Patent ID: 11881275
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 11:
12. A non-transitory medium storing a test program that, when executed by a processor of a system causes the system to perform operations to screen memory cells in a memory array, the operations comprising:
executing read and write operations according to read and write instructions, each read instruction including an address from which data is to be read and a wordline modulation value specifying a wordline modulation voltage to be applied to a wordline of a target memory cell during a read operation, the wordline modulation voltage being different than a nominal wordline voltage of the memory cell, and each write instruction including an indication of data to be written, an address to which data is to be written, and a bitline modulation voltage to be applied to a bitline of a target memory cell during a write operation, the bitline modulation voltage being different than a nominal bitline voltage of the memory cell;
generating a sequence of addresses to be read from, or written to, based on the addresses in the read and write instructions and to generate test data to be written based on the write instructions;
generating signals that cause the memory array to carry out read and write instructions, as specified by the test program, including use of the modulated wordline voltage and use of the modulated bitline voltages; and
comparing, for each read instruction executed, the read data responsive to that read instruction with an expected result.