Multiple partitioned emulated electrically erasable (EEE) memory and method of operation
View Patent ↗A method and system wherein a volatile memory is partitioned to have a first percentage of address space dedicated to a first classification of data which is data that is expected to have greater than a predetermined number of times of being modified and a second percentage of address space dedicated to a second classification of data which is data that is expected to have less than the predetermined probability of being modified. Address assignment of data to be stored in the volatile memory is made on a basis of predicted change of the data. Memory addresses of the first and second percentages of address space are respectively assigned to first and second sections of nonvolatile memory. The memory addresses of the first percentage initially consume a smaller percentage of an address map of the first section than the memory addresses of the second percentage of the second section.
1. A method comprising:
partitioning a volatile memory to have a first percentage of address space within the volatile memory dedicated to high dynamic data which is data that is expected to have greater than a predetermined number of times of being modified and a second percentage of address space within the volatile memory which is dedicated to low dynamic data which is data that is expected to have less than the predetermined number of times of being modified, thereby allocating address assignment of data to be stored in the volatile memory on a basis of predicted change of the data;
assigning memory addresses of the first percentage of address space to a first portion of nonvolatile memory; and
assigning memory addresses of the second percentage of address space to a second portion of nonvolatile memory, the memory addresses of the first percentage of address space initially consuming a smaller percentage of an address map of the first portion of nonvolatile memory than the memory addresses of the second percentage of address consumes in an address map of the second portion of nonvolatile memory.
2. The method of claim 1 further comprising:
receiving a signal at an input of a data processor as a software instruction that is input for execution by the data processor and performing the partitioning in response thereto.
3. The method of claim 1 further comprising:
receiving a signal as a command that invokes use of stored information in a memory controller and performing the partitioning in response thereto.
4. The method of claim 1 further comprising:
coupling a memory controller between a processor, volatile memory, and the first and second portions of nonvolatile memory; and
separately performing a number of memory program and erase operations that is within twenty percent of each other on the first portion of the nonvolatile memory and the second portion of the nonvolatile memory over a predetermined period of time.
5. The method of claim 1 further comprising:
implementing the first portion of nonvolatile memory and the second portion of nonvolatile memory as substantially same sized memories.
6. The method of claim 1 further comprising:
dedicating at least seventy percent of storage of the volatile memory to low dynamic data.
7. The method of claim 1 further comprising:
partitioning the volatile memory to have additional assigned address space for segregating data stored in the volatile memory to regions additional to the regions dedicated to high dynamic data and low dynamic data.
8. The method of claim 1 further comprising:
storing high dynamic data from the volatile memory in a redundant form in the first portion of nonvolatile memory; and
storing low dynamic data from the volatile memory in a redundant form in the second portion of nonvolatile memory.
9. A memory system comprising:
a processor comprising an input for receiving a signal and decoding the signal;
a volatile memory coupled to the processor via a system interconnect, the volatile memory being partitioned to have a first percentage of address space within the volatile memory dedicated to high dynamic data which is data that is expected to have greater than a predetermined number of times of being modified and a second percentage of address space within the volatile memory dedicated to low dynamic data which is data that is expected to have less than a predetermined probability of being modified, thereby allocating address assignment of data to be stored in the volatile memory on a basis of predicted change of the data;
a memory controller coupled to the volatile memory and the processor;
a first nonvolatile memory portion coupled to the memory controller, memory addresses of the first percentage of address space being assigned to the first nonvolatile memory portion; and
a second nonvolatile memory portion coupled to the memory controller, memory addresses of the second percentage of address space being assigned to the second nonvolatile memory portion, the memory addresses of the first percentage of address space initially consuming a smaller percentage of an address map of the first nonvolatile memory portion than the memory addresses of the second percentage of address consumes in an address map of the second nonvolatile memory portion.
10. The memory system of claim 9 wherein the signal is received as a software instruction that is input for execution by the processor and partitioning is performed in response thereto.
11. The memory system of claim 9 wherein the signal is received as a command that invokes use of stored information in the memory controller and partitioning is performed in response thereto.
12. The memory system of claim 9 wherein within twenty percent of a same number of memory program and erase operations are performed on the first nonvolatile memory portion and the second nonvolatile memory portion over a predetermined period of time.
13. The memory system of claim 9 wherein the first nonvolatile memory portion and the second nonvolatile memory portion are substantially same sized memories.
14. The memory system of claim 9 wherein at least seventy percent of storage of the volatile memory is dedicated to low dynamic data.
15. The memory system of claim 9 wherein the volatile memory is partitioned to have additional assigned address space for segregating data stored in the volatile memory to regions additional to the regions dedicated to high dynamic data and low dynamic data.
16. The memory system of claim 9 wherein high dynamic data from the volatile memory is stored in a redundant form in the first nonvolatile memory portion and low dynamic data from the volatile memory is stored in a redundant form in the second nonvolatile memory portion.
17. A method comprising:
partitioning a volatile memory to have a first percentage of address space within the volatile memory dedicated to a first classification of data which is data that is expected to have greater than a predetermined number of times of being modified and a second percentage of address space within the volatile memory dedicated to a second classification of data which is data that is expected to have less than the predetermined probability of being modified, thereby allocating address assignment of data to be stored in the volatile memory on a basis of predicted change of the data;
assigning memory addresses of the first percentage of address space to a first section of a nonvolatile memory having a first predetermined number of sectors; and
assigning memory addresses of the second percentage of address space to a second section of the nonvolatile memory having a second predetermined number of sectors, the memory addresses of the first percentage of address space initially consuming a smaller percentage of an address map of the first section of nonvolatile memory than the memory addresses of the second percentage of address consumes in an address map of the second section of the nonvolatile memory.
18. The method of claim 17 further comprising:
implementing within twenty percent of a same number of sectors in the first section of nonvolatile memory as the second section of nonvolatile memory.
19. The method of claim 17 further comprising:
storing the first classification of data from the volatile memory in a redundant form in the first section of the nonvolatile memory; and
storing the second classification of data from the volatile memory in a redundant form in the second section of the nonvolatile memory.
20. The method of claim 17 further comprising:
receiving a signal that is used to determine at least one of the first percentage and the second percentage.