Lpc2000

Hi Robert

Your team could look at the I/O system of the PICF877. It is superb in 
it's choice of features. This chip was so well featured that microchip 
did a general purpose 16 bit processor (18F452) that used exactly the 
same I/O structure, and even made it pin compatable. It has:

    RTC with 32Khz Xtal driver and interrupt capable of waking from sleep
    SPI, I2C Serial etc
    A/D PWM
    Interupt on change inputs - these are VERY usefull.
    Abilility to sleep with almost no power, but wake up when anything
    happens.

I have built a 25 microamp data logger with this device.

What neither of these chip have of course is the ARM core and 32 bit 
peripherals etc which is why i have migrated to Philips

I am currently designing a system with a LPC2106 and a PICF877 - using 
the 877 as an I/O processor for the LPC2106.

Owen Mooney