Drain Poly 2 Split Gate Poly 1 SuperFlash® Technology Poly 2 Poly 1 Source Stacked Gate Drain (Conventional Flash) Memory Products 9 NOR Flash What Is SuperFlash Technology? Microchip’s SuperFlash technology is an innovative, highly reliable and versatile type of NOR Flash memory. SuperFlash technology memory is much more flexible and reliable than competing non-volatile memories. This technology utilizes a split-gate cell architecture which uses a robust thick-oxide process that requires fewer mask steps resulting in a lower-cost nonvolatile memory solution with extremely fast erase time, excellent data retention and higher reliability. SuperFlash Technology Advantages ■ Fast, fixed program and erase times • ~ 40 ms for SuperFlash technology vs. more than a minute for conventional 64 Mb • Results in improved manufacturing efficiency and lower costs ■ No pre-programming or verification required prior to erase • Results in significantly lower power consumption ■ Superior reliability • 100 K cycles and 100 years data retention ■ Inherent small-sector size • 4 KB erase sector vs. 64 KB • Results in faster re-write operations and contributes to lowering overall power consumption Flash Performance Comparison Microchip 26 Series SQI™ (80 MHz) Parallel ×16 (70 ns) Parallel ×16 (70 ns) Serial SPI (66 MHz) 0 100 200 300 400 Sustained Data Transfer Rate (Mbit/sec) Memory Cell Structure Comparison Source Thicker tunnel oxide reduces leakage improving data retention and reliability. 100× Times Faster Erase Times Than Competitors and Chip Erase Time Remains the Same Across All Densities 0.5 1 2 4 8 16 32 64 100 100 10 1 0.1 0.01 Density (Mb) Microchip Competitor 1 Competitor 2 Competitor 3 Competitor 4 Serial and Parallel Flash Serial Flash (25 and 26 Series) are designed for a wide variety of applications in consumer electronics, computing, networking and industrial spaces. Small form factor, standard pinouts and command sets make Serial Flash easy to design in and cost competitive. Our Parallel Flash (39 and 38 Series) are ideal for GPS/navigation and other mobile devices that require execute-in-place (XIP) performance and for demanding industrial and automotive applications. 8 Mb and 16 Mb Firmware Flash Microchip is the sole remaining supplier of 8 Mb and 16 Mb Firmware Flash. These SuperFlash technology memory devices are compliant with the Intel Low Pin Count (LPC) Interface Specification and are intended to store system BIOS in applications such as PCs, point-ofsale systems, set-top boxes, network boards and other embedded CPU applications. ■ FWH devices (49LF008A and 49LF016C) incorporate Intel’s proprietary FWH interface protocol used in the Intel 8XX Series Hub Architecture chipsets. ■ LPC Flash devices (49LF080A and 49LF160C) comply with the standard Intel Low Pin Count Interface Specification 1.1.
EETE MAR 2015
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