Re: A86: Re: LCD stuff

To: assembly-86@lists.ticalc.org
Subject: Re: A86: Re: LCD stuff
From: rabidcow@juno.com
Date: Mon, 11 Oct 1999 22:19:54 -0700
Reply-To: assembly-86@lists.ticalc.org

the ti86 doesn't use a normal z80 chip, it uses a z80 packaged inside an
asic, possibly with very different power requirements and pinout.  if you
open up your ti86, there's no chip that says "z80" or "8400" or whatever
the part # would be for a z80.

-josh

On Fri, 19 Nov 1999 17:30:09 -0800 Cassady Roop <croop@oregontrail.net>
writes:
>
>my zilog data book specifies a single polarity, 5 volt power supply.  
>It
>does not say what the voltage requirements are for low-power mode or
>anything, but I don't think there are any 3v z80's.
>
>Cassady Roop
>
>TGaArdvark@aol.com wrote:
>> 
>> > However, I just realized awhile ago... the backup batt is only 
>3volts.
>> > Does the z80 only use 3v when in low power mode?  If it still uses 
>the
>> > normal 5v, then it can't run from the backup battery only.
>> 
>> Someone correct me if I'm wrong.  First off, 4 AAA's is 6V.
>> Second, I think the Z80 they use is a 3 volt chip anyway, and
>> they step it down with a current divider.  The RAM and link
>> take up the full 6V.  Am I correct here?  Anyone know?
>

___________________________________________________________________
Get the Internet just the way you want it.
Free software, free e-mail, and free Internet access for a month!
Try Juno Web: http://dl.www.juno.com/dynoget/tagj.