Lpc2000

Hello Owen,

we did some bench measurements, these will probably show up as typical
values in the data sheet for a later version:

If the device is in power down mode (the RAM content is kept and power
is supplied to Vdd), we measured approx. 150 uAs. The value is related
to the one voltage source 3.3V instead of having to provide 1.8V as
well. We have to generate the 1.8V internally, even during power down
because the RAM and the RTC run from 1.8V

The RTC itself can be buffered through a vbat pin. It uses approx.
15-20 uAs.  It is important to know that current from vbat is also
drawn during normal operation.

So, can't provide you with the 50 uAs requested but the value is MUCH
lower than the lpc2106 and you can log so much more data into the
flash than with an AVR Mega or a MSP430 but at the cost of a larger
battery.

Hope this helps, Robert

--- In lpc2000@yahoogroups.com, Owen Mooney <ojm@s...> wrote:
> I am looking at a new design for a very low power logger. I like the
LPC 
> 2106 very much  - but its not quite right, so I was going to use a PIC 
> (nasty after the luxury of a decent processor).
> 
> I need:
> 
>        Sub 50 microamps normal operation (idle or power down)
>        Ability to wake every second based on the RTC
>        Abilty to wake (on external interrupt and read the current value 
> in the RTC counter
> 
> I read the data sheet but no info on power consumption. Any one with
any 
> experience or ideas - in normal, power down and idle modes?
> 
> Any idea where I can get a user manual?
> 
> Owen Mooney