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Re: [lpc2000] Re: LPC's w/ ENC28J60 for ethernet via SPI

2006-01-09 by Tom Walsh

Tom Walsh wrote:

>Ryan Niemi wrote:
>
>  
>
>>>Have you looked at the Atmel AT91SAM7X?
>>>   
>>>
>>>      
>>>
>>I took a brief look, but availability concerns me.  Actually, while
>>getting into an alternate CPU discussion, I came up with an
>>interesting silicon cost comparison for some of my options.  These
>>prices below are based on single unit quantities priced via Digikey:
>>
>>LPC2292                  $13.46
>>CS8900A                   $8.36
>>256Kx16 SRAM              $4.41     Total:  $26.23
>>
>>EP9302                   $16.14
>>64Mb (4Mx16) SDRAM        $5.67
>>Micrel 10/100 PHY         $3.78
>>4Mb (512KB) SPI flash     $2.15     Total:  $27.74
>>
>>Hmm, $26.23 for an ARM7TDMI @ 60MHz, 256KB flash, 512KB SRAM, 10mbps
>>ethernet, vs. $27.74 for an ARM920T @ 200MHz, 512KB flash, 8MB SDRAM,
>>10/100 ethernet.  A whole $1.51 additional silicon cost.
>> 
>>
>>    
>>
>
>Then take the EP9302 and add:
>
>Previous cost:                $27.74
>SD Socket:                    $3.80
>SD 128Meg card:               $8.00
>64Mb (4Mx16) SDRAM            -$5.67
>32MByte (16Mx16) SDRAM        $12.54   Total: $46.41
>
>And you get a killer Linux powered embedded system!
>
>BTW, where did you find the cost of the EP9302?  I cannot seem to find 
>anyone but Cirrus that you can get those parts from (e.g. Nu-Horizons, 
>etc.).
>  
>

nm, I found them on Digikey.

TomW


-- 
Tom Walsh - WN3L - Embedded Systems Consultant
http://openhardware.net, http://cyberiansoftware.com
"Windows? No thanks, I have work to do..."
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