Lpc2000

Hi Jeff,

some measurement from our team:
Running at 60 MHz with peripherals enabled from Flash approx. 45 mAs,
running from RAM 52/53 mAs, external 12 MHZ PLL *5 to 60 MHz. All
preipehrals were anabled.

The core still uses 1.8V but the 1.8V are generated by a DC/DC
converter inside the chip.

Specification is 3V for function, reducing the voltage lower than that
is OK but we want to use the Brown Out Detect which hit somewhere
around 2.9V.  Absolute no problem until the BOD hits. We even tried to
just generate an interrupt with BOD at 2.9 and the device worked down
to approx. 2.6V where the lower threshold BOD hit us with a Reset. 
As far as our tests can tell, the LPC2138 works actually down to 2.6V
but we won't try that. The upper level BOD will be used in our design
to save a few critical parameters into the Flash and then we go to
Power Down. 

hth Bob


--- In lpc2000@yahoogroups.com, "wittrockjeff" <jwittrock@m...> wrote:
> 
> Does anyone have some rough estimates of supply current for the 
> LPC213x family running at 60MHz with peripherals enabled.  In 
> particular I want to use the LPC2138 device.
> 
> Active mode supply current is still <TBD> in the datasheet.
> 
> Since this device uses 3.3V for both the core and I/O, I'm wondering 
> how close it will be to the LPC210x family.  Does the LPC213x still 
> use 1.8V for the core, and just an internal regulator?
> 
> As an aside, I'm also wondering if the part will remain functional 
> (reliable?) if the supply voltage drops to 2.85V?
> 
> I would measure one myself, but don't have a board yet, just some 
> sample parts.
> 
> Thanks,
> Jeff W