2 ms·
Years back I used to work for a company that built 8051 clones. It was possible to prevent the microprocessor from reading the flash memory because the 8051 has
by pkaye 8y ago
Years back I used to work for a company that built 8051 clones. It was possible to prevent the microprocessor from reading the flash memory because the 8051 has a separate program memory and data memory space.
- vardump 8y agoI don't understand how that helps to prevent reading anything. 8051 can read data from both CODE and XDATA memory spaces. See: http://www.keil.com/support/man/docs/is51/is51_movc.htm http://www.keil.com/support/man/docs/is51/is51_movc.htm
- pkaye 8y agoForgot to mention those two instruction will be disabled in flash protected mode.