Vierra Magen Marcus LLP
Programmable processor in an integrated memory assembly
A programmable and reprogrammable processor on a control semiconductor die is disclosed. The processor controls various operations on a memory semiconductor die to which it is bonded, such as read, write, and erase. The processor issues control signals to operate circuits such as voltage regulators, sense amplifiers, and data latches. Because the processor is reprogrammable, it is possible to modify the operation of the circuits. For example, the processor can execute updated instructions to control the voltage regulators to modify the timing and/or magnitude of voltages applied to control lines in the memory semiconductor die. In one aspect, a page mapping scheme is updated in order to more evenly distribute a bit error rate (BER) across the pages. In one aspect, a read equalization scheme is updated. In one aspect, a technique for reading soft bits is updated.
Western Digital Technologies, Inc.
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Alexander Eran Idan
Bazarsky Sharon Alrod