Lpc2000

> Code read protection is enabled by programming the flash address
> location 0x1FC (User flash sector 0) with value 0x87654321. If Read
> Protection is enabled then the device has to be fully erased (thus
> disabling Read Protection) before it can be re-programmed.

When performing a full chip erase, the location 0x1FC is erased so 
the read protection is no longer enabled. There is a boot loader in 
the device that will not be erased, so new firmware can be uploaded 
to the device. The boot loader is invoked by pulling P0.14 low. Also, 
IAP is not disabled when read protection is.

Jim

--- In lpc2000@yahoogroups.com, "Hugh O'Keeffe" <hugh.okeeffe@a...> 
wrote:
> -----Original Message-----
> From: James Dabbs [mailto:jdabbs@t...] 
> Sent: 21 February 2004 13:54
> To: lpc2000@yahoogroups.com
> Subject: Re: [lpc2000] Re: Code Protection
> 
> 
> 
> > > AFAIK, when read protection is enabled all JTAG access (to 
flash) is
> > > blocked as well as Read/Write/Copy/Go "bootloader" commands.
> > > Hugh @ http://www.ashling.com/support/lpc2100/
> 
> Once a part is code protected, can it be erased and reprogrammed? 
>  
>  
> 
> Yes. Hugh @ http://www.ashling.com/support/lpc2100/ 
>  
> 
> 
> 
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