William "Chops" Westfield wrote:
> Oh my; there are new PIC32s with ethernet and up to 128k of RAM (+512k  
> of flash.)
> THAT moves PIC32 into an interesting position, I think...  (Hmm.   
> Largest NXP ARM chip with ethernet has "98k" of RAM, which is closer  
> than I thought...)
> 
> Too bad they need an external Phy.  Those tend to be big, and power  
> hungry, and not very cheap.  But I guess that's what everyone is doing.

WIZnet W7100 has integrated 10/100 PHY, 32KB dedicated buffer RAM plus 64KB
XDATA RAM (it's an 8051 clone, with a separate core dedicated to TCP/IP).

PIC18F6xJ6x has integrated 10basteT PHY, but very limited RAM (8KB buffer
plus 3.5KB general-purpose).

I think the problem is that you can use the chip area for either a 100 Mbit
PHY, or for lots of RAM, but not both. The W7100 seems to be a decent
compromise, but it's rather limited in terms of other kinds of on-chip I/O
(one UART and a couple of timers).

-- Dzve Tweed
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