of one set 
or the alternate set.  All I/Os are available on 2 headers.  By removing 
the device jumpers, the LPC210x can be completely unperipherialed.  By 
removing the device Vcc jumpers, one should be able to measure currents 
for a given configuration, such as "how much current will just the 
LPC2106 + SD card pull?". 

Reasonable power supply for on-board devices, plus a fair chunk of 
capacity for users circuity.  I'm considering either putting jumpers on 
the 3 Vcc rails, or 1 ohm resistors, for current measurement.  Also 
including several points to attach a 'scope ground (likely pads for a .1 
or .2 inch wire loop).

There will probably be no prototype area.  However, the I/O connectors 
will be arranged so that the user can plug in a card on Vector board on 
.1 centers, and be able to get power, I/O, and control signals.  
Prototyping area costs real money, and I personally hate defacing 
boards.  If there's enough feedback, I'll add it on.  Please specify how 
much area you'd want, to .1 inch resolution.

The SD/MMC card connector will support the physical SD card.  I had 
planned on only supporting the SPI mode, but there's several uncommitted 
I/O lines on the processor, so I may wire those up (with jumpers, of 
course) to support SD mode.

The A/D is an 8 channel 10 bit part.  One of the MCP23016 I/O expanders 
will have 8 LEDS and 8 switches (drawing shows pushy buttons, they'll 
actually be rockers).  The other MCP23016 pins will be available on a 
2x10 header.  NVRAM shown is a Ramtrom FRAM, any 24CL64 device should 
work (pin outs are the same).  RTC will have a battery (not shown), 
diode OR'ed in with Vcc.  DS2405 1-wire switch has LED to indicate 
state.  I2C devices with interrupt lines will be jumperable to EINT0, 
EINT1 or EINT2.

I think that's everything.  I'll be doing schematics over the weekend, 
most likely.  If you have any ideas, I'd love to hear them.

    --jc