Lpc2000

Looking at the LPC210x manual, the real time clock:

1) Needs to be set up for the crystal frequency / PLL settings

2) Will not tick during Power Down mode

This means that the contents of the clock are a bit fragile, really - 
suggesting it will be better used as a local 'cache' of an external 
seperately-clocked real time clock unit that's slow to access (I2C or 
similar), loaded from it during startup or return from power down mode 
after setting up the PLL and the RTC divider registers. Unless you have 
a setup that's rarely reset and never put into power down mode, it's not 
all that useful, as I see it.

Anyone else had any thoughts about it? It would have been nice if they 
provided an external 32,768Hz clock input pin to run the RTC off of when 
the MHz oscillator was down!

On the other hand, it occurs to me that the PLL seems amply capable of 
producing processor clock frequencies far in advance of the rated 60MHz 
- overclocking! How soon before we see huge copper heatsinks with fans 
for LPC2100s, eh? ;-)

ABS