Re: General purpose micro wanted
From: Ulf Samuelsson (ulf_at_NOSPAMatmel.com)
Date: 02/05/04
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Date: Thu, 5 Feb 2004 16:54:48 +0100
> At the moment, I want:
>
> * to decode IR signals and transfer them to my PC
> * to connect an IR transmitter to it which will receive signals from my PC
> * to connect a humidity/temperature sensor to it (to be polled by a PC)
> * to connect an LCD (hopefully something better than a 16x2 screen - maybe
> something colour?)
> * to drive some LEDs (will probably need extra components for this)
>
> Hopefully what I need is a bit clearer now. I want a micro (preferably
with
> a board) that will control and manage I/O to/from special devices (IR
RX/TX,
> temp sensors, LEDs etc.) from a PC.
>
> So, the choices at the moment are USB and Ethernet. I'm even sceptical
about
> USB because of USB 1.1/2.0 speed issues. Ethernet looks like a winner. I'm
> in a switched environment so I don't care if the device hogs its own
segment
> as long as it doesn't affect performance for other hosts on the switch.
>
> Which micro would suit me best? Any comments/suggestions welcome. The
whole
> Ethernet idea is quite new to me, actually.
>
>
> cheers,
>
> C3
Maybe you wantt o check out the AT91RM3400.
Has ARM7TDMI core running at 66 MHz.
96 kB SRAM (boots from external Dataflash)
100 pin PQFP
* USB Full Speed (12 Mbit)
* IrDA-1 (115 kbps) UART
* TWI to connect to I2C display
* I/O ports for LEDs.
* No ADC I am afraid but you can connect through SPI.
If you want Ethernet, then the AT91RM9200 will give you everything except a
graphic display.
Check out the Cogent CSB337 card (www.cogcomp.com) which has an external
display.
-- Best Regards Ulf at atmel dot com These comments are intended to be my own opinion and they may, or may not be shared by my employer, Atmel Sweden.
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