Hi, i have a question about an access restriction of writing to on-chip flash after setting the security bit. Can i program the flash through an EFC after setting the security bit?
A JTAG interface that is allowed to download program code to RAM, can download a little application that reads out all flash contents.
In case of the AT91SAM7S, the security bit blocks all external accesses to flash (read + write) except for a full chip erase (which will also reset the security bit after the erase operation finishes).