Lpc2000

LPC2104: which pin selects bootloader?

Leon's schematic shows P0.14/EINT1.

The Olimex '2106 schematic shows P0.14/EINT1.

Page 177 of the Philips LPC2106/205/2104 UM (sep 17 2003) claims that P0.14
determines whether the chip boots to the bootloader or user code.

BUT, page 37 of the very same user's manual gives the boot select function
to pin /EINT0. (Which is shared with P0.16!)

So, what's the real story here?  I didn't notice this mentioned in the FAQ,
so maybe I'm the first to be confused by this.


--
newell

Scott Newell wrote:

>LPC2104: which pin selects bootloader?
>
>Leon's schematic shows P0.14/EINT1.
>
>The Olimex '2106 schematic shows P0.14/EINT1.
>
>Page 177 of the Philips LPC2106/205/2104 UM (sep 17 2003) claims that P0.14
>determines whether the chip boots to the bootloader or user code.
>
>BUT, page 37 of the very same user's manual gives the boot select function
>to pin /EINT0. (Which is shared with P0.16!)
>
>So, what's the real story here?  I didn't notice this mentioned in the FAQ,
>so maybe I'm the first to be confused by this.
>
>  
>

I think there's a mistake on page 37. It's definitely P0.14 for 
selecting the boot loader.

Leon


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At 10:26 AM 12/28/04 -0600, you wrote:

>LPC2104: which pin selects bootloader?
>
>Leon's schematic shows P0.14/EINT1.
>
>The Olimex '2106 schematic shows P0.14/EINT1.
>
>Page 177 of the Philips LPC2106/205/2104 UM (sep 17 2003) claims that P0.14
>determines whether the chip boots to the bootloader or user code.
>
>BUT, page 37 of the very same user's manual gives the boot select function
>to pin /EINT0. (Which is shared with P0.16!)

See also 
http://www.aeolusdevelopment.com/Documentation/ISP_LPC210X_revC.pdf and 
http://www.aeolusdevelopment.com/Documentation/AE0KT100_Schematic_and_Bill_of_Material.pdf 


They agree with the P0.14 choice and I know they work.  I've used them ;)

>So, what's the real story here?  I didn't notice this mentioned in the FAQ,
>so maybe I'm the first to be confused by this.

I hadn't noticed it myself.

Robert

" 'Freedom' has no meaning of itself.  There are always restrictions,
be they legal, genetic, or physical.  If you don't believe me, try to
chew a radio signal. "

                         Kelvin Throop, III