Re: Handling multiple NAND chips

Charles Manning
2003-07-26T00:23:19Z

On Saturday 26 July 2003 03:12, J.D. Bakker wrote:
> Hi all,
>
> I have an expansion board for the LART (an embedded computer based on
> the DEC/Intel StrongARM) with eight NAND flash devices on it. As
> suggested by the Toshiba datasheet, they share data, CLE, ALE, nWE
> and nRE and RDY. Each chip has its own nCE line.
>
> I would like to use all eight chips with mtdconcat and YAFFS. Given
> the above, how should I hook the eight NANDs up to the mtd layer ?
> I've gone through CVS, but haven't found any hints in The Source.
>
David has given some answaers.

One thing to watch out for: some NAND chips have very high pin capacitance
and a fan-out of 8 might get a bit freaky.

You'll need quite a bit of RAM for holding various data structures. :-).

-- CHarles