Re: Assignment 5

Ed Casas (edc@ece.ubc.ca) Thu, 13 Apr 2000 23:22:21 -0700 

Date: Thu, 13 Apr 2000 23:22:21 -0700
From: Ed Casas <edc@ece.ubc.ca>
Subject: Re: Assignment 5



On Thu, Apr 13, 2000 at 05:33:43PM -0700, Matt Lai wrote:
> I got 2 questions for the solution of assignment
> 
> In table 4.
> 
> It defines that tAW as address width but i learned from the
> data sheet that it is the time for "address valid to End of
> Write"...So for the guaranteed response. Shouldn't it is merely
> equal to tDAWH?????
>
> same problem as for tCW.

Yes, like you say, these two expressions are wrong.  They should
be just tDAWH.  I got carried away with cut-and-paste and forgot
to change the expresssions :(.

Also in the last line of Table 1, the guaranteed value value for
tHDRH should be tOH (hold time), not tDF (time to hi-z).

There is no change in any of the guaranteed values or the
margins.

These particular specifications were not among those that were
marked.

-- 
Ed Casas   edc@ece.ubc.ca   http://casas.ece.ubc.ca   +1 604 822-2592