Atmel 49F010/020/040 Operation Notes

These chips all have a boot block with lockout feature. This feature works in a OTP(one-time-program) way, which means once it had been activated, it can't be unlocked again. To prevent from accidentally enabled, the user must set the Protect-Setting-Byte(PSB) to value 5A(HEX) to let the programmer enable this lockout feature automatically in the COPY command. (Since version 1.16)

The VERIFY command will compare the content of all salves with the master device first, and then compare their lockout status with the PSB setting. Only those which has both comparison passed will be recognized as a good one.(Since version 1.16)

TO HOME PAGE