SRAM Memory Chips & Microchips | RS
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    SRAM

    SRAM stands for Static Random Access Memory and is a type of semiconductor memory that uses bistable latching circuitry (flip-flop) to store each bit. It holds data bits in its memory so long as power is being supplied. It cannot hold data if power is removed. SRAM is used where speed or low power are needed. It’s higher density than DRAM, and less complicated structure makes it ideal to use in semiconductor memory scenarios where high capacity memory is used as seen in the working memory within computers.

    SRAM is different to DRAM (dynamic RAM, which stores bits in cells consisting of a capacitor and a transistor), due to the fact that SRAM does not have to be refreshed unlike Dynamic which will lose data unless refreshed periodically. Also SRAM is faster and more expensive than DRAM.

    SRAM is used for a computer’s cache memory as well as being part of the RAM digital to analogue converter found on a video card. SRAM can be designed with a general CMOS technology process with six transistors (6T memory cell) and no capacitors. Since transistors do not require power to prevent leakage, SRAM does not have to be refreshed on a regular basis:

    Features

    • Data is held statically – data is held in the semiconductor memory, no need to refresh data after every read data operation as long as the power is applied to the memory
    • Three operational states which are hold, write and read
    • Bistable (cross-coupled) INVs for storage
    • Access transistors MAL and MAR – access to stored data for read and write
    • Word line, WL, controls access – WL=0 (hold operation), WL=1 (read/write operation)
    • Long data lifetime

    Applications

    • Computers
    • Workstations
    • Routers
    • LCD screens and printers
    • Electronics
    • Microprocessors

    479 產品顯示為 SRAM

    Infineon
    -
    128Mbit
    -
    -
    16bit
    35ns
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Renesas Electronics
    -
    16kB
    2K x 8
    -
    -
    25ns
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Alliance Memory
    Low Power
    4Mbit
    512K x 8
    524288
    8bit
    55ns
    -
    -
    Asynchronous
    Surface Mount
    SOP-32
    32
    20.75 x 11.3 x 2.9mm
    2.9mm
    5.5 V
    Alliance Memory
    Low Power
    64kbit
    8K words x 8 bit
    8k
    8bit
    55ns
    13bit
    -
    Asynchronous
    Through Hole
    PDIP
    28
    36.32 x 13.21 x 3.81mm
    3.81mm
    5.5 V
    Infineon
    -
    4Mbit
    512 K x 8
    512k
    8bit
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Alliance Memory
    Low Power
    4Mbit
    256K x 16
    262144
    16bit
    55ns
    -
    -
    Asynchronous
    Surface Mount
    TSOP-44
    44
    18.52 x 10.26 x 1.05mm
    1.05mm
    3.6 V
    Renesas Electronics
    -
    2Mbit
    1M X 16
    1M
    16bit
    55ns
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Alliance Memory
    Low Power
    4Mbit
    512K x 8 bit
    512k
    8bit
    55ns
    19bit
    -
    Asynchronous
    Through Hole
    PDIP
    32
    41.91 x 13.818 x 3.81mm
    3.81mm
    5.5 V
    STMicroelectronics
    Low Power
    16kbit
    2k x 8 bit
    2K
    9bit
    150ns
    -
    -
    -
    Through Hole
    PCDIP
    24
    34.8 x 18.34 x 9.89mm
    8.89mm
    5.5 V
    Alliance Memory
    Low Power
    64kbit
    8k x 8 bit
    8k
    8bit
    55ns
    13bit
    -
    Asynchronous
    Surface Mount
    SOP
    28
    18.49 x 8.64 x 2.49mm
    2.49mm
    5.5 V
    Renesas Electronics
    Low Power
    32kbit
    2K x 8
    4K
    16bit
    55ns
    -
    -
    Asynchronous
    Surface Mount
    PLCC-52
    52
    19 x 19 x 3.63mm
    3.63mm
    5.5 V
    Alliance Memory
    Low Power
    4Mbit
    512K x 8
    524288
    8bit
    55ns
    -
    -
    Asynchronous
    Through Hole
    PDIP-32
    32
    41.91 x 13.818 x 3.81mm
    3.81mm
    5.5 V
    Renesas Electronics
    Low Power
    4Mbit
    256K x 16
    256K
    16bit
    10ns
    -
    -
    Asynchronous
    Surface Mount
    TSOP-44
    44
    18.41 x 10.16 x 1mm
    1mm
    3.6 V
    ISSI
    Low Power
    16Mbit
    1M x 16 bit
    1M
    16bit
    10ns
    20bit
    -
    Asynchronous
    Surface Mount
    TSOP
    48
    18.6 x 12.2 x 1.05mm
    1.05mm
    3.6 V
    Infineon
    -
    4Mbit
    512K x 8
    512k
    8bit
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Microchip
    Low Power
    512kbit
    64k x 8 bit
    64k
    8bit
    5ns
    16bit
    20MHz
    Synchronous
    Surface Mount
    SOIC
    8
    4.9 x 3.9 x 1.25mm
    1.25mm
    5.5 V
    Microchip
    Low Power
    512kbit
    64k x 8 bit
    64k
    8bit
    5ns
    16bit
    20MHz
    Synchronous
    Surface Mount
    SOIC
    8
    4.9 x 3.9 x 1.25mm
    1.25mm
    5.5 V
    Alliance Memory
    Low Power
    256kbit
    32K words x 8 bit
    32k
    8bit
    55ns
    15bit
    -
    Asynchronous
    Through Hole
    PDIP
    28
    36.32 x 13.21 x 3.81mm
    3.81mm
    5.5 V
    Infineon
    Low Power
    512kbit
    32k x 16
    32k
    16bit
    10ns
    16bit
    1MHz
    Asynchronous
    Surface Mount
    TSOP-44
    44
    18.51 x 10.26 x 1.05mm
    1.05mm
    3.6 V
    Renesas Electronics
    Low Power
    256kbit
    16K x 16
    16K
    16bit
    25ns
    32bit
    -
    Asynchronous
    Surface Mount
    TQFP-100
    100
    14 x 14 x 1.4mm
    1.4mm
    3.6 V
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