Protection of code

[manbir]

I'm using the 89LPC935FA device for a project.
How can I protect my code so it can not be copied by 3rd party.
I still would like to re use the same device for update of code if required.
I'm using the Flash magic software to program the device.

[Andy Ayre]

Read the section in the datasheet on the security bits. There are three bits for each block and you can select the protection you want.