Flexible OTP sector protection architecture for flash memories

A method for protecting a memory from modification comprising:

• determining a size of each of a plurality of blocks of the memory, the plurality of blocks corresponding to a plurality of one time programmable (OTP) cells, at least one OTP cell of the plurality of OTP cells corresponding to a block of the plurality of blocks, the at least one OTP cell preventing programming of the block when the at least one OTP cell is in a first state, the at least one OTP cell allowing programming of the block when the at least one OTP cell is in a second state;
• and
• writing the at least one OTP cell to the first state.

A method for protecting a memory from modification comprising:

• providing a plurality of one time programmable (OTP) OTP cells corresponding to a plurality of blocks of the memory, an OTP cell of the plurality of OTP cells corresponding to a block of the plurality of blocks, the OTP cell allowing modification of the block when the OTP cell is in a first state and permanently preventing modification of the block when the OTP cell is in a second state;
• and
• providing OTP cell logic coupled with the plurality of OTP cells for determining a size of the block corresponding to the OTP cell.