Z8000 parts question

From: Joe R. <rigdonj_at_cfl.rr.com>
Date: Fri May 14 13:13:08 2004

At 01:24 PM 5/13/04 -0400, you wrote:
>On 13 May 2004 at 9:57, Kane, David (DPS) wrote:
>
>> Only a very minor detail, but I beleive that the certain Zilog chip
>> designations also indicate the max clock speed. For instance the
>> Z0800110PSC is a Z8001 (Z08001.. portion), with a max clock speed of
>> 10MHz (..10.. portion)....
>
>The 1983 Zilog databook "Ordering Information" section designates speed
>grades by letter suffix. No suffix is 4 MHZ, "A" is 6.0 MHz, and "B" is 10
>MHz, so a 10 MHz Z8001 in a plastic DIP with a 0-to-70 C temperature range
>would be ordered as "Z8001B PS".
>
>However, two things occurred to me:
>
> 1. The parts predate or postdate the databook sufficiently that the
> ordering codes had changed. Are there obvious date codes on the chips?

   This one is dated 9509. I haven't checked any others. FWIW there is a
20.000MHz crystal right next to the CPU so I'm guessing that the CPU runs
at 20MHz and that that's what the "C" suffix means. The CPU is in a plastic
package so "PS" sounds correct for the package.


>
> 2. The parts aren't Zilog issue at all, but rather AMD (a second-source).
> Are there obvious Zilog (stylized "Z") or AMD (up/right-pointing
> arrow) logos on the parts?

   Nope, they are Zilog parts.

    Joe
Received on Fri May 14 2004 - 13:13:08 BST