Re: [uCsimm] Are the uCsimm I/O pins 5V Tolerant?

From: Sam Saprunoff (sams2@telusplanet.net)
Date: Thu Feb 03 2000 - 19:21:15 EST


Thanks Dave for pointing out this "Note"... I have been looking for this
type of info, but only in the Electrical section...

Cheers,

Sam

----- Original Message -----
From: David Williams <davidwilliams@ozemail.com.au>
To: <ucsimm@uClinux.com>; Sam Saprunoff <sams2@telusplanet.net>
Sent: Thursday, February 03, 2000 3:02 PM
Subject: Re: [uCsimm] Are the uCsimm I/O pins 5V Tolerant?

> Hi Sam,
>
> On page 2-3 of the 68EZ328 user manual it says
>
> "Note: All pins, except EXTAL, support TTL levels. When EXTAL is used as
> an input
> clock, it needs a CMOS level. To ensure proper low-power operation, all
> inputs
> should be driven to CMOS level. More power is consumed when you use a
> TTL
> level to drive those inputs."
>
> I think this is the info you require. So 5V is OK, but will cause system
> to consume more power when going into low power modes.
>
> Dave.
>
>
> This message resent by the ucsimm@uclinux.com list server
http://www.uClinux.com/
>

This message resent by the ucsimm@uclinux.com list server http://www.uClinux.com/



This archive was generated by hypermail 2b30 : Sun Apr 07 2002 - 00:01:34 EST