LPC2290 and External FLASH Memory Throughput

Started by kaiandxiulpc2000 November 23, 2005
I know the internal FLASH on the family is capable of 60MHz peak
operation.

I have a lot of newbie type questions on using external FLASH with the
LPC229x parts.

What kind of speed can I realistically achieve with the FLASH-less
LPC2290?

What type of specific FLASH device can that be done with (examples of
Spansion or Intel StrataFlash; NOR with burst mode)?



An Engineer's Guide to the LPC2100 Series

On 11/23/05, kaiandxiulpc2000 <kaiandxiulpc2000@kaia...> wrote:
> I know the internal FLASH on the family is capable of 60MHz peak
> operation.
>
> I have a lot of newbie type questions on using external FLASH with the
> LPC229x parts.
>
> What kind of speed can I realistically achieve with the FLASH-less
> LPC2290?
>
> What type of specific FLASH device can that be done with (examples of
> Spansion or Intel StrataFlash; NOR with burst mode)?
>

Hmm, would it be possible to attach both external flash and external
RAM? Boot up, the first thing you do is copy external flash to ram and
run out of there?



On Wed, 23 Nov 2005 19:07:08 -0500, Michael Glaum wrote:

>On 11/23/05, kaiandxiulpc2000 <kaiandxiulpc2000@kaia...> wrote:
>> I know the internal FLASH on the family is capable of 60MHz peak
>> operation.
>>
>> I have a lot of newbie type questions on using external FLASH with the
>> LPC229x parts.
>>
>> What kind of speed can I realistically achieve with the FLASH-less
>> LPC2290?
>>
>> What type of specific FLASH device can that be done with (examples of
>> Spansion or Intel StrataFlash; NOR with burst mode)?
>>

>Hmm, would it be possible to attach both external flash and external
>RAM? Boot up, the first thing you do is copy external flash to ram and
>run out of there?

IIRC the fastest the external bus will run on an LPC229x is 1/3 the speed
of internal flash.

Regards
-Bill Knight
R O SoftWare &
http://www.theARMPatch.com