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Re: [avrdude-dev] avrftdi TPI support
From: |
Joerg Wunsch |
Subject: |
Re: [avrdude-dev] avrftdi TPI support |
Date: |
Fri, 3 May 2013 21:57:30 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
As Hannes Weisbach wrote:
> > Actually, it's more. I measured about 550 µA @ 12 V, but with a
> > few 100 mV more, it could be about 2 mA already.
> Hm. Too much current to supply from TPICLK (it's not running
> continuously). Well, a ring oscillator/voltage tripler, then.
Or, just leave it to the user to supply the 12 V externally when
they need to handle a disabled /RESET pin. After all, other
TPI-capable programmers (like the AVRISPmkII) don't handle this
either.
--
cheers, Joerg .-.-. --... ...-- -.. . DL8DTL
http://www.sax.de/~joerg/
Never trust an operating system you don't have sources for. ;-)
Re: [avrdude-dev] avrftdi TPI support, Ing. Daniel Rozsnyó, 2013/05/05
Re: [avrdude-dev] avrftdi TPI support, René Liebscher, 2013/05/05