Lpc2000

--- In lpc2000@yahoogroups.com, "seangra" <sgraham@o...> wrote:
> Got a question here.  I have a whole pile of 512KB SRAM memory chips 
> (8-bit wide access, 19 address lines) and I would like to use them as 
> a kind of "swap file" for SRAM usage, so I don't care too much about 
> speed of access.  What would be the best way of hooking one of these 
> up to a 2438 or 2338?  Directly is a bit of a pain because there 
> aren't any large blocks of I/O pins available (without constantly 
> reconfiguring the pins), I could use some external latches to save 
> some pins, but then again a small 8051 uC with 8KB Flash and external 
> memory bus and SPI/I2C costs $1.50, so if it's going to cost much in 
> external components then I'd be better off just adding in an 8051 as a 
> memory controller...
> 
> Anyone here have any better ideas?
> 
> Thanks!

Hi,
what are 2438 and 2338 ? I suppose you meant LPC but I failed to find such chips on Philips website. Maybe LPC2138 and LPC2148 implied ?
Then you should think about using some of the LPC22XX series with external memory interface. Their main disadvantage is a limited amount of flash & ram. But maybe it does not matter for your project...