Leakage detection in flash memory cell

A method comprising:

• reading a flash cell in a flash memory device to generate a read signal;
• comparing the read signal with a low signal;
• comparing the read signal with a high signal;
• and
• initiating an operation on the flash cell if the read signal is between the low signal and the high signal.

A method comprising:

• sensing a read current in a flash cell in a flash memory device;
• comparing the read current with a high reference current;
• comparing the read current with a low reference current;
• identifying data stored in the flash cell based on the comparisons;
• and
• initiating an operation on the flash cell if the read current is between the low reference current and the high reference current.

A method comprising:

• reading a flash cell in a flash memory device to generate a read signal;
• comparing the read signal with a low signal;
• comparing the read signal with a high signal;
• identifying data stored in the flash cell based on the comparisons;
• and
• initiating an operation on the flash cell if the read signal is between the low signal and the high signal.

A method of operating a system comprising:

• exchanging signals between a memory controller and a flash memory device;
• sensing a read current in a flash cell in the flash memory device;
• comparing the read current with a high reference current;
• comparing the read current with a low reference current;
• and
• initiating an operation on the flash cell if the read current is between the low reference current and the high reference current.

A method of operating a system comprising:

• exchanging signals between a memory controller and a flash memory device;
• reading a flash cell in the flash memory device to generate a read signal;
• comparing the read signal with a low signal;
• comparing the read signal with a high signal;
• and
• initiating an operation on the flash cell if the read signal is between the low signal and the high signal.

A method of operating a system comprising:

• exchanging signals between a memory controller and a flash memory device;
• sensing a read current in a flash cell in the flash memory device;
• comparing the read current with a high reference current;
• comparing the read current with a low reference current;
• identifying data stored in the flash cell based on the comparisons;
• and
• initiating an operation on the flash cell if the read current is between the low reference current and the high reference current.

A method of operating a system comprising:

• exchanging signals between a memory controller and a flash memory device;
• reading a flash cell in the flash memory device to generate a read signal;
• comparing the read signal with a low signal;
• comparing the read signal with a high signal;
• identifying data stored in the flash cell based on the comparisons;
• and
• initiating an operation on the flash cell if the read signal is between the low signal and the high signal.

A method of operating a system comprising:

• exchanging signals between a memory controller and a flash memory device;
• reading a flash cell in a read cycle in the flash memory device to generate a read signal;
• comparing the read signal with a first reference signal in the read cycle to indicate data stored in the flash cell;
• and
• comparing the read signal with a second reference signal in the read cycle to indicate if the flash cell is leaky.

A method of operating a system comprising:

• exchanging signals between a memory controller and a flash memory device;
• reading a flash cell in a read cycle in the flash memory device to generate a read signal;
• generating a plurality of reference signals;
• comparing the read signal with each of the reference signals in the read cycle;
• generating a data signal based on the comparison to indicate data stored in the flash cell;
• and
• generating a refresh signal based on the comparison to request a refresh of the flash cell if the flash cell is leaky.

A method of operating a system comprising:

• exchanging signals between a memory controller and a flash memory device;
• reading a flash cell in a read cycle in the flash memory device to generate a read signal;
• comparing the read signal with a first reference signal in a first sense amplifier to indicate data stored in the flash cell;
• comparing the read signal with a second reference signal in a second sense amplifier to indicate if the flash cell is leaky;
• and
• generating a refresh signal requesting a refresh operation for the flash cell if the flash cell is indicated as leaky.