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Article #16367Re: HC11 EVB MC68HC24 PRU
From: technopagan priest
Date: Sat, 23 Jan 1993 19:47
Date: Sat, 23 Jan 1993 19:47
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In article <laird.727798045@pasture.ecn.purdue.edu> laird@pasture.ecn.purdue.edu (Kyler Laird) writes: >tedwards@wam.umd.edu (technopagan priest) writes: >>Hi! I think I just toasted the MC68HC24 PRU (port replacement >You idiot! What'd you do? Lay an input line across one of the >12V rails? (Gee, that's what I did...) >University Sales (Relations/.../?) at Motorola sent me a new one >when I told them I toasted mine. I almost ordered one from Digi- >Key or someone like that, but they wanted on the order of $35 for >the chip! Yeah, I think I probably dropped an input line on one of the power rails (DOH!). Unfortunately, I am not associated with the fine learning institution where I got it from, and also it is the old bigger EVB. I assume the new EVBs use the same PRU, am I right? What am I using it for? Well, I have a quad D/A converter, and I am using the HC11 to output digital X,Y positions for two galvometers to move a laser beam around to do some animation. Last night I was using the A/D converter on the HC11 to read an analog joystick for use in inputing the point positions, but somehere along the line, I messed up, the output ports went into multiplexed mode, and the PRU got too hot to touch... -Thomas
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Newsgroups: sci.electronics Path: arc1-ca.pugleaf.net!sparky!uunet!haven.umd.edu!wam.umd.edu!tedwards From: tedwards@wam.umd.edu (technopagan priest) Subject: Re: HC11 EVB MC68HC24 PRU Message-ID: <1993Jan23.194747.7830@wam.umd.edu> Sender: usenet@wam.umd.edu (USENET News system) Nntp-Posting-Host: rac2.wam.umd.edu Organization: University of Maryland, College Park References: <1993Jan23.024730.9720@wam.umd.edu> <laird.727798045@pasture.ecn.purdue.edu> Date: Sat, 23 Jan 1993 19:47:47 GMT Lines: 29