Memory Technology Comparison

1. Memory Technology Comparison

3. Silicon on insulator technology (SOI) refers to the use of a layered silicon-insulator-silicon substrate in place of conventional silicon substrates in semiconductor manufacturing System-on-a-chip or system on chip (SoC or SOC) refers to integrating all components of a computer or other electronicsystem into a single integrated circuit (chip).

4. Silicon on insulator • Developed by IBM • Speed 30% faster than complementary metal-oxide semiconductor (CMOS)- • Power consumption is reduced to 80% • Reduce the soft error rate • SOI microchip operate faster and cooler than CMOS. • SIMOX (Separation by IMplantation of Oxygen) • Currently, SOI chips are used in IBM's AS/400 iSeries servers

5. Z-RAM Zero - RAM Or Zero Capacitor – RAM (SHRINK EMBEDDED MEMORY)

6. Device Overview • Compatible with standard SOI logic or memory process • Single Transistor bitcell • No capacitor • Small Cell Size • As scalable as CMOS • No new materials • Work for N and PMOS devices

7. Architecture • ZRAM is a library of parallel search algorithms and the corresponding data structures. The implementation is application-independent and machine-independent. The interface is user-friendly and lets non-specialists use the power of parallel computers

9. Host System At the bottom of ZRAM lies a thin host-system layer. It serves as a central place for gathering most of the machine-dependent code to ensure the portability of the other three layers. It provides the basic message-passing and time-measurement primitives in a machine-independent form. The message-passing operations are organized in two groups: • Front end Communication • Horizontal Communication

10. Message Passing Interface (MPI-) • Makes portable • Machine independent • Modeled on subset of standard message passing • Send & Receive primitives of MPI- • Do parallel processing

11. Service Modules • Virtual Front end Processor • Termination detection • Dynamic Load Balancing • Check Pointing

12. Virtual Machine • It is the front hand • It has service modules that enhance MPI-

13. Search Engine • Branch & Bound • Reverse Search • Backtracking • Tree Size Estimation

14. Applications Interface • It directly run the Applications • Separate the problem specific and problem independent part of Applications • Than continue it to the lower layers

15. Benefits Over Traditional SRAM & DRAM • Smaller product size • Cost savings • Manufacturing Savings • Minimal Standby Power • SOI Process • Lithography Friendly

16. Conclusion While memory technologies like SRAM and DRAM have long dominated the electronics industry, the migration to ever smaller process geometries is driving the need for an alternate solution. That solution, both today and for the future, might well be Z-RAM memory technology. Its low cost and high performance enables it to act as a direct SRAM replacement in certain applications such as high density cache memories for microprocessors, game processors, and high-performance SOCs in general. Of course, Z-RAM is a high performance volatile memory, so it is not appropriate for applications where permanent storage is required. Even more important, thanks to its scalability, ZRAM is the only memory technology to date that is well positioned for use both as embedded and stand-alone memory in applications where DRAM has reached its scaling limit

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