MANAGING ERRORS IN A DRAM BY WEAK CELL ENCODING

摘要

This disclosure includes a method for preventing errors in a DRAM (dynamic random access memory) due to weak cells that includes determining the location of a weak cell in a DRAM row, receiving data to write to the DRAM, and encoding the data into a bit vector to be written to memory. For each weak cell location, the corresponding bit from the bit vector is equal to the reliable logic state of the weak cell and the bit vector is longer than the data.

主权项

1. A method for managing errors in a DRAM (dynamic random access memory) due to weak cells, comprising:
determining the location of a weak cell in a DRAM row that can only hold one reliable logic state during a refresh interval; receiving data, by a memory controller, to write to the DRAM; and encoding the data into a bit vector to be written to memory, wherein:
for each weak cell location, the corresponding bit from the bit vector is equal to the reliable logic state of the weak cell; andthe bit vector is longer than the data.