MEMORY DEVICES HAVING SPECIAL MODE ACCESS

摘要

Memory devices are provided that include special operating modes accessible upon receipt of a particular message from a host. One device includes a memory array, a special mode enable register, and a controller. When the controller receives a register write command to write first data into the special mode enable register and the memory device does so, the memory device operates in a first mode. When the controller receives a register write command to write second data into the special mode enable register and the memory device does so, the memory device operates in a second mode.

主权项

1. A NAND flash memory device comprising:
a controller; a memory buffer; and a NAND memory array comprising a one time programmable (OTP) block comprising a plurality of OTP pages, wherein each of the plurality of OTP pages is associated with a flash lock enable bit configured to disallow writing to each of the plurality of OTP pages when the flash lock enable bit is set.