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lpc2210 design concerns

lpc2210 design concerns

2005-03-03 by xlpeng

Hi,

LPC2210 looks very good for my design, it's low cost, lots of 
peripherals, relatively fast and most of all, expandable. But I still 
have some concerns about this chip:

1. Speed concern
   If a normal flash (90ns access time) is used, then the program is 
running at very low speed since access flash will take lots of time. 
Even a regular SRAM won't help that much. We do need the program 
running as fast as possible to interface an Ethernet chip. Will 3 
stage pipeline help the speed?

2. Board support package or just .h header file concern
   We do need a low cost tool, the lpc221x.h in gnuarm points to 
lpc2114.h. Even lpc22xx.h in my kickstart version of Keil only says 
LPC2214/LPC2219/LPC2224/LPC2229. Is there a dedicated lpc2210.h?

3. Debug concern
   It's the best if an emulator can program the external flash 
directly and then debug from there. Otherwise, how to setup the 
environment to download and debug?

4. Reference design
   Unlike Freescale, I can't find a reference design from philips 
website.
   
5. Anyone here know if LPC2134/LPC2136 will PIN to PIN compatible 
with LPC2138? Plan to use one 2106 to control several 213xs. Can find 
any LPC2134/LPC2136 on the distribution channels.

Any sugguestion will be appreciated.

Want to use ARM, but still missing the widely support and user groups 
for AVR. There are free toolchain(WINAVR), all the peripheral driver 
library, etc.

Thanks,

xlpeng

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