Lpc2000

--- In lpc2000@yahoogroups.com, Alaric B Snell <alaric@a...> wrote:
> berrycake33 wrote:
> > 
> > Has anybody implemented NAND flash driver on LPC210x ?
> > 
> > Now we are considering using LPC2106 in our project which needs
> > a NAND flash to storage data.
> > Two UARTs, I2C and SPI are all used for other functions.
> > If p0.23 to p0.31 is used for NAND flash data pins, it will occupy 
> > the pins for JTAG2, so that we can't use JTAG to debug anymore.
> 
> Why is the I2C and SPI all used up? Do you really have the entire 
I2C 
> address space used up? Why can't you spare one of the GPIO lines as 
an 
> SPI chip select and have an SPI flash?

SPI gives up to about 128kbytes in a single chip. With NAND flash you 
can get up to 256MBytes in a single chip.

Also, NAND write speed is far faster.

-- Charles