Forums

Config Register

Started by bal_gill21 February 18, 2005

Hi all,
Is EEPROM normally enabled or disabled in the CONFIG register?. It is
bit zero (EEON), the manual just says its default erased state is
EEPROM enabled. Thanks

Bal




Re: Config Register

In a message dated 2/18/05 4:11:15 P.M. Eastern Standard Time,
writes:

Is EEPROM normally enabled or disabled in the CONFIG register?. It is
bit zero (EEON), the manual just says its default erased state is
EEPROM enabled. Thanks

=======================
Depends on the HC11xx part number.... an HC11F1 has ram, rom AND eeprom....
sometimes you want to use an external eeprom... if you want the reset vectors
in your external eeprom to be used, you need to switch off the internal one.
Might want external ram, and need the internal eeprom switched in. What part
do you have?



I have a 68hc711e9 part with 12k EPROM, 512k RAM and 2k EEPROM. I am
not using any external memory.

--- In , BobGardner@a... wrote:
>
> In a message dated 2/18/05 4:11:15 P.M. Eastern Standard Time,
> bal_gill21@y... writes:
>
> Is EEPROM normally enabled or disabled in the CONFIG register?. It
is
> bit zero (EEON), the manual just says its default erased state is
> EEPROM enabled. Thanks >
>
> =======================
> Depends on the HC11xx part number.... an HC11F1 has ram, rom AND
eeprom....
> sometimes you want to use an external eeprom... if you want the
reset vectors
> in your external eeprom to be used, you need to switch off the
internal one.
> Might want external ram, and need the internal eeprom switched in.
What part
> do you have? >




In a message dated 2/18/05 4:25:57 P.M. Eastern Standard Time,
writes:

I have a 68hc711e9 part with 12k EPROM, 512k RAM and 2k EEPROM. I am
not using any external memory.
==================
My 'pink book' says its on in an E2.... its at $b600... try and burn a byte
and read it back!


" I have a 68hc711e9 part with 12k EPROM, 512k RAM and 2k EEPROM. I am not
using any external memory."

An E9 with "512k RAM and 2k EEPROM"

WOW! Tell us where we can get some of those puppies!!!!!!! --- Avoid computer viruses, Practice safe hex ---

-- Specializing in small, cost effective
embedded control systems --

http://www.smithmachineworks.com/embedprod.html Robert L. (Bob) Smith
Smith Machine Works, Inc.
9900 Lumlay Road
Richmond, VA 23236 804/745-2608
----- Original Message -----
From: "bal_gill21" <>
To: <>
Sent: Friday, February 18, 2005 4:21 PM
Subject: [m68HC11] Re: Config Register >
> I have a 68hc711e9 part with 12k EPROM, 512k RAM and 2k EEPROM. I am
> not using any external memory.
>
> --- In , BobGardner@a... wrote:
> >
> > In a message dated 2/18/05 4:11:15 P.M. Eastern Standard Time,
> > bal_gill21@y... writes:
> >
> > Is EEPROM normally enabled or disabled in the CONFIG register?. It
> is
> > bit zero (EEON), the manual just says its default erased state is
> > EEPROM enabled. Thanks
> >
> >
> >
> >
> > =======================
> > Depends on the HC11xx part number.... an HC11F1 has ram, rom AND
> eeprom....
> > sometimes you want to use an external eeprom... if you want the
> reset vectors
> > in your external eeprom to be used, you need to switch off the
> internal one.
> > Might want external ram, and need the internal eeprom switched in.
> What part
> > do you have?
> >
> >
> > --
------
> Yahoo! Groups Links
>
> a.. To





oops! that puppy is a rare breed, it was meant to read
512 Bytes of On-Chip RAM
512 Bytes of On-Chip EEPROM
12 Kbytes of On-Chip EPROM

--- In , "Bob Smith" <bobsmith5@v...> wrote:
> " I have a 68hc711e9 part with 12k EPROM, 512k RAM and 2k EEPROM. I
am not
> using any external memory."
>
> An E9 with "512k RAM and 2k EEPROM"
>
> WOW! Tell us where we can get some of those puppies!!!!!!! > --- Avoid computer viruses, Practice safe hex ---
>
> -- Specializing in small, cost effective
> embedded control systems --
>
> http://www.smithmachineworks.com/embedprod.html > Robert L. (Bob) Smith
> Smith Machine Works, Inc.
> 9900 Lumlay Road
> Richmond, VA 23236 804/745-2608
>
> bobsmith5@v...
>
> ----- Original Message -----
> From: "bal_gill21" <bal_gill21@y...>
> To: <>
> Sent: Friday, February 18, 2005 4:21 PM
> Subject: [m68HC11] Re: Config Register > >
> > I have a 68hc711e9 part with 12k EPROM, 512k RAM and 2k EEPROM. I
am
> > not using any external memory.
> >
> > --- In , BobGardner@a... wrote:
> > >
> > > In a message dated 2/18/05 4:11:15 P.M. Eastern Standard Time,
> > > bal_gill21@y... writes:
> > >
> > > Is EEPROM normally enabled or disabled in the CONFIG
register?. It
> > is
> > > bit zero (EEON), the manual just says its default erased state
is
> > > EEPROM enabled. Thanks
> > >
> > >
> > >
> > >
> > > =======================
> > > Depends on the HC11xx part number.... an HC11F1 has ram, rom AND
> > eeprom....
> > > sometimes you want to use an external eeprom... if you want the
> > reset vectors
> > > in your external eeprom to be used, you need to switch off the
> > internal one.
> > > Might want external ram, and need the internal eeprom switched
in.
> > What part
> > > do you have?
> > >
> > >
> > >
> >
> >
> >
> >
> >
> > ------------------------------
--------
> ------
> > Yahoo! Groups Links
> >
> > a.. To
> >
> >