Lpc2000

--- In lpc2000@yahoogroups.com, "Joel Winarske" <joelw@i...> wrote:
>
> Sean wrote:
> This is a pretty important document to have:
> http://sandisk.com/pdf/oem/ProdManualSDCardv1.9.pdf

Thanks, that's exactly what I needed:

------------
A proper, matched, switch on the socket side will indicate to the 
host that the card is write-protected or not. It is the
responsibility of the host to protect the card. The position of the 
write protect switch is un-known to the internal
circuitry of the card.
------------

> What current is running through the switches on the Olimex 
> design? Depending on the current it may be there to help maintain 
oxidation. 

They have Vcc -> 33kohm -> WP1 ... WP2 -> 2kohm -> GND

So since the internal circutry has no idea about this, if I don't 
care about the write protect, then I can just leave WP1 and WP2 not 
connected, so why would they do that?  Unless they were planning at 
some point in time to also connect WP1 to a GPIO on the micro?