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Re: [avr-gcc-list] New ATmega parts

From: Uwe Bonnes
Subject: Re: [avr-gcc-list] New ATmega parts
Date: Fri, 3 Oct 2003 14:05:42 +0200

>>>>> "Russell" == Russell Shaw <address@hidden> writes:

    Russell> Uwe Bonnes wrote:
    >> did you find any announcement of an MEGA running with 16 MHz at 3.3V?
    >> Modern FPGAs are no longer 5 Volt tolerant, so 3.3 Volt is needed as
    >> supply. Trading FPGA speed agains CPU speed is a drawback. And
    >> Busswitches to translate between 3.3 and 5 Volts) are hard to get
    >> by. And Level Translator imply a waitstate, as they eat a lot of the
    >> 16.6 ns Access time needed for 0-weaitstate access.

    Russell> xilinx spartan-2 and altera acex inputs are 5V tolerant.

I talked about "modern" FPGA. Spartan 2 e.g. has a lot less Block Ram and no
multipliers like e.g. Spartan 3. But I admit that spartan 2 is still the
workhorse here.

Uwe Bonnes                address@hidden

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------

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